Llangynidr to Bwlch or Circular Walk

Up a tight valley to the Chartist Cave in the limestone uplands of Mynydd Llangynidr, return along the rim of the Crawnon Valley.

Hiking weather forecast

Brecon Beacons hourly weather (Visual Crossing)

Sunset: 16:03. Dusk: 16:43. Dark: 17:26. Moon 87% (18:34 to dawn)

Updated: Sun, 07-Dec at 14:39

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 0% 100% 0% 100% 100% 100% 100% 100% 0% 58% 58% 58% 58% 42% 42% 42%
Mon, 08 Dec 94% 52% 52% 52% 52% 52% 52% 81% 81% 81% 81% 81% 81% 61% 61% 61%
Tue, 09 Dec 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 97% 97% 97%
Wed, 10 Dec 39% 16% 16% 16% 16% 16% 16% 3% 3% 3% 3% 3% 3% 10% 10% 10%
Thu, 11 Dec 16% 29% 29% 29% 29% 29% 29% 36% 36% 36% 36% 36% 36% 52% 52% 52%
Fri, 12 Dec 58% 39% 39% 39% 39% 39% 39% 45% 45% 45% 45% 45% 45% 58% 58% 58%
Sat, 13 Dec 61% 55% 55% 55% 55% 55% 55% 42% 42% 42% 42% 42% 42% 45% 45% 45%
Sun, 14 Dec 36% 42% 42% 42% 42% 42% 42% 42% 42% 42% 42% 42% 42% 45% 45% 45%
Mon, 15 Dec 39% 48% 48% 48% 48% 48% 48% 36% 36% 36% 36% 36% 36% 42% 42% 42%
Tue, 16 Dec 39% 55% 55% 55% 55% 55% 55% 48% 48% 48% 48% 48% 48% 42% 42% 42%
Wed, 17 Dec 36% 32% 32% 32% 32% 32% 32% 42% 42% 42% 42% 42% 42% 32% 32% 32%
Thu, 18 Dec 🌫 32% 55% 55% 55% 55% 55% 55% 65% 65% 65% 65% 65% 65% 77% 77% 77%
Fri, 19 Dec 55% 45% 45% 45% 45% 45% 45% 52% 52% 52% 52% 52% 52% 55% 55% 55%
Sat, 20 Dec 42% 42% 42% 42% 42% 42% 42% 45% 45% 45% 45% 45% 45% 36% 36% 36%
Sun, 21 Dec 19% 32% 32% 32% 32% 32% 32% 42% 42% 42% 42% 42% 42% 32% 32% 32%

Percentages are the chance of rain.

Weather data by Visual Crossing

Brecon Beacons hourly weather (Open Meteo)

Sunset: 16:03. Dusk: 16:43. Dark: 17:26. Moon 87% (18:34 to dawn)

Updated: Sun, 07-Dec at 14:36

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 100% 98% 86% 68% 53% 42% 32% 24%
Mon, 08 Dec 90% 79% 62% 🌫 51% 53% 61% 69% 75% 81% 82% 74% 🌫 61% 51% 45% 42% 43%
Tue, 09 Dec 100% 100% 100% 100% 100% 100% 100% 98% 95% 90% 81% 69% 59% 51% 45% 41%
Wed, 10 Dec 39% 41% 45% 49% 56% 63% 69% 73% 75% 71% 55% 32% 16% 14% 18% 22%
Thu, 11 Dec 37% 35% 32% 31% 32% 35% 37% 39% 41% 43% 47% 51% 55% 58% 61% 63%
Fri, 12 Dec 51% 49% 47% 45% 43% 40% 39% 40% 43% 45% 45% 45% 43% 39% 34% 31%
Sat, 13 Dec 43% 50% 58% 65% 66% 66% 65% 66% 68% 69% 70% 71% 71% 70% 68% 66%
Sun, 14 Dec 67% 67% 67% 67% 67% 67% 67% 68% 69% 70% 71% 71% 71% 69% 66% 63%
Mon, 15 Dec 59% 59% 59% 59% 59% 59% 59% 59% 60% 60% 60% 61% 61% 61% 62% 62%
Tue, 16 Dec 73% 73% 73% 72% 71% 71% 71% 72% 74% 75% 76% 78% 78% 76% 74% 71%
Wed, 17 Dec 63% 63% 63% 63% 63% 63% 63% 64% 64% 65% 65% 65% 65% 64% 62% 60%
Thu, 18 Dec 59% 60% 61% 61% 61% 61% 61% 60% 59% 57% 55% 53% 51% 49% 47% 45%
Fri, 19 Dec 53% 54% 55% 55% 55% 55% 55% 55% 54% 54% 54% 53% 53% 54% 55% 56%
Sat, 20 Dec 41% 42% 45% 48% 51% 54% 57% 59% 60% 60% 60% 60% 59% 57% 53% 50%
Sun, 21 Dec 43% 44% 45% 46% 47% 48% 49% 50% 50% 50% 50% 49% 49% 48% 48% 47%
Mon, 22 Dec 23% 26% 29% 32% 35% 38% 39% 38% 36% 34% 31% 28% 26% 24% 23% 22%

Percentages are the chance of rain.

