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The Black Mountain (Y Mynydd Du) from Glyntawe Walk

A spectacular ridge walk to Fan Brycheiniog, Fan Foel and Waun Lefrith. Return via a glacial valley below the ridge, or remote moorland, shakeholes and a waterfall

Brecon Beacons Tough

Hiking weather forecast

Brecon Beacons hourly weather (Visual Crossing)

Sunset: 21:25. Dusk: 22:10. Dark: 23:15. Moon 62% (23:40 to dawn)

Updated: Wed, 16-Jul at 20:39

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 42%
Thu, 17 Jul 16% 16% 🌫 26% 🌫 26% 🌫 26% 🌫 26% 26% 26% 16% 16% 16% 16% 16% 16% 0% 0%
Fri, 18 Jul 0% 0% 13% 13% 13% 13% 13% 13% 13% 13% 13% 13% 13% 13% 23% 23%
Sat, 19 Jul 10% 10% 16% 16% 16% 16% 16% 16% 61% 61% 61% 61% 61% 61% 77% 77%
Sun, 20 Jul 52% 52% 58% 58% 58% 58% 58% 58% 87% 87% 87% 87% 87% 87% 58% 58%
Mon, 21 Jul 🌫 23% 23% 55% 55% 55% 55% 55% 55% 48% 48% 48% 48% 48% 48% 39% 39%
Tue, 22 Jul 32% 32% 36% 36% 36% 36% 36% 36% 48% 48% 48% 48% 48% 48% 26% 26%
Wed, 23 Jul 19% 19% 26% 26% 26% 26% 26% 26% 36% 36% 36% 36% 36% 36% 19% 19%
Thu, 24 Jul 10% 10% 16% 16% 16% 16% 16% 16% 19% 19% 19% 19% 19% 19% 16% 16%
Fri, 25 Jul 26% 26% 39% 39% 39% 39% 39% 39% 32% 32% 32% 32% 32% 32% 16% 16%
Sat, 26 Jul 23% 23% 29% 29% 29% 29% 29% 29% 32% 32% 32% 32% 32% 32% 13% 13%
Sun, 27 Jul 19% 19% 26% 26% 26% 26% 26% 26% 26% 26% 26% 26% 26% 26% 13% 13%
Mon, 28 Jul 10% 10% 23% 23% 23% 23% 23% 23% 19% 19% 19% 19% 19% 19% 26% 26%
Tue, 29 Jul 16% 16% 32% 32% 32% 32% 32% 32% 26% 26% 26% 26% 26% 26% 26% 26%
Wed, 30 Jul 16% 16% 39% 39% 39% 39% 39% 39% 39% 39% 39% 39% 39% 39% 23% 23%

Percentages are the chance of rain.

Weather data by Visual Crossing

Brecon Beacons hourly weather (Open Meteo)

Sunset: 21:25. Dusk: 22:10. Dark: 23:15. Moon 62% (23:40 to dawn)

Updated: Wed, 16-Jul at 20:37

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 15% 12%
Thu, 17 Jul 62% 59% 61% 66% 73% 82% 93% 100% 100% 100% 96% 81% 60% 41% 26% 14%
Fri, 18 Jul 78% 75% 66% 53% 45% 48% 56% 63% 66% 67% 67% 68% 69% 65% 53% 37%
Sat, 19 Jul 7% 8% 9% 12% 18% 31% 48% 61% 66% 68% 67% 64% 58% 53% 49% 45%
Sun, 20 Jul 63% 63% 66% 71% 76% 79% 82% 84% 87% 91% 92% 92% 90% 84% 73% 58%
Mon, 21 Jul 18% 18% 24% 35% 47% 63% 81% 94% 98% 97% 92% 81% 65% 51% 41% 33%
Tue, 22 Jul 64% 65% 66% 68% 70% 75% 81% 86% 87% 87% 86% 84% 81% 78% 73% 68%
Wed, 23 Jul 41% 43% 47% 53% 58% 63% 68% 71% 71% 69% 66% 63% 58% 53% 46% 38%
Thu, 24 Jul 27% 31% 35% 38% 41% 44% 47% 49% 51% 52% 52% 52% 51% 49% 44% 37%
Fri, 25 Jul 22% 24% 25% 26% 26% 26% 27% 27% 27% 27% 27% 27% 26% 25% 22% 19%
Sat, 26 Jul 15% 18% 21% 24% 26% 28% 30% 31% 31% 30% 29% 28% 26% 24% 22% 19%
Sun, 27 Jul 19% 22% 25% 29% 32% 35% 37% 39% 39% 39% 38% 37% 35% 33% 30% 27%
Mon, 28 Jul 21% 24% 28% 33% 38% 43% 47% 49% 48% 46% 43% 39% 35% 31% 27% 24%
Tue, 29 Jul 14% 16% 18% 21% 24% 27% 29% 31% 32% 33% 34% 34% 34% 33% 30% 26%
Wed, 30 Jul 22% 25% 28% 31% 34% 37% 39% 41% 42% 42% 41% 40% 39% 37% 34% 31%
Thu, 31 Jul 16% 19% 20% 21% 21% 21% 22% 23% 25% 28% 30% 32% 34% 35% 35% 34%

Percentages are the chance of rain.

Weather data by Open-Meteo

Brecon Beacons hourly weather (Met Office)

Sunset: 21:25. Dusk: 22:10. Dark: 23:15. Moon 62% (23:40 to dawn)

Updated: Wed, 16-Jul at 20:00

06 09 12 15 18 21
Today 51%
Thu, 17 Jul 🌫 22% 🌫 20% 🌫 19% 7% 7% 5%
Fri, 18 Jul 26% 10% 5% 6% 8% 6%
Sat, 19 Jul 19% 37% 43% 38% 19% 15%
Sun, 20 Jul 60% 23% 42% 43% 38% 31%
Mon, 21 Jul 10% 36% 39% 39% 34% 14%
Tue, 22 Jul 19% 49% 49% 37% 38% 12%
Wed, 23 Jul 12% 8% 14% 11% 8%

Percentages are the chance of rain.

Weather data by Met Office

Regional weather (Met Office)

Sunset: 21:25. Dusk: 22:10. Dark: 23:15. Moon 62% (23:40 to dawn)

Updated: Wed, 16-Jul at 20:38

Wales

Often cloudy with showers but feeling humid.

  • Cloud in the southwest spreading to all areas overnight, accompanied by spells of rain and drizzle, prolonged over higher ground
  • Misty and murky around coasts and hills
  • A mild, muggy night, rather uncomfortable for sleeping in places
  • Minimum Temperature 14C

Thursday:

  • Cloudy start with patchy rain and drizzle across the hills
  • Brighter spells breaking through during the afternoon as coastal and hill fog lifts, though ongoing chance of a shower
  • Humid
  • Maximum Temperature 25C

Outlook for Friday to Sunday:

  • Early rain on Friday clearing to warm sunny spells
  • More widely unsettled over the weekend
  • Showers may be heavy or blustery at times, carrying the risk of thunder and hail

UK Day 6-7 and week 2

  • Overall a rather more changeable pattern of weather through this period, compared to much of the summer thus far
  • The first couple of days will likely be dominated by low pressure leading to particularly unsettled weather, with heavy rain and/or thunderstorms in some areas
  • Thereafter, a general westerly regime looks to become established, with occasional weather systems moving in from the Atlantic
  • This means further rain or showers and breezy conditions at times, especially in the northwest
  • This will be interspersed with some drier, sunnier periods
  • Temperatures are expected to average out above normal and whilst brief hotter and humid days are possible
  • This broad pattern is likely to continue through to the end of July

UK Week 3 and 4

  • The rather changeable pattern will likely continue through early August with spells of rain or showers mixed in with some drier, brighter days
  • Towards mid-August, there are tentative signs that high pressure may become rather more dominant, which could bring more in the way dry, settled weather more widely
  • Temperatures will likely continue to be above average overall, with the possibility of very warm or hot spells developing later in the period, especially further south and east

Weather data by Met Office

Brecon Beacons mountain weather forecast (Met Office)

Sunset: 21:25. Dusk: 22:10. Dark: 23:15. Moon 62% (23:40 to dawn)

Updated: Wed, 16-Jul at 17:04

Specialist mountain forecast: MWIS

Evening
Wed, 16-Jul

Likely remaining dry but becoming increasingly dull through the evening as cloud builds from the south and west. Winds remaining generally light and highly variable in direction.

Tomorow
Thu, 17-Jul

Early cloud and rain clearing to give a drier and brighter afternoon.

Cloud thickens to give a dull overcast night with outbreaks of rain, these may perhaps turn heavy at times during the early hours. Widespread low cloud and spells of light rain and drizzle persisting into the morning but cloud will eventually lift and break into the afternoon, with some brightness and conditions becoming generally dry by the evening. Fresh southerly winds will take the edge off the temperatures but feeling humid.

Low risk Heavy Persistent Rain
Medium risk Strong Sunlight
High risk Poor Visibility
Chance of Cloud free tops 20% early, gradually becoming 80% by the end of the day.
Ground conditions Please see - https://yrwyddfa.live/
Visibility Widespread cloud, with bases down to 200-300m to start the day, cloud gradually lifting to 600-800m into the afternoon then gradually becoming 900-1000m to end the day. Visibility generally good outside rain or cloud, where it will be moderate to poor.
Confidence High
View Some poor conditions at height initially but a better afternoon with the threat of some moderate UV levels. Sheltered northern and eastern areas generally the soonest to lift and break the cloud.

Conditions on the tops at 900m

Time Weather Rain Temp Wind Freezing
00:00 Light rain 80% 12 18 3400m
03:00 Heavy Rain 80% 12 23 3600m
06:00 Light rain 90% 13 22 3300m
09:00 Light rain 90% 13 22 3100m
12:00 Light rain 30% 13 20 3100m
15:00 Cloudy 20% 13 20 3000m
18:00 Sunny intervals 10% 12 21 2900m
21:00 Cloudy 20% 12 23 3000m
Fri, 18-Jul

Another cloudy start with some outbreaks of rain. Sunny spells developing into the afternoon. Isolated showers possible.

Ice Above summits.
Visibility Occasional low cloud, with bases down to 300-400m to start the day, cloud lifting to 600-breaking into the afternoon likely above summits. Visibility generally good outside early rain or cloud, where it will be moderate to poor.
Wind SSW 20-25mph gusting 30mph.
Temp (tops) Plus 10 Celsius becoming Plus 13 Celsius. at 800m
Sat, 19-Jul

Warm on Saturday. Sunny spells to start, followed by increasing cloud amounts and possible showers through the middle of the day. A risk of thunderstorms. Light winds becoming moderate easterlies.

Sun, 20-Jul

Unsettled Spells of rain and embedded, potentially thundery showers likely overnight and into Sunday. Moderate southerly winds.

Mon, 21-Jul

Another warm day, likely drier but with the continued risk of some heavy and perhaps thundery showers. Light winds.

Weather data by Met Office

Brecon Beacons Air Quality (Pollen and UV)

Updated: Wed, 16-Jul at 20:37

Key : Low Medium High Very High

00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Today air q UV grass mugwort air q   grass mugwort air q   grass mugwort air q   grass mugwort
Thu, 17 Jul air q   grass mugwort air q   grass mugwort air q   grass mugwort air q   grass mugwort air q     mugwort air q       air q UV     air q UV     air q UV     air q UV     air q UV     air q UV     air q UV   mugwort air q UV   mugwort air q UV grass mugwort air q UV grass mugwort air q UV grass mugwort air q UV grass mugwort air q UV grass mugwort air q UV grass mugwort air q UV grass mugwort air q   grass mugwort air q     mugwort air q     mugwort
Fri, 18 Jul air q     mugwort air q     mugwort air q     mugwort air q       air q     mugwort air q     mugwort air q UV   mugwort air q UV   mugwort air q UV   mugwort air q UV   mugwort air q UV   mugwort air q UV   mugwort air q UV   mugwort air q UV grass mugwort air q UV grass mugwort air q UV grass mugwort air q UV grass mugwort air q UV grass mugwort air q UV grass mugwort air q UV grass mugwort air q UV grass mugwort air q   grass mugwort air q   grass mugwort air q   grass mugwort
Sat, 19 Jul air q   grass mugwort air q   grass mugwort air q   grass mugwort air q   grass mugwort air q   grass mugwort air q   grass mugwort air q UV grass mugwort air q UV grass mugwort air q UV grass mugwort air q UV grass mugwort air q UV grass mugwort air q UV grass mugwort air q UV grass mugwort air q UV grass mugwort air q UV grass   air q UV grass   air q UV grass   air q UV     air q UV grass   air q UV grass   air q   grass mugwort air q   grass mugwort air q   grass mugwort air q   grass mugwort

Pollens

These pollens are shown (in season):

  • Grass
  • Alder and birch (trees)
  • Mugwort and Ragweed (weeds)

When out walking, wraparound glasses, a disposable or washable facemask, and being at the front of the group, all help.

Other forecasts: Met Office, University of Worcester

UV and Air Quality

The UV forecast takes account of cloud cover.