Weather data by Open-Meteo

Brecon Beacons hourly weather (Met Office)

Sunset: 16:03. Dusk: 16:43. Dark: 17:26. Moon 87% (18:34 to dawn)

Updated: Sun, 07-Dec at 14:00

06 09 12 15 18 21
Today 59% 12% 5%
Mon, 08 Dec 66% 53% 50% 75% 52% 91%
Tue, 09 Dec 98% 98% 96% 87% 15% 15%
Wed, 10 Dec 20% 57% 58% 35% 3% 2%
Thu, 11 Dec 14% 17% 24% 54% 52% 55%
Fri, 12 Dec 73% 23% 21% 22% 21% 36%
Sat, 13 Dec 73% 55% 60% 73% 53% 72%
Sun, 14 Dec 73% 72% 71%

Percentages are the chance of rain.

Weather data by Met Office

Regional weather (Met Office)

Sunset: 16:03. Dusk: 16:43. Dark: 17:26. Moon 87% (18:34 to dawn)

Updated: Sun, 07-Dec at 14:38

Wales

Remaining unsettled, with strong winds at times.

  • A wet and windy day as a band of rain continues to push northeastwards bringing prolonged and heavy downpours, accompanied by strong winds
  • Some clear and drier spells possible through the evening
  • Feeling milder than recent days
  • Maximum Temperature 14C

Tonight:

  • Remaining largely dry overnight with some patchy cloud, however, from midnight occasional heavy showers feed in from the west, these blustery at times and carry a chance of thunder
  • Minimum Temperature 8C

Monday:

  • A widely fine and dry day, though often breezy with occasional heavy showers
  • Turning increasingly cloudy with strengthening winds overnight as a band of heavy rain spreads northeastwards
  • Maximum Temperature 10C

Day 3-5 : Outlook for Tuesday to Thursday:

  • Heavy rain and strong winds on Tuesday, with gales possible, though some brighter spells through the afternoon
  • Wednesday brings occasional showers and sunny spells, before turning briefly settled on Thursday

UK Day 6-7 and week 2

  • A continuation of a similar pattern to that seen through early December is anticipated, especially at first, as frontal systems from the Atlantic spread into and across the UK, interspersed with some temporary drier interludes
  • These will bring occasional spells of rain, which may be heavy at times leading to the risk of some impacts given how wet it has been lately
  • In addition, there may also be potential for some periods of strong winds at times too
  • Whilst it will often be mild, later in the period there may be a slight downward trend in temperature, especially across northern parts of the UK where there may also be a slightly higher chance of some wintry hazards at times

UK Week 3 and 4

  • Changeable conditions are expected across the UK during this period
  • Low pressure systems will probably dominate, meaning showers or longer spells of rain, heavy at times, for much of the UK and some hill snow in the north
  • Periods of strong wind are also possible, especially around coasts
  • Some drier, more settled spells are possible but how long these last is very uncertain
  • Temperatures will likely be close to average or slightly above overall

Weather data by Met Office

Brecon Beacons mountain weather forecast (Met Office)

Sunset: 16:03. Dusk: 16:43. Dark: 17:26. Moon 87% (18:34 to dawn)

Updated: Sun, 07-Dec at 03:50

Specialist mountain forecast: MWIS

Today
Sun, 07-Dec

Wet and windy with low cloud during the day.

A wet day with spells of rain or drizzle, turning heavy at times into the afternoon. Rain clearing soon after dark then clear spells and a few showers in the evening. Strong winds developing with summit gales in the afternoon and evening.

Low risk Severe Chill Effect Heavy Persistent Rain
Low risk Severe Chill Effect Heavy Persistent Rain
Medium risk Gales
High risk Poor Visibility
Chance of Cloud free tops Nil chance for much of the day, but improving to perhaps 70% during the evening.
Ground conditions Please see - https://yrwyddfa.live/
Visibility Patchy low cloud on the tops becoming extensive and lowering into the morning. Cloud and fog extensive above 300 or 400m for most of the day bringing difficult navigation conditions. Cloud slowly lifting after dark but continuing to affect higher summits.
Confidence High for unsettled and changeable conditions during this period with potential for stormy conditions on Tuesday. Lower confidence for wind and rain details from Tuesday.
View Gusts of 50 to 60mph above 600m for a time in the afternoon. Difficult and potentially dangerous conditions on high exposed ridges and summits with slippery surfaces and a chance of being blown off balance.

Conditions on the tops at 900m

Time Weather Rain Temp Wind Freezing
06:00 Mist 30% 5 25 2300m
09:00 Drizzle 90% 6 30 2200m
12:00 Heavy Rain >95% 7 37 2700m
15:00 Heavy Rain >95% 8 48 2300m
18:00 Light rain showers (night) 60% 4 41 1600m
21:00 Partly cloudy (night) 20% 4 36 1400m
Mon, 08-Dec

Showers moving east during the early morning, some heavy with a small chance of hail and thunder. Otherwise largely dry with clear or sunny spells by day but remaining breezy. More persistent rain and stronger winds spreading north during the evening.

Ice Above summits.
Visibility Patchy cloud to 500 or 600m during the morning as showers move through, lifting above summits into the day. Mostly good visibility.
Wind South or Southwest 20 to 30mph with gusts 40 to 50mph.
Temp (tops) Plus 4 or 5C. at 800m
Tue, 09-Dec

Very windy conditions with storm force winds likely for a time. A period of heavy rain in the morning followed by bright spells and showers. Freezing level above summits.