"Air Q", the European Air Quality index, is a mix of dust/particulates, ozone, sulphur and nitrous oxides

Data

Weather data by Open-Meteo and CAMS ENSEMBLE

Brecon Beacons Visibility

Updated: Wed, 16-Jul at 20:37

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 3km 3km
Thu, 17 Jul 0km 0km 0km 0km 0km 0km 0km 0km 0km 0km 10km 13km 11km 3km 3km 2km
Fri, 18 Jul 0km 0km 0km 0km 3km 6km 0km 5km 14km 16km 18km 21km 17km 16km 12km 4km
Sat, 19 Jul 5km 6km 5km 23km 47km 56km 63km 68km 70km 71km 68km 74km 71km 71km 59km 48km
Sun, 20 Jul 8km 8km 10km 12km 14km 19km 24km 29km 32km 34km 36km 32km 28km 24km 20km 17km

Visibility in km. Above 50km is 'good'. Humidity and air pollution make it worse. Theoretical maximum is 300km/200 miles in clean dry polar air.

On the South Downs, at ~ 170m/500ft, the horizon is is ~ 45km/30 miles away. On a mountain at 1,000m/3,000ft, it is ~ 160km/100 miles away. Formula: horizon in km = √ (13 x altitude in m)

Weather data by Open-Meteo

Brecon Beacons daylight

Date Light Dawn Sunrise Max Ht. Sunset Dusk Dark Day Length
Wed, 16-Jul 03:22 04:28 05:13 13:19 21:25 22:10 23:15 17:41
Thu, 17-Jul 03:25 04:30 05:15 13:20 21:24 22:08 23:13 17:38
Fri, 18-Jul 03:27 04:31 05:16 13:20 21:23 22:07 23:11 17:35
Sat, 19-Jul 03:29 04:33 05:17 13:20 21:21 22:05 23:09 17:32
Sun, 20-Jul 03:31 04:34 05:18 13:20 21:20 22:04 23:06 17:29
Mon, 21-Jul 03:34 04:36 05:20 13:20 21:19 22:02 23:04 17:26
Tue, 22-Jul 03:36 04:38 05:21 13:20 21:18 22:01 23:02 17:23
Wed, 23-Jul 03:38 04:39 05:23 13:20 21:16 21:59 23:00 17:20
Thu, 24-Jul 03:40 04:41 05:24 13:20 21:15 21:58 22:57 17:16
Fri, 25-Jul 03:43 04:43 05:25 13:20 21:13 21:56 22:55 17:13
Sat, 26-Jul 03:45 04:44 05:27 13:20 21:12 21:54 22:53 17:10
Sun, 27-Jul 03:47 04:46 05:28 13:20 21:10 21:52 22:50 17:06
Mon, 28-Jul 03:50 04:48 05:30 13:20 21:09 21:51 22:48 17:03
Tue, 29-Jul 03:52 04:49 05:31 13:20 21:07 21:49 22:46 16:59
Wed, 30-Jul 03:54 04:51 05:33 13:20 21:06 21:47 22:43 16:55
Thu, 31-Jul 03:57 04:53 05:34 13:20 21:04 21:45 22:41 16:52
Fri, 01-Aug 03:59 04:55 05:36 13:20 21:02 21:43 22:38 16:48
Sat, 02-Aug 04:01 04:56 05:37 13:20 21:01 21:41 22:36 16:44
Sun, 03-Aug 04:04 04:58 05:39 13:19 20:59 21:39 22:33 16:41
Mon, 04-Aug 04:06 05:00 05:40 13:19 20:57 21:37 22:31 16:37
Tue, 05-Aug 04:08 05:02 05:42 13:19 20:55 21:35 22:28 16:33
Wed, 06-Aug 04:11 05:04 05:44 13:19 20:54 21:33 22:26 16:29
Thu, 07-Aug 04:13 05:05 05:45 13:19 20:52 21:31 22:23 16:25
Fri, 08-Aug 04:15 05:07 05:47 13:19 20:50 21:29 22:21 16:21
Sat, 09-Aug 04:18 05:09 05:48 13:19 20:48 21:27 22:18 16:18
Sun, 10-Aug 04:20 05:11 05:50 13:19 20:46 21:25 22:15 16:14
Mon, 11-Aug 04:22 05:13 05:52 13:18 20:44 21:23 22:13 16:10
Tue, 12-Aug 04:24 05:15 05:53 13:18 20:42 21:21 22:10 16:06
Wed, 13-Aug 04:27 05:16 05:55 13:18 20:40 21:19 22:08 16:02
Thu, 14-Aug 04:29 05:18 05:56 13:18 20:38 21:16 22:05 15:58
Fri, 15-Aug 04:31 05:20 05:58 13:18 20:36 21:14 22:03 15:54
Sat, 16-Aug 04:33 05:22 06:00 13:18 20:34 21:12 22:00 15:50
Sun, 17-Aug 04:36 05:24 06:01 13:17 20:32 21:10 21:57 15:46
Mon, 18-Aug 04:38 05:25 06:03 13:17 20:30 21:07 21:55 15:42
Tue, 19-Aug 04:40 05:27 06:04 13:17 20:28 21:05 21:52 15:37
Wed, 20-Aug 04:42 05:29 06:06 13:17 20:26 21:03 21:49 15:33
Thu, 21-Aug 04:44 05:31 06:08 13:16 20:24 21:01 21:47 15:29
Fri, 22-Aug 04:46 05:33 06:09 13:16 20:22 20:58 21:44 15:25
Sat, 23-Aug 04:49 05:34 06:11 13:16 20:20 20:56 21:42 15:21
Sun, 24-Aug 04:51 05:36 06:13 13:16 20:18 20:54 21:39 15:17
Mon, 25-Aug 04:53 05:38 06:14 13:15 20:15 20:51 21:36 15:13
Tue, 26-Aug 04:55 05:40 06:16 13:15 20:13 20:49 21:34 15:09
Wed, 27-Aug 04:57 05:41 06:17 13:15 20:11 20:47 21:31 15:05
Thu, 28-Aug 04:59 05:43 06:19 13:14 20:09 20:44 21:28 15:01
Fri, 29-Aug 05:01 05:45 06:21 13:14 20:07 20:42 21:26 14:56
Sat, 30-Aug 05:03 05:47 06:22 13:14 20:04 20:40 21:23 14:52
Sun, 31-Aug 05:05 05:49 06:24 13:14 20:02 20:37 21:21 14:48
Mon, 01-Sep 05:07 05:50 06:26 13:13 20:00 20:35 21:18 14:44
Tue, 02-Sep 05:09 05:52 06:27 13:13 19:58 20:33 21:15 14:40
Wed, 03-Sep 05:11 05:54 06:29 13:13 19:55 20:30 21:13 14:36
Thu, 04-Sep 05:13 05:55 06:30 13:12 19:53 20:28 21:10 14:32
Fri, 05-Sep 05:15 05:57 06:32 13:12 19:51 20:25 21:08 14:28
Sat, 06-Sep 05:17 05:59 06:34 13:12 19:48 20:23 21:05 14:24
Sun, 07-Sep 05:19 06:01 06:35 13:11 19:46 20:21 21:02 14:19
Mon, 08-Sep 05:21 06:02 06:37 13:11 19:44 20:18 21:00 14:15
Tue, 09-Sep 05:22 06:04 06:38 13:11 19:42 20:16 20:57 14:11
Wed, 10-Sep 05:24 06:06 06:40 13:10 19:39 20:13 20:55 14:07
Thu, 11-Sep 05:26 06:07 06:42 13:10 19:37 20:11 20:52 14:03
Fri, 12-Sep 05:28 06:09 06:43 13:09 19:35 20:09 20:50 13:59
Sat, 13-Sep 05:30 06:11 06:45 13:09 19:32 20:06 20:47 13:55
Sun, 14-Sep 05:32 06:13 06:47 13:09 19:30 20:04 20:44 13:51
Mon, 15-Sep 05:34 06:14 06:48 13:08 19:28 20:01 20:42 13:47
Tue, 16-Sep 05:35 06:16 06:50 13:08 19:25 19:59 20:39 13:43
Wed, 17-Sep 05:37 06:18 06:51 13:08 19:23 19:57 20:37 13:39
Thu, 18-Sep 05:39 06:19 06:53 13:07 19:21 19:54 20:34 13:35
Fri, 19-Sep 05:41 06:21 06:55 13:07 19:18 19:52 20:32 13:30
Sat, 20-Sep 05:43 06:23 06:56 13:07 19:16 19:50 20:29 13:26
Sun, 21-Sep 05:44 06:24 06:58 13:06 19:14 19:47 20:27 13:22
Mon, 22-Sep 05:46 06:26 07:00 13:06 19:11 19:45 20:24 13:18
Tue, 23-Sep 05:48 06:28 07:01 13:06 19:09 19:42 20:22 13:14
Wed, 24-Sep 05:50 06:29 07:03 13:05 19:07 19:40 20:20 13:10
Thu, 25-Sep 05:51 06:31 07:04 13:05 19:04 19:38 20:17 13:06
Fri, 26-Sep 05:53 06:33 07:06 13:05 19:02 19:35 20:15 13:02
Sat, 27-Sep 05:55 06:34 07:08 13:04 19:00 19:33 20:12 12:58
Sun, 28-Sep 05:57 06:36 07:09 13:04 18:57 19:31 20:10 12:54
Mon, 29-Sep 05:58 06:38 07:11 13:04 18:55 19:28 20:08 12:50
Tue, 30-Sep 06:00 06:39 07:13 13:03 18:53 19:26 20:05 12:46
Wed, 01-Oct 06:02 06:41 07:14 13:03 18:50 19:24 20:03 12:42
Thu, 02-Oct 06:03 06:43 07:16 13:03 18:48 19:22 20:01 12:39
Fri, 03-Oct 06:05 06:44 07:18 13:02 18:46 19:19 19:58 12:35
Sat, 04-Oct 06:07 06:46 07:19 13:02 18:43 19:17 19:56 12:31
Sun, 05-Oct 06:08 06:47 07:21 13:02 18:41 19:15 19:54 12:27
Mon, 06-Oct 06:10 06:49 07:23 13:01 18:39 19:12 19:51 12:23
Tue, 07-Oct 06:12 06:51 07:24 13:01 18:37 19:10 19:49 12:19
Wed, 08-Oct 06:13 06:52 07:26 13:01 18:34 19:08 19:47 12:15
Thu, 09-Oct 06:15 06:54 07:28 13:00 18:32 19:06 19:45 12:11
Fri, 10-Oct 06:17 06:56 07:30 13:00 18:30 19:04 19:43 12:07
Sat, 11-Oct 06:18 06:57 07:31 13:00 18:28 19:01 19:40 12:04
Sun, 12-Oct 06:20 06:59 07:33 13:00 18:26 18:59 19:38 12:00
Mon, 13-Oct 06:22 07:01 07:35 12:59 18:23 18:57 19:36 11:56
Tue, 14-Oct 06:23 07:02 07:36 12:59 18:21 18:55 19:34 11:52
Wed, 15-Oct 06:25 07:04 07:38 12:59 18:19 18:53 19:32 11:48
Thu, 16-Oct 06:27 07:06 07:40 12:59 18:17 18:51 19:30 11:45
Fri, 17-Oct 06:28 07:07 07:42 12:59 18:15 18:49 19:28 11:41
Sat, 18-Oct 06:30 07:09 07:43 12:58 18:13 18:47 19:26 11:37
Sun, 19-Oct 06:32 07:11 07:45 12:58 18:10 18:45 19:24 11:33
Mon, 20-Oct 06:33 07:12 07:47 12:58 18:08 18:43 19:22 11:30
Tue, 21-Oct 06:35 07:14 07:49 12:58 18:06 18:41 19:20 11:26
Wed, 22-Oct 06:37 07:16 07:50 12:58 18:04 18:39 19:18 11:22
Thu, 23-Oct 06:38 07:17 07:52 12:58 18:02 18:37 19:16 11:19
Fri, 24-Oct 06:40 07:19 07:54 12:57 18:00 18:35 19:14 11:15
Sat, 25-Oct 06:41 07:21 07:56 12:57 17:58 18:33 19:12 11:12
Sun, 26-Oct 05:43 06:23 06:57 11:57 16:56 17:31 18:10 11:08
Mon, 27-Oct 05:45 06:24 06:59 11:57 16:54 17:29 18:09 11:05
Tue, 28-Oct 05:46 06:26 07:01 11:57 16:52 17:27 18:07 11:01
Wed, 29-Oct 05:48 06:28 07:03 11:57 16:50 17:26 18:05 10:58
Thu, 30-Oct 05:50 06:29 07:05 11:57 16:49 17:24 18:03 10:54
Fri, 31-Oct 05:51 06:31 07:06 11:57 16:47 17:22 18:02 10:51
Sat, 01-Nov 05:53 06:33 07:08 11:57 16:45 17:20 18:00 10:47
Sun, 02-Nov 05:54 06:34 07:10 11:57 16:43 17:19 17:59 10:44
Mon, 03-Nov 05:56 06:36 07:12 11:57 16:41 17:17 17:57 10:41
Tue, 04-Nov 05:58 06:38 07:14 11:57 16:39 17:15 17:55 10:37
Wed, 05-Nov 05:59 06:39 07:15 11:57 16:38 17:14 17:54 10:34
Thu, 06-Nov 06:01 06:41 07:17 11:57 16:36 17:12 17:52 10:31