Wed, 10-Dec

Bright spells and showers. Very strong and gusty westerly winds with severe gales at height. Freezing level above summits.

Thu, 11-Dec

A window of drier and brighter weather with lighter winds is possible. Low confidence.

Weather data by Met Office

Brecon Beacons Air Quality (Pollen and UV)

Updated: Sun, 07-Dec at 14:37

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 air q   air q   air q   air q   air q   air q   air q   air q   air q  
Mon, 08 Dec air q   air q   air q   air q   air q   air q   air q   air q   air q   air q UV air q UV air q UV air q UV air q UV air q UV air q UV air q   air q   air q   air q   air q   air q   air q   air q  
Tue, 09 Dec air q   air q   air q   air q   air q   air q   air q   air q   air q   air q   air q UV air q UV air q UV air q UV air q UV air q   air q   air q   air q   air q   air q   air q   air q   air q  
Wed, 10 Dec air q   air q   air q   air q   air q   air q   air q   air q   air q   air q UV air q UV air q UV air q UV air q UV air q UV air q UV air q   air q   air q   air q   air q   air q   air q   air q  

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: Sun, 07-Dec at 14:36

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 0km 0km 2km 2km 2km 2km 2km 2km
Mon, 08 Dec 1km 1km 1km 0km 1km 1km 2km 2km 2km 2km 2km 0km 2km 0km 0km 0km
Tue, 09 Dec 0km 0km 0km 0km 0km 0km 0km 0km 0km 2km 1km 2km 10km 22km 26km 27km
Wed, 10 Dec 34km 32km 28km 34km 12km 39km 33km 33km 34km 39km 46km 44km 45km 50km 50km 50km
Thu, 11 Dec 38km 42km 46km 50km 50km 50km 50km 50km 49km 48km 46km 43km 41km 30km 20km 10km