Fri, 07-Nov 06:02 06:43 07:19 11:57 16:34 17:11 17:51 10:28
Sat, 08-Nov 06:04 06:44 07:21 11:57 16:33 17:09 17:50 10:24
Sun, 09-Nov 06:05 06:46 07:22 11:57 16:31 17:08 17:48 10:21
Mon, 10-Nov 06:07 06:48 07:24 11:57 16:30 17:06 17:47 10:18
Tue, 11-Nov 06:08 06:49 07:26 11:57 16:28 17:05 17:46 10:15
Wed, 12-Nov 06:10 06:51 07:28 11:57 16:27 17:03 17:44 10:12
Thu, 13-Nov 06:12 06:52 07:30 11:58 16:25 17:02 17:43 10:09
Fri, 14-Nov 06:13 06:54 07:31 11:58 16:24 17:01 17:42 10:06
Sat, 15-Nov 06:15 06:56 07:33 11:58 16:22 17:00 17:41 10:03
Sun, 16-Nov 06:16 06:57 07:35 11:58 16:21 16:58 17:40 10:01
Mon, 17-Nov 06:17 06:59 07:36 11:58 16:20 16:57 17:38 09:58
Tue, 18-Nov 06:19 07:00 07:38 11:58 16:18 16:56 17:37 09:55
Wed, 19-Nov 06:20 07:02 07:40 11:59 16:17 16:55 17:36 09:53
Thu, 20-Nov 06:22 07:03 07:42 11:59 16:16 16:54 17:36 09:50
Fri, 21-Nov 06:23 07:05 07:43 11:59 16:15 16:53 17:35 09:47
Sat, 22-Nov 06:25 07:06 07:45 11:59 16:14 16:52 17:34 09:45
Sun, 23-Nov 06:26 07:08 07:46 12:00 16:13 16:51 17:33 09:43
Mon, 24-Nov 06:27 07:09 07:48 12:00 16:12 16:50 17:32 09:40
Tue, 25-Nov 06:29 07:11 07:50 12:00 16:11 16:49 17:31 09:38
Wed, 26-Nov 06:30 07:12 07:51 12:01 16:10 16:49 17:31 09:36
Thu, 27-Nov 06:31 07:14 07:53 12:01 16:09 16:48 17:30 09:34
Fri, 28-Nov 06:33 07:15 07:54 12:01 16:08 16:47 17:30 09:32
Sat, 29-Nov 06:34 07:16 07:56 12:02 16:07 16:46 17:29 09:30
Sun, 30-Nov 06:35 07:18 07:57 12:02 16:06 16:46 17:28 09:28
Mon, 01-Dec 06:36 07:19 07:59 12:02 16:06 16:45 17:28 09:26
Tue, 02-Dec 06:38 07:20 08:00 12:03 16:05 16:45 17:28 09:24
Wed, 03-Dec 06:39 07:22 08:01 12:03 16:05 16:44 17:27 09:22
Thu, 04-Dec 06:40 07:23 08:03 12:04 16:04 16:44 17:27 09:21
Fri, 05-Dec 06:41 07:24 08:04 12:04 16:04 16:44 17:27 09:19
Sat, 06-Dec 06:42 07:25 08:05 12:04 16:03 16:43 17:26 09:18
Sun, 07-Dec 06:43 07:26 08:06 12:05 16:03 16:43 17:26 09:16
Mon, 08-Dec 06:44 07:27 08:08 12:05 16:03 16:43 17:26 09:15
Tue, 09-Dec 06:45 07:28 08:09 12:06 16:03 16:43 17:26 09:14
Wed, 10-Dec 06:46 07:29 08:10 12:06 16:02 16:43 17:26 09:13
Thu, 11-Dec 06:47 07:30 08:11 12:07 16:02 16:43 17:26 09:12
Fri, 12-Dec 06:48 07:31 08:12 12:07 16:02 16:43 17:26 09:11
Sat, 13-Dec 06:49 07:32 08:13 12:08 16:02 16:43 17:26 09:10
Sun, 14-Dec 06:50 07:33 08:14 12:08 16:02 16:43 17:26 09:09
Mon, 15-Dec 06:50 07:34 08:15 12:09 16:02 16:43 17:27 09:09
Tue, 16-Dec 06:51 07:35 08:15 12:09 16:03 16:43 17:27 09:08
Wed, 17-Dec 06:52 07:35 08:16 12:09 16:03 16:44 17:27 09:08
Thu, 18-Dec 06:52 07:36 08:17 12:10 16:03 16:44 17:28 09:07
Fri, 19-Dec 06:53 07:37 08:17 12:10 16:03 16:44 17:28 09:07
Sat, 20-Dec 06:54 07:37 08:18 12:11 16:04 16:45 17:28 09:07
Sun, 21-Dec 06:54 07:38 08:19 12:11 16:04 16:45 17:29 09:07
Mon, 22-Dec 06:55 07:38 08:19 12:12 16:05 16:46 17:29 09:07
Tue, 23-Dec 06:55 07:39 08:19 12:12 16:05 16:46 17:30 09:07
Wed, 24-Dec 06:55 07:39 08:20 12:13 16:06 16:47 17:31 09:07
Thu, 25-Dec 06:56 07:39 08:20 12:13 16:07 16:48 17:31 09:08
Fri, 26-Dec 06:56 07:40 08:20 12:14 16:08 16:48 17:32 09:08
Sat, 27-Dec 06:56 07:40 08:21 12:14 16:08 16:49 17:33 09:09
Sun, 28-Dec 06:57 07:40 08:21 12:15 16:09 16:50 17:33 09:09
Mon, 29-Dec 06:57 07:40 08:21 12:15 16:10 16:51 17:34 09:10
Tue, 30-Dec 06:57 07:40 08:21 12:16 16:11 16:52 17:35 09:11
Wed, 31-Dec 06:57 07:40 08:21 12:16 16:12 16:53 17:36 09:12
Thu, 01-Jan 06:57 07:40 08:21 12:17 16:13 16:54 17:37 09:13
Fri, 02-Jan 06:57 07:40 08:21 12:17 16:14 16:55 17:38 09:14
Sat, 03-Jan 06:57 07:40 08:20 12:18 16:15 16:56 17:39 09:15
Sun, 04-Jan 06:57 07:40 08:20 12:18 16:17 16:57 17:40 09:16
Mon, 05-Jan 06:57 07:40 08:20 12:19 16:18 16:58 17:41 09:17
Tue, 06-Jan 06:57 07:40 08:20 12:19 16:19 16:59 17:42 09:19
Wed, 07-Jan 06:56 07:39 08:19 12:20 16:20 17:00 17:43 09:20
Thu, 08-Jan 06:56 07:39 08:19 12:20 16:22 17:01 17:44 09:22
Fri, 09-Jan 06:56 07:38 08:18 12:20 16:23 17:03 17:45 09:24
Sat, 10-Jan 06:55 07:38 08:18 12:21 16:24 17:04 17:47 09:25
Sun, 11-Jan 06:55 07:38 08:17 12:21 16:26 17:05 17:48 09:27

Notes

  • Max Height (solar noon) is when the sun is highest in the sky.
  • Day length is dawn to dusk as there is enough light for walking for at least 30 minutes before sunrise and after sunset, even on an overcast day.
  • At 'Light' (nautical dawn) the horizon becomes visible. At 'Dawn' (civil dawn) there is enough light to read, and drivers can switch their lights off. Finally the sun rises.
  • After sunset, there is still enough light to read until 'Dusk' (civil dusk) or lighting up time for drivers. The horizon is still visible until 'Dark' (nautical dusk).
  • Times will vary if there is a hill on the horizon.

Brecon Beacons moonlight

Moonlight chart for walking at night.

Night of Sunset Dusk Moon Visible Dawn Sunrise Phase % Full Max. Ht. Night Walk
Wed, 16-Jul 21:25 22:10 23:40 dawn 04:30 05:15 62 % 06:22
Thu, 17-Jul 21:24 22:08 23:53 dawn 04:31 05:16 51 % 07:11
Fri, 18-Jul 21:23 22:07 00:09 dawn 04:33 05:17 39 % 08:04
Sat, 19-Jul 21:21 22:05 00:30 dawn 04:34 05:18 29 % 09:01
Sun, 20-Jul 21:20 22:04 01:02 dawn 04:36 05:20 19 % 10:02
Mon, 21-Jul 21:19 22:02 01:49 dawn 04:38 05:21 11 % 11:05
Tue, 22-Jul 21:18 22:01 04:39 05:23 5 %
Wed, 23-Jul 21:16 21:59 04:17 dawn 04:41 05:24 1 % 12:08
Thu, 24-Jul 21:15 21:58 04:43 05:25 0 % 13:07
Fri, 25-Jul 21:13 21:56 dusk 21:58 04:44 05:27 2 % 14:02
Sat, 26-Jul 21:12 21:54 dusk 22:13 04:46 05:28 5 % 14:52
Sun, 27-Jul 21:10 21:52 dusk 22:25 04:48 05:30 11 % 15:37
Mon, 28-Jul 21:09 21:51 dusk 22:35 04:49 05:31 18 % 16:19
Tue, 29-Jul 21:07 21:49 dusk 22:44 04:51 05:33 26 % 17:00
Wed, 30-Jul 21:06 21:47 dusk 22:54 04:53 05:34 35 % 17:40
Thu, 31-Jul 21:04 21:45 dusk 23:05 04:55 05:36 45 % 18:22
Fri, 01-Aug 21:02 21:43 dusk 23:19 04:56 05:37 54 % 19:05
Sat, 02-Aug 21:01 21:41 dusk 23:38 04:58 05:39 64 % 19:50
Sun, 03-Aug 20:59 21:39 dusk 00:05 05:00 05:40 72 % 20:39
Mon, 04-Aug 20:57 21:37 dusk 00:43 05:02 05:42 81 % 21:31 after dusk
Tue, 05-Aug 20:55 21:35 dusk 01:37 05:04 05:44 88 % 22:25 after dusk
Wed, 06-Aug 20:54 21:33 dusk 02:45 05:05 05:45 94 % 23:20 after dusk
Thu, 07-Aug 20:52 21:31 dusk 04:05 05:07 05:47 98 % 00:14 after dusk
Fri, 08-Aug 20:50 21:29 dusk dawn 05:09 05:48 100 % 01:06 all night
Sat, 09-Aug 20:48 21:27 dusk dawn 05:11 05:50 99 % 01:56 all night
Sun, 10-Aug 20:46 21:25 dusk dawn 05:13 05:52 97 % 02:45 all night
Mon, 11-Aug 20:44 21:23 21:37 dawn 05:15 05:53 92 % 03:32 before dawn
Tue, 12-Aug 20:42 21:21 21:48 dawn 05:16 05:55 84 % 04:19 before dawn
Wed, 13-Aug 20:40 21:19 22:00 dawn 05:18 05:56 75 % 05:08 before dawn
Thu, 14-Aug 20:38 21:16 22:15 dawn 05:20 05:58 64 % 06:00
Fri, 15-Aug 20:36 21:14 22:34 dawn 05:22 06:00 53 % 06:55
Sat, 16-Aug 20:34 21:12 23:02 dawn 05:24 06:01 42 % 07:54
Sun, 17-Aug 20:32 21:10 23:43 dawn 05:25 06:03 31 % 08:56
Mon, 18-Aug 20:30 21:07 00:41 dawn 05:27 06:04 21 % 09:58
Tue, 19-Aug 20:28 21:05 01:57 dawn 05:29 06:06 12 % 10:57
Wed, 20-Aug 20:26 21:03 03:21 dawn 05:31 06:08 6 % 11:53
Thu, 21-Aug 20:24 21:01 05:33 06:09 2 %
Fri, 22-Aug 20:22 20:58 05:34 06:11 0 % 12:43
Sat, 23-Aug 20:20 20:56 05:36 06:13 1 % 13:30
Sun, 24-Aug 20:18 20:54 05:38 06:14 3 % 14:13
Mon, 25-Aug 20:15 20:51 dusk 20:52 05:40 06:16 7 % 14:55
Tue, 26-Aug 20:13 20:49 dusk 21:01 05:41 06:17 13 % 15:36
Wed, 27-Aug 20:11 20:47 dusk 21:12 05:43 06:19 21 % 16:17
Thu, 28-Aug 20:09 20:44 dusk 21:25 05:45 06:21 29 % 16:59
Fri, 29-Aug 20:07 20:42 dusk 21:41 05:47 06:22 38 % 17:43
Sat, 30-Aug 20:04 20:40 dusk 22:04 05:49 06:24 47 % 18:31
Sun, 31-Aug 20:02 20:37 dusk 22:36 05:50 06:26 57 % 19:21
Mon, 01-Sep 20:00 20:35 dusk 23:23 05:52 06:27 66 % 20:13
Tue, 02-Sep 19:58 20:33 dusk 00:24 05:54 06:29 75 % 21:07 after dusk
Wed, 03-Sep 19:55 20:30 dusk 01:39 05:55 06:30 83 % 22:01 after dusk
Thu, 04-Sep 19:53 20:28 dusk 03:02 05:57 06:32 91 % 22:54 after dusk
Fri, 05-Sep 19:51 20:25 dusk 04:28 05:59 06:34 96 % 23:46 after dusk
Sat, 06-Sep 19:48 20:23 dusk 05:55 06:01 06:35 99 % 00:35 after dusk
Sun, 07-Sep 19:46 20:21 dusk dawn 06:02 06:37 100 % 01:24 all night
Mon, 08-Sep 19:44 20:18 dusk dawn 06:04 06:38 98 % 02:12 all night
Tue, 09-Sep 19:42 20:16 dusk dawn 06:06 06:40 93 % 03:02 all night