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
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
Mon, 12-Jan 06:54 07:37 08:16 12:22 16:27 17:07 17:49 09:29
Tue, 13-Jan 06:54 07:36 08:15 12:22 16:29 17:08 17:50 09:31
Wed, 14-Jan 06:53 07:36 08:15 12:22 16:30 17:09 17:52 09:33
Thu, 15-Jan 06:53 07:35 08:14 12:23 16:32 17:11 17:53 09:35
Fri, 16-Jan 06:52 07:34 08:13 12:23 16:34 17:12 17:54 09:38
Sat, 17-Jan 06:51 07:33 08:12 12:23 16:35 17:14 17:56 09:40
Sun, 18-Jan 06:51 07:33 08:11 12:24 16:37 17:15 17:57 09:42
Mon, 19-Jan 06:50 07:32 08:10 12:24 16:38 17:17 17:59 09:45
Tue, 20-Jan 06:49 07:31 08:09 12:24 16:40 17:18 18:00 09:47
Wed, 21-Jan 06:48 07:30 08:08 12:25 16:42 17:20 18:02 09:50
Thu, 22-Jan 06:47 07:29 08:07 12:25 16:44 17:22 18:03 09:52
Fri, 23-Jan 06:46 07:28 08:05 12:25 16:45 17:23 18:05 09:55
Sat, 24-Jan 06:45 07:27 08:04 12:25 16:47 17:25 18:06 09:58
Sun, 25-Jan 06:44 07:25 08:03 12:26 16:49 17:26 18:08 10:00
Mon, 26-Jan 06:43 07:24 08:02 12:26 16:51 17:28 18:09 10:03
Tue, 27-Jan 06:42 07:23 08:00 12:26 16:52 17:30 18:11 10:06
Wed, 28-Jan 06:41 07:22 07:59 12:26 16:54 17:31 18:12 10:09
Thu, 29-Jan 06:40 07:20 07:57 12:26 16:56 17:33 18:14 10:12
Fri, 30-Jan 06:38 07:19 07:56 12:27 16:58 17:35 18:15 10:15
Sat, 31-Jan 06:37 07:18 07:54 12:27 17:00 17:36 18:17 10:18
Sun, 01-Feb 06:36 07:16 07:53 12:27 17:01 17:38 18:19 10:21
Mon, 02-Feb 06:34 07:15 07:51 12:27 17:03 17:40 18:20 10:24
Tue, 03-Feb 06:33 07:13 07:50 12:27 17:05 17:41 18:22 10:28
Wed, 04-Feb 06:32 07:12 07:48 12:27 17:07 17:43 18:23 10:31
Thu, 05-Feb 06:30 07:10 07:46 12:27 17:09 17:45 18:25 10:34
Fri, 06-Feb 06:29 07:09 07:45 12:27 17:11 17:47 18:27 10:37
Sat, 07-Feb 06:27 07:07 07:43 12:27 17:13 17:48 18:28 10:41
Sun, 08-Feb 06:26 07:05 07:41 12:27 17:14 17:50 18:30 10:44
Mon, 09-Feb 06:24 07:04 07:39 12:27 17:16 17:52 18:32 10:48
Tue, 10-Feb 06:22 07:02 07:38 12:27 17:18 17:54 18:33 10:51
Wed, 11-Feb 06:21 07:00 07:36 12:27 17:20 17:55 18:35 10:54
Thu, 12-Feb 06:19 06:59 07:34 12:27 17:22 17:57 18:37 10:58
Fri, 13-Feb 06:17 06:57 07:32 12:27 17:24 17:59 18:38 11:02
Sat, 14-Feb 06:16 06:55 07:30 12:27 17:26 18:01 18:40 11:05
Sun, 15-Feb 06:14 06:53 07:28 12:27 17:27 18:02 18:42 11:09
Mon, 16-Feb 06:12 06:51 07:26 12:27 17:29 18:04 18:43 11:12
Tue, 17-Feb 06:10 06:49 07:24 12:27 17:31 18:06 18:45 11:16
Wed, 18-Feb 06:08 06:48 07:22 12:27 17:33 18:08 18:47 11:20
Thu, 19-Feb 06:07 06:46 07:20 12:27 17:35 18:09 18:49 11:23
Fri, 20-Feb 06:05 06:44 07:18 12:27 17:37 18:11 18:50 11:27
Sat, 21-Feb 06:03 06:42 07:16 12:27 17:39 18:13 18:52 11:31
Sun, 22-Feb 06:01 06:40 07:14 12:27 17:40 18:15 18:54 11:34
Mon, 23-Feb 05:59 06:38 07:12 12:27 17:42 18:16 18:55 11:38
Tue, 24-Feb 05:57 06:36 07:10 12:26 17:44 18:18 18:57 11:42
Wed, 25-Feb 05:55 06:34 07:08 12:26 17:46 18:20 18:59 11:46
Thu, 26-Feb 05:53 06:32 07:06 12:26 17:48 18:22 19:01 11:50
Fri, 27-Feb 05:51 06:29 07:03 12:26 17:49 18:23 19:02 11:53