Wed, 10-Sep 19:39 20:13 20:21 dawn 06:07 06:42 86 % 03:54 before dawn
Thu, 11-Sep 19:37 20:11 20:39 dawn 06:09 06:43 77 % 04:50 before dawn
Fri, 12-Sep 19:35 20:09 21:04 dawn 06:11 06:45 67 % 05:49
Sat, 13-Sep 19:32 20:06 21:41 dawn 06:13 06:47 56 % 06:50
Sun, 14-Sep 19:30 20:04 22:34 dawn 06:14 06:48 44 % 07:52
Mon, 15-Sep 19:28 20:01 23:44 dawn 06:16 06:50 33 % 08:52
Tue, 16-Sep 19:25 19:59 01:05 dawn 06:18 06:51 24 % 09:48
Wed, 17-Sep 19:23 19:57 02:30 dawn 06:19 06:53 15 % 10:39
Thu, 18-Sep 19:21 19:54 03:52 dawn 06:21 06:55 8 % 11:26
Fri, 19-Sep 19:18 19:52 06:23 06:56 4 %
Sat, 20-Sep 19:16 19:50 06:24 06:58 1 % 12:10
Sun, 21-Sep 19:14 19:47 06:26 07:00 0 % 12:51
Mon, 22-Sep 19:11 19:45 06:28 07:01 1 % 13:32
Tue, 23-Sep 19:09 19:42 06:29 07:03 4 % 14:13
Wed, 24-Sep 19:07 19:40 06:31 07:04 9 % 14:54
Thu, 25-Sep 19:04 19:38 dusk 19:47 06:33 07:06 15 % 15:38
Fri, 26-Sep 19:02 19:35 dusk 20:07 06:34 07:08 23 % 16:24
Sat, 27-Sep 19:00 19:33 dusk 20:35 06:36 07:09 31 % 17:13
Sun, 28-Sep 18:57 19:31 dusk 21:14 06:38 07:11 40 % 18:04
Mon, 29-Sep 18:55 19:28 dusk 22:09 06:39 07:13 50 % 18:57
Tue, 30-Sep 18:53 19:26 dusk 23:17 06:41 07:14 60 % 19:50
Wed, 01-Oct 18:50 19:24 dusk 00:35 06:43 07:16 69 % 20:42
Thu, 02-Oct 18:48 19:22 dusk 01:58 06:44 07:18 79 % 21:33 after dusk
Fri, 03-Oct 18:46 19:19 dusk 03:23 06:46 07:19 87 % 22:23 after dusk
Sat, 04-Oct 18:43 19:17 dusk 04:50 06:47 07:21 93 % 23:11 after dusk
Sun, 05-Oct 18:41 19:15 dusk 06:17 06:49 07:23 98 % 00:00 after dusk
Mon, 06-Oct 18:39 19:12 dusk dawn 06:51 07:24 100 % 00:49 all night
Tue, 07-Oct 18:37 19:10 dusk dawn 06:52 07:26 99 % 01:42 all night
Wed, 08-Oct 18:34 19:08 dusk dawn 06:54 07:28 95 % 02:37 all night
Thu, 09-Oct 18:32 19:06 19:06 dawn 06:56 07:30 89 % 03:37 before dawn
Fri, 10-Oct 18:30 19:04 19:39 dawn 06:57 07:31 80 % 04:40 before dawn
Sat, 11-Oct 18:28 19:01 20:27 dawn 06:59 07:33 70 % 05:44
Sun, 12-Oct 18:26 18:59 21:34 dawn 07:01 07:35 59 % 06:46
Mon, 13-Oct 18:23 18:57 22:53 dawn 07:02 07:36 48 % 07:44
Tue, 14-Oct 18:21 18:55 00:17 dawn 07:04 07:38 37 % 08:36
Wed, 15-Oct 18:19 18:53 01:40 dawn 07:06 07:40 27 % 09:24
Thu, 16-Oct 18:17 18:51 02:59 dawn 07:07 07:42 19 % 10:09
Fri, 17-Oct 18:15 18:49 04:14 dawn 07:09 07:43 12 % 10:50
Sat, 18-Oct 18:13 18:47 05:27 dawn 07:11 07:45 6 % 11:31
Sun, 19-Oct 18:10 18:45 07:12 07:47 2 %
Mon, 20-Oct 18:08 18:43 07:14 07:49 0 % 12:11
Tue, 21-Oct 18:06 18:41 07:16 07:50 0 % 12:52
Wed, 22-Oct 18:04 18:39 07:17 07:52 2 % 13:35
Thu, 23-Oct 18:02 18:37 07:19 07:54 5 % 14:20
Fri, 24-Oct 18:00 18:35 dusk 18:37 07:21 07:56 10 % 15:08
Sat, 25-Oct 17:58 18:33 dusk 19:12 06:23 06:57 17 % 15:58
Sun, 26-Oct 16:56 17:31 dusk 19:01 06:24 06:59 25 % 15:50
Mon, 27-Oct 16:54 17:29 dusk 20:03 06:26 07:01 34 % 16:42
Tue, 28-Oct 16:52 17:27 dusk 21:16 06:28 07:03 43 % 17:33
Wed, 29-Oct 16:50 17:26 dusk 22:35 06:29 07:05 53 % 18:23
Thu, 30-Oct 16:49 17:24 dusk 23:57 06:31 07:06 64 % 19:12
Fri, 31-Oct 16:47 17:22 dusk 01:19 06:33 07:08 74 % 19:59
Sat, 01-Nov 16:45 17:20 dusk 02:44 06:34 07:10 83 % 20:46 after dusk
Sun, 02-Nov 16:43 17:19 dusk 04:11 06:36 07:12 91 % 21:34 after dusk
Mon, 03-Nov 16:41 17:17 dusk 05:42 06:38 07:14 96 % 22:25 after dusk
Tue, 04-Nov 16:39 17:15 dusk dawn 06:39 07:15 99 % 23:19 all night
Wed, 05-Nov 16:38 17:14 dusk dawn 06:41 07:17 100 % 00:18 all night
Thu, 06-Nov 16:36 17:12 dusk dawn 06:43 07:19 97 % 01:21 all night
Fri, 07-Nov 16:34 17:11 17:16 dawn 06:44 07:21 91 % 02:28 before dawn
Sat, 08-Nov 16:33 17:09 18:17 dawn 06:46 07:22 83 % 03:33 before dawn
Sun, 09-Nov 16:31 17:08 19:35 dawn 06:48 07:24 74 % 04:35
Mon, 10-Nov 16:30 17:06 21:01 dawn 06:49 07:26 63 % 05:31
Tue, 11-Nov 16:28 17:05 22:27 dawn 06:51 07:28 53 % 06:22
Wed, 12-Nov 16:27 17:03 23:48 dawn 06:52 07:30 42 % 07:07
Thu, 13-Nov 16:25 17:02 01:04 dawn 06:54 07:31 32 % 07:50
Fri, 14-Nov 16:24 17:01 02:18 dawn 06:56 07:33 23 % 08:30
Sat, 15-Nov 16:22 17:00 03:30 dawn 06:57 07:35 16 % 09:11
Sun, 16-Nov 16:21 16:58 04:41 dawn 06:59 07:36 9 % 09:51
Mon, 17-Nov 16:20 16:57 05:54 dawn 07:00 07:38 5 % 10:33
Tue, 18-Nov 16:18 16:56 07:02 07:40 2 % 11:17