Sat, 28-Feb 05:49 06:27 07:01 12:26 17:51 18:25 19:04 11:57
Sun, 01-Mar 05:46 06:25 06:59 12:26 17:53 18:27 19:06 12:01
Mon, 02-Mar 05:44 06:23 06:57 12:25 17:55 18:29 19:08 12:05
Tue, 03-Mar 05:42 06:21 06:55 12:25 17:57 18:30 19:09 12:09
Wed, 04-Mar 05:40 06:19 06:52 12:25 17:58 18:32 19:11 12:13
Thu, 05-Mar 05:38 06:17 06:50 12:25 18:00 18:34 19:13 12:17
Fri, 06-Mar 05:36 06:14 06:48 12:25 18:02 18:36 19:15 12:21
Sat, 07-Mar 05:33 06:12 06:46 12:24 18:04 18:37 19:16 12:25
Sun, 08-Mar 05:31 06:10 06:44 12:24 18:05 18:39 19:18 12:29
Mon, 09-Mar 05:29 06:08 06:41 12:24 18:07 18:41 19:20 12:33
Tue, 10-Mar 05:27 06:06 06:39 12:24 18:09 18:43 19:22 12:37
Wed, 11-Mar 05:24 06:03 06:37 12:23 18:11 18:44 19:23 12:41
Thu, 12-Mar 05:22 06:01 06:34 12:23 18:13 18:46 19:25 12:45
Fri, 13-Mar 05:20 05:59 06:32 12:23 18:14 18:48 19:27 12:49
Sat, 14-Mar 05:17 05:56 06:30 12:22 18:16 18:50 19:29 12:53
Sun, 15-Mar 05:15 05:54 06:28 12:22 18:18 18:51 19:31 12:57
Mon, 16-Mar 05:13 05:52 06:25 12:22 18:19 18:53 19:32 13:01
Tue, 17-Mar 05:10 05:50 06:23 12:22 18:21 18:55 19:34 13:05
Wed, 18-Mar 05:08 05:47 06:21 12:21 18:23 18:57 19:36 13:09
Thu, 19-Mar 05:05 05:45 06:18 12:21 18:25 18:58 19:38 13:13
Fri, 20-Mar 05:03 05:43 06:16 12:21 18:26 19:00 19:40 13:17
Sat, 21-Mar 05:01 05:40 06:14 12:20 18:28 19:02 19:42 13:21
Sun, 22-Mar 04:58 05:38 06:11 12:20 18:30 19:04 19:44 13:25
Mon, 23-Mar 04:56 05:36 06:09 12:20 18:32 19:05 19:45 13:29
Tue, 24-Mar 04:53 05:33 06:07 12:20 18:33 19:07 19:47 13:33
Wed, 25-Mar 04:51 05:31 06:05 12:19 18:35 19:09 19:49 13:37
Thu, 26-Mar 04:48 05:28 06:02 12:19 18:37 19:11 19:51 13:42
Fri, 27-Mar 04:46 05:26 06:00 12:19 18:38 19:12 19:53 13:46
Sat, 28-Mar 04:43 05:24 05:58 12:18 18:40 19:14 19:55 13:50
Sun, 29-Mar 05:41 06:21 06:55 13:18 19:42 20:16 20:57 13:54
Mon, 30-Mar 05:38 06:19 06:53 13:18 19:44 20:18 20:59 13:58
Tue, 31-Mar 05:36 06:17 06:51 13:17 19:45 20:19 21:01 14:02
Wed, 01-Apr 05:33 06:14 06:48 13:17 19:47 20:21 21:03 14:06
Thu, 02-Apr 05:31 06:12 06:46 13:17 19:49 20:23 21:05 14:11
Fri, 03-Apr 05:28 06:10 06:44 13:17 19:50 20:25 21:07 14:15
Sat, 04-Apr 05:25 06:07 06:42 13:16 19:52 20:27 21:09 14:19
Sun, 05-Apr 05:23 06:05 06:39 13:16 19:54 20:28 21:11 14:23
Mon, 06-Apr 05:20 06:02 06:37 13:16 19:55 20:30 21:13 14:27
Tue, 07-Apr 05:18 06:00 06:35 13:15 19:57 20:32 21:15 14:31
Wed, 08-Apr 05:15 05:58 06:33 13:15 19:59 20:34 21:17 14:36
Thu, 09-Apr 05:13 05:55 06:30 13:15 20:01 20:36 21:19 14:40
Fri, 10-Apr 05:10 05:53 06:28 13:15 20:02 20:37 21:21 14:44
Sat, 11-Apr 05:07 05:51 06:26 13:14 20:04 20:39 21:23 14:48
Sun, 12-Apr 05:05 05:48 06:24 13:14 20:06 20:41 21:25 14:52
Mon, 13-Apr 05:02 05:46 06:21 13:14 20:07 20:43 21:27 14:57
Tue, 14-Apr 05:00 05:44 06:19 13:14 20:09 20:45 21:29 15:01
Wed, 15-Apr 04:57 05:41 06:17 13:13 20:11 20:47 21:31 15:05
Thu, 16-Apr 04:54 05:39 06:15 13:13 20:12 20:49 21:33 15:09