Wed, 19-Nov 16:17 16:55 07:03 07:42 0 %
Thu, 20-Nov 16:16 16:54 07:05 07:43 1 % 12:04
Fri, 21-Nov 16:15 16:53 07:06 07:45 3 % 12:54
Sat, 22-Nov 16:14 16:52 dusk 16:58 07:08 07:46 7 % 13:45
Sun, 23-Nov 16:13 16:51 dusk 17:56 07:09 07:48 12 % 14:37
Mon, 24-Nov 16:12 16:50 dusk 19:05 07:11 07:50 19 % 15:29
Tue, 25-Nov 16:11 16:49 dusk 20:21 07:12 07:51 28 % 16:19
Wed, 26-Nov 16:10 16:49 dusk 21:40 07:14 07:53 37 % 17:07
Thu, 27-Nov 16:09 16:48 dusk 23:00 07:15 07:54 47 % 17:53
Fri, 28-Nov 16:08 16:47 dusk 00:20 07:16 07:56 58 % 18:38
Sat, 29-Nov 16:07 16:46 dusk 01:42 07:18 07:57 68 % 19:24
Sun, 30-Nov 16:06 16:46 dusk 03:07 07:19 07:59 78 % 20:11 after dusk
Mon, 01-Dec 16:06 16:45 dusk 04:38 07:20 08:00 87 % 21:02 after dusk
Tue, 02-Dec 16:05 16:45 dusk 06:13 07:22 08:01 94 % 21:57 after dusk
Wed, 03-Dec 16:05 16:44 dusk dawn 07:23 08:03 98 % 22:58 all night
Thu, 04-Dec 16:04 16:44 dusk dawn 07:24 08:04 100 % 00:03 all night
Fri, 05-Dec 16:04 16:44 dusk dawn 07:25 08:05 98 % 01:11 all night
Sat, 06-Dec 16:03 16:43 17:07 dawn 07:26 08:06 94 % 02:17 before dawn
Sun, 07-Dec 16:03 16:43 18:34 dawn 07:27 08:08 87 % 03:18 before dawn
Mon, 08-Dec 16:03 16:43 20:03 dawn 07:28 08:09 79 % 04:13 before dawn
Tue, 09-Dec 16:03 16:43 21:29 dawn 07:29 08:10 69 % 05:02
Wed, 10-Dec 16:02 16:43 22:50 dawn 07:30 08:11 59 % 05:47
Thu, 11-Dec 16:02 16:43 00:06 dawn 07:31 08:12 49 % 06:29
Fri, 12-Dec 16:02 16:43 01:19 dawn 07:32 08:13 39 % 07:09
Sat, 13-Dec 16:02 16:43 02:31 dawn 07:33 08:14 30 % 07:50
Sun, 14-Dec 16:02 16:43 03:43 dawn 07:34 08:15 22 % 08:31
Mon, 15-Dec 16:02 16:43 04:56 dawn 07:35 08:15 14 % 09:15
Tue, 16-Dec 16:03 16:43 06:10 dawn 07:35 08:16 8 % 10:01
Wed, 17-Dec 16:03 16:44 07:21 dawn 07:36 08:17 4 % 10:50
Thu, 18-Dec 16:03 16:44 07:37 08:17 1 % 11:41
Fri, 19-Dec 16:03 16:44 07:37 08:18 0 %
Sat, 20-Dec 16:04 16:45 07:38 08:19 1 % 12:33
Sun, 21-Dec 16:04 16:45 dusk 16:56 07:38 08:19 4 % 13:25
Mon, 22-Dec 16:05 16:46 dusk 18:11 07:39 08:19 8 % 14:16
Tue, 23-Dec 16:05 16:46 dusk 19:30 07:39 08:20 14 % 15:05
Wed, 24-Dec 16:06 16:47 dusk 20:48 07:39 08:20 22 % 15:51
Thu, 25-Dec 16:07 16:48 dusk 22:07 07:40 08:20 31 % 16:36
Fri, 26-Dec 16:08 16:48 dusk 23:26 07:40 08:21 41 % 17:20
Sat, 27-Dec 16:08 16:49 dusk 00:47 07:40 08:21 52 % 18:05
Sun, 28-Dec 16:09 16:50 dusk 02:12 07:40 08:21 63 % 18:52
Mon, 29-Dec 16:10 16:51 dusk 03:42 07:40 08:21 74 % 19:43
Tue, 30-Dec 16:11 16:52 dusk 05:15 07:40 08:21 84 % 20:39 after dusk
Wed, 31-Dec 16:12 16:53 dusk 06:45 07:40 08:21 91 % 21:40 after dusk
Thu, 01-Jan 16:13 16:54 dusk dawn 07:40 08:21 97 % 22:46 all night
Fri, 02-Jan 16:14 16:55 dusk dawn 07:40 08:20 100 % 23:53 all night
Sat, 03-Jan 16:15 16:56 dusk dawn 07:40 08:20 99 % 00:57 all night
Sun, 04-Jan 16:17 16:57 17:29 dawn 07:40 08:20 96 % 01:57 before dawn
Mon, 05-Jan 16:18 16:58 19:00 dawn 07:40 08:20 91 % 02:50 before dawn
Tue, 06-Jan 16:19 16:59 20:25 dawn 07:39 08:19 84 % 03:38 before dawn
Wed, 07-Jan 16:20 17:00 21:46 dawn 07:39 08:19 76 % 04:23 before dawn
Thu, 08-Jan 16:22 17:01 23:02 dawn 07:38 08:18 66 % 05:05
Fri, 09-Jan 16:23 17:03 00:16 dawn 07:38 08:18 57 % 05:46
Sat, 10-Jan 16:24 17:04 01:29 dawn 07:38 08:17 47 % 06:28
Sun, 11-Jan 16:26 17:05 02:43 dawn 07:37 08:16 37 % 07:11

Notes

  • The percentage of the moon which is illuminated doesn't vary much with location.
  • A full moon is not just bigger, it is much brighter. A quarter moon (1/2 disk visible) give less than 5% of the illumination of a full moon. You can walk with a quarter moon if its high in the sky (after dusk for a growing moon, before dawn for a shrinking moon).
  • Sky glow (light reflected by air or clouds) from nearby cities, and especially snow on the ground also effect light levels.
  • Times will vary a few minutes, as (i) these figures are for the centre of the county the walk is in, (ii) if there are hills on the horizon, and (iii) if you are on a hill
  • Sunlight is ~ 1,000,000 times brighter than moonlight.
  • Of course, you need a cloudless night as well!

Brecon Beacons weather (Accuweather)

Now would be a good time for a cup of tea.