Fri, 17-Apr 04:52 05:37 06:13 13:13 20:14 20:50 21:36 15:13
Sat, 18-Apr 04:49 05:34 06:11 13:13 20:16 20:52 21:38 15:17
Sun, 19-Apr 04:46 05:32 06:08 13:12 20:18 20:54 21:40 15:22
Mon, 20-Apr 04:44 05:30 06:06 13:12 20:19 20:56 21:42 15:26
Tue, 21-Apr 04:41 05:27 06:04 13:12 20:21 20:58 21:44 15:30
Wed, 22-Apr 04:39 05:25 06:02 13:12 20:23 21:00 21:47 15:34
Thu, 23-Apr 04:36 05:23 06:00 13:12 20:24 21:02 21:49 15:38
Fri, 24-Apr 04:33 05:21 05:58 13:11 20:26 21:03 21:51 15:42
Sat, 25-Apr 04:31 05:19 05:56 13:11 20:28 21:05 21:53 15:46
Sun, 26-Apr 04:28 05:16 05:54 13:11 20:29 21:07 21:56 15:50
Mon, 27-Apr 04:26 05:14 05:52 13:11 20:31 21:09 21:58 15:54
Tue, 28-Apr 04:23 05:12 05:50 13:11 20:33 21:11 22:00 15:59
Wed, 29-Apr 04:21 05:10 05:48 13:11 20:34 21:13 22:03 16:03
Thu, 30-Apr 04:18 05:08 05:46 13:11 20:36 21:15 22:05 16:07
Fri, 01-May 04:15 05:05 05:44 13:10 20:38 21:17 22:07 16:11
Sat, 02-May 04:13 05:03 05:42 13:10 20:39 21:19 22:10 16:15
Sun, 03-May 04:10 05:01 05:40 13:10 20:41 21:20 22:12 16:19
Mon, 04-May 04:08 04:59 05:38 13:10 20:43 21:22 22:14 16:23
Tue, 05-May 04:05 04:57 05:37 13:10 20:44 21:24 22:17 16:27
Wed, 06-May 04:03 04:55 05:35 13:10 20:46 21:26 22:19 16:30
Thu, 07-May 04:00 04:53 05:33 13:10 20:48 21:28 22:21 16:34
Fri, 08-May 03:58 04:51 05:31 13:10 20:49 21:30 22:24 16:38
Sat, 09-May 03:55 04:49 05:30 13:10 20:51 21:32 22:26 16:42
Sun, 10-May 03:53 04:47 05:28 13:10 20:52 21:33 22:29 16:46
Mon, 11-May 03:50 04:45 05:26 13:10 20:54 21:35 22:31 16:49
Tue, 12-May 03:48 04:43 05:25 13:10 20:56 21:37 22:33 16:53
Wed, 13-May 03:45 04:42 05:23 13:10 20:57 21:39 22:36 16:57
Thu, 14-May 03:43 04:40 05:22 13:10 20:59 21:41 22:38 17:00
Fri, 15-May 03:41 04:38 05:20 13:10 21:00 21:43 22:41 17:04
Sat, 16-May 03:38 04:36 05:18 13:10 21:02 21:44 22:43 17:07
Sun, 17-May 03:36 04:35 05:17 13:10 21:03 21:46 22:45 17:11
Mon, 18-May 03:34 04:33 05:16 13:10 21:05 21:48 22:48 17:14
Tue, 19-May 03:31 04:31 05:14 13:10 21:06 21:49 22:50 17:18
Wed, 20-May 03:29 04:30 05:13 13:10 21:08 21:51 22:53 17:21
Thu, 21-May 03:27 04:28 05:12 13:10 21:09 21:53 22:55 17:24
Fri, 22-May 03:25 04:27 05:10 13:10 21:11 21:55 22:57 17:27
Sat, 23-May 03:22 04:25 05:09 13:10 21:12 21:56 23:00 17:31
Sun, 24-May 03:20 04:24 05:08 13:10 21:13 21:58 23:02 17:34
Mon, 25-May 03:18 04:22 05:07 13:10 21:15 21:59 23:04 17:37
Tue, 26-May 03:16 04:21 05:06 13:10 21:16 22:01 23:06 17:40
Wed, 27-May 03:14 04:20 05:05 13:10 21:17 22:02 23:09 17:42
Thu, 28-May 03:12 04:18 05:04 13:11 21:18 22:04 23:11 17:45
Fri, 29-May 03:10 04:17 05:03 13:11 21:20 22:05 23:13 17:48
Sat, 30-May 03:08 04:16 05:02 13:11 21:21 22:07 23:15 17:50
Sun, 31-May 03:07 04:15 05:01 13:11 21:22 22:08 23:17 17:53
Mon, 01-Jun 03:05 04:14 05:00 13:11 21:23 22:09 23:19 17:55
Tue, 02-Jun 03:03 04:13 04:59 13:11 21:24 22:11 23:21 17:57
Wed, 03-Jun 03:02 04:12 04:58 13:11 21:25 22:12 23:23 18:00
Thu, 04-Jun 03:00 04:11 04:58 13:12 21:26 22:13 23:25 18:02

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
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
Mon, 12-Jan 16:27 17:07 03:57 dawn 07:36 08:15 29 % 07:56
Tue, 13-Jan 16:29 17:08 05:09 dawn 07:36 08:15 21 % 08:44
Wed, 14-Jan 16:30 17:09 06:17 dawn 07:35 08:14 13 % 09:34
Thu, 15-Jan 16:32 17:11 07:14 dawn 07:34 08:13 8 % 10:27
Fri, 16-Jan 16:34 17:12 07:33 08:12 3 % 11:19
Sat, 17-Jan 16:35 17:14 07:33 08:11 1 %
Sun, 18-Jan 16:37 17:15 07:32 08:10 0 % 12:11
Mon, 19-Jan 16:38 17:17 07:31 08:09 1 % 13:01
Tue, 20-Jan 16:40 17:18 dusk 18:37 07:30 08:08 5 % 13:49
Wed, 21-Jan 16:42 17:20 dusk 19:56 07:29 08:07 10 % 14:34
Thu, 22-Jan 16:44 17:22 dusk 21:16 07:28 08:05 18 % 15:19
Fri, 23-Jan 16:45 17:23 dusk 22:36 07:27 08:04 27 % 16:04
Sat, 24-Jan 16:47 17:25 dusk 23:58 07:25 08:03 37 % 16:49
Sun, 25-Jan 16:49 17:26 dusk 01:24 07:24 08:02 48 % 17:38
Mon, 26-Jan 16:51 17:28 dusk 02:54 07:23 08:00 59 % 18:30
Tue, 27-Jan 16:52 17:30 dusk 04:23 07:22 07:59 70 % 19:28
Wed, 28-Jan 16:54 17:31 dusk 05:44 07:20 07:57 80 % 20:29 after dusk
Thu, 29-Jan 16:56 17:33 dusk 06:47 07:19 07:56 89 % 21:34 after dusk
Fri, 30-Jan 16:58 17:35 dusk dawn 07:18 07:54 95 % 22:38 all night
Sat, 31-Jan 17:00 17:36 dusk dawn 07:16 07:53 99 % 23:39 all night
Sun, 01-Feb 17:01 17:38 dusk dawn 07:15 07:51 100 % 00:35 all night
Mon, 02-Feb 17:03 17:40 17:54 dawn 07:13 07:50 99 % 01:26 before dawn
Tue, 03-Feb 17:05 17:41 19:18 dawn 07:12 07:48 95 % 02:13 before dawn
Wed, 04-Feb 17:07 17:43 20:38 dawn 07:10 07:46 89 % 02:57 before dawn
Thu, 05-Feb 17:09 17:45 21:55 dawn 07:09 07:45 82 % 03:39 before dawn
Fri, 06-Feb 17:11 17:47 23:10 dawn 07:07 07:43 74 % 04:22
Sat, 07-Feb 17:13 17:48 00:25 dawn 07:05 07:41 65 % 05:05
Sun, 08-Feb 17:14 17:50 01:40 dawn 07:04 07:39 55 % 05:50
Mon, 09-Feb 17:16 17:52 02:54 dawn 07:02 07:38 46 % 06:37
Tue, 10-Feb 17:18 17:54 04:04 dawn 07:00 07:36 36 % 07:26
Wed, 11-Feb 17:20 17:55 05:06 dawn 06:59 07:34 28 % 08:18
Thu, 12-Feb 17:22 17:57 05:56 dawn 06:57 07:32 20 % 09:10
Fri, 13-Feb 17:24 17:59 06:33 dawn 06:55 07:30 12 % 10:02
Sat, 14-Feb 17:26 18:01 06:53 07:28 7 % 10:53
Sun, 15-Feb 17:27 18:02 06:51 07:26 2 % 11:42
Mon, 16-Feb 17:29 18:04 06:49 07:24 0 %
Tue, 17-Feb 17:31 18:06 06:48 07:22 0 % 12:29
Wed, 18-Feb 17:33 18:08 dusk 19:00 06:46 07:20 3 % 13:15
Thu, 19-Feb 17:35 18:09 dusk 20:22 06:44 07:18 7 % 14:01
Fri, 20-Feb 17:37 18:11 dusk 21:45 06:42 07:16 14 % 14:47
Sat, 21-Feb 17:39 18:13 dusk 23:11 06:40 07:14 23 % 15:35
Sun, 22-Feb 17:40 18:15 dusk 00:40 06:38 07:12 33 % 16:27
Mon, 23-Feb 17:42 18:16 dusk 02:09 06:36 07:10 44 % 17:22
Tue, 24-Feb 17:44 18:18 dusk 03:32 06:34 07:08 56 % 18:22
Wed, 25-Feb 17:46 18:20 dusk 04:40 06:32 07:06 67 % 19:24
Thu, 26-Feb 17:48 18:22 dusk 05:30 06:29 07:03 77 % 20:27 after dusk
Fri, 27-Feb 17:49 18:23 dusk 06:03 06:27 07:01 86 % 21:27 after dusk
Sat, 28-Feb 17:51 18:25 dusk dawn 06:25 06:59 93 % 22:24 all night
Sun, 01-Mar 17:53 18:27 dusk dawn 06:23 06:57 97 % 23:15 all night
Mon, 02-Mar 17:55 18:29 dusk dawn 06:21 06:55 100 % 00:03 all night
Tue, 03-Mar 17:57 18:30 dusk dawn 06:19 06:52 100 % 00:48 all night
Wed, 04-Mar 17:58 18:32 19:32 dawn 06:17 06:50 97 % 01:32 before dawn
Thu, 05-Mar 18:00 18:34 20:48 dawn 06:14 06:48 93 % 02:14 before dawn
Fri, 06-Mar 18:02 18:36 22:04 dawn 06:12 06:46 87 % 02:57 before dawn
Sat, 07-Mar 18:04 18:37 23:20 dawn 06:10 06:44 80 % 03:42 before dawn
Sun, 08-Mar 18:05 18:39 00:35 dawn 06:08 06:41 72 % 04:29
Mon, 09-Mar 18:07 18:41 01:48 dawn 06:06 06:39 63 % 05:17
Tue, 10-Mar 18:09 18:43 02:54 dawn 06:03 06:37 54 % 06:08
Wed, 11-Mar 18:11 18:44 03:48 dawn 06:01 06:34 44 % 07:00
Thu, 12-Mar 18:13 18:46 04:30 dawn 05:59 06:32 35 % 07:52
Fri, 13-Mar 18:14 18:48 05:01 dawn 05:56 06:30 26 % 08:43
Sat, 14-Mar 18:16 18:50 05:23 dawn 05:54 06:28 18 % 09:32
Sun, 15-Mar 18:18 18:51 05:40 dawn 05:52 06:25 11 % 10:20
Mon, 16-Mar 18:19 18:53 05:50 06:23 5 % 11:07
Tue, 17-Mar 18:21 18:55 05:47 06:21 1 % 11:53
Wed, 18-Mar 18:23 18:57 05:45 06:18 0 %
Thu, 19-Mar 18:25 18:58 dusk 19:23 05:43 06:16 1 % 12:40
Fri, 20-Mar 18:26 19:00 dusk 20:50 05:40 06:14 5 % 13:29
Sat, 21-Mar 18:28 19:02 dusk 22:21 05:38 06:11 11 % 14:20
Sun, 22-Mar 18:30 19:04 dusk 23:53 05:36 06:09 20 % 15:16
Mon, 23-Mar 18:32 19:05 dusk 01:20 05:33 06:07 30 % 16:16
Tue, 24-Mar 18:33 19:07 dusk 02:34 05:31 06:05 41 % 17:18
Wed, 25-Mar 18:35 19:09 dusk 03:29 05:28 06:02 52 % 18:21
Thu, 26-Mar 18:37 19:11 dusk 04:06 05:26 06:00 63 % 19:22
Fri, 27-Mar 18:38 19:12 dusk 04:31 05:24 05:58 74 % 20:18
Sat, 28-Mar 18:40 19:14 dusk 05:49 06:21 06:55 83 % 21:11 after dusk
Sun, 29-Mar 19:42 20:16 dusk 06:02 06:19 06:53 90 % 22:58 after dusk
Mon, 30-Mar 19:44 20:18 dusk 06:13 06:17 06:51 95 % 23:43 after dusk
Tue, 31-Mar 19:45 20:19 dusk dawn 06:14 06:48 99 % 00:26 all night
Wed, 01-Apr 19:47 20:21 dusk dawn 06:12 06:46 100 % 01:09 all night
Thu, 02-Apr 19:49 20:23 20:45 dawn 06:10 06:44 99 % 01:52 before dawn
Fri, 03-Apr 19:50 20:25 22:00 dawn 06:07 06:42 96 % 02:36 before dawn
Sat, 04-Apr 19:52 20:27 23:16 dawn 06:05 06:39 92 % 03:22 before dawn
Sun, 05-Apr 19:54 20:28 00:31 dawn 06:02 06:37 86 % 04:10 before dawn
Mon, 06-Apr 19:55 20:30 01:40 dawn 06:00 06:35 79 % 05:00 before dawn
Tue, 07-Apr 19:57 20:32 02:39 dawn 05:58 06:33 71 % 05:51
Wed, 08-Apr 19:59 20:34 03:26 dawn 05:55 06:30 62 % 06:43
Thu, 09-Apr 20:01 20:36 04:00 dawn 05:53 06:28 52 % 07:33
Fri, 10-Apr 20:02 20:37 04:25 dawn 05:51 06:26 43 % 08:23
Sat, 11-Apr 20:04 20:39 04:44 dawn 05:48 06:24 33 % 09:10
Sun, 12-Apr 20:06 20:41 04:58 dawn 05:46 06:21 24 % 09:57
Mon, 13-Apr 20:07 20:43 05:11 dawn 05:44 06:19 16 % 10:42
Tue, 14-Apr 20:09 20:45 05:22 dawn 05:41 06:17 8 % 11:28
Wed, 15-Apr 20:11 20:47 05:39 06:15 3 %
Thu, 16-Apr 20:12 20:49 05:37 06:13 0 % 12:17
Fri, 17-Apr 20:14 20:50 05:34 06:11 0 % 13:08
Sat, 18-Apr 20:16 20:52 dusk 22:25 05:32 06:08 3 % 14:03
Sun, 19-Apr 20:18 20:54 dusk 23:58 05:30 06:06 9 % 15:03
Mon, 20-Apr 20:19 20:56 dusk 01:20 05:27 06:04 17 % 16:07
Tue, 21-Apr 20:21 20:58 dusk 02:24 05:25 06:02 27 % 17:12
Wed, 22-Apr 20:23 21:00 dusk 03:07 05:23 06:00 37 % 18:15
Thu, 23-Apr 20:24 21:02 dusk 03:36 05:21 05:58 48 % 19:14
Fri, 24-Apr 20:26 21:03 dusk 03:55 05:19 05:56 59 % 20:08
Sat, 25-Apr 20:28 21:05 dusk 04:10 05:16 05:54 70 % 20:57
Sun, 26-Apr 20:29 21:07 dusk 04:22 05:14 05:52 79 % 21:42 after dusk
Mon, 27-Apr 20:31 21:09 dusk 04:32 05:12 05:50 87 % 22:25 after dusk
Tue, 28-Apr 20:33 21:11 dusk 04:43 05:10 05:48 93 % 23:07 after dusk
Wed, 29-Apr 20:34 21:13 dusk 04:54 05:08 05:46 97 % 23:49 after dusk
Thu, 30-Apr 20:36 21:15 dusk dawn 05:05 05:44 99 % 00:32 all night
Fri, 01-May 20:38 21:17 dusk dawn 05:03 05:42 100 % 01:17 all night
Sat, 02-May 20:39 21:19 22:15 dawn 05:01 05:40 98 % 02:04 before dawn
Sun, 03-May 20:41 21:20 23:27 dawn 04:59 05:38 95 % 02:54 before dawn
Mon, 04-May 20:43 21:22 00:30 dawn 04:57 05:37 91 % 03:45 before dawn
Tue, 05-May 20:44 21:24 01:21 dawn 04:55 05:35 84 % 04:36 before dawn
Wed, 06-May 20:46 21:26 01:59 dawn 04:53 05:33 77 % 05:27 before dawn
Thu, 07-May 20:48 21:28 02:27 dawn 04:51 05:31 69 % 06:16
Fri, 08-May 20:49 21:30 02:47 dawn 04:49 05:30 59 % 07:03
Sat, 09-May 20:51 21:32 03:03 dawn 04:47 05:28 49 % 07:49
Sun, 10-May 20:52 21:33 03:16 dawn 04:45 05:26 39 % 08:33
Mon, 11-May 20:54 21:35 03:28 dawn 04:43 05:25 29 % 09:18
Tue, 12-May 20:56 21:37 03:39 dawn 04:42 05:23 20 % 10:04
Wed, 13-May 20:57 21:39 03:52 dawn 04:40 05:22 12 % 10:53
Thu, 14-May 20:59 21:41 04:07 dawn 04:38 05:20 5 % 11:46
Fri, 15-May 21:00 21:43 04:36 05:18 1 %
Sat, 16-May 21:02 21:44 04:35 05:17 0 % 12:44
Sun, 17-May 21:03 21:46 dusk 22:54 04:33 05:16 2 % 13:48
Mon, 18-May 21:05 21:48 dusk 00:09 04:31 05:14 7 % 14:54
Tue, 19-May 21:06 21:49 dusk 01:02 04:30 05:13 14 % 16:01
Wed, 20-May 21:08 21:51 dusk 01:37 04:28 05:12 23 % 17:04
Thu, 21-May 21:09 21:53 dusk 02:00 04:27 05:10 34 % 18:02
Fri, 22-May 21:11 21:55 dusk 02:17 04:25 05:09 45 % 18:53
Sat, 23-May 21:12 21:56 dusk 02:29 04:24 05:08 55 % 19:40
Sun, 24-May 21:13 21:58 dusk 02:41 04:22 05:07 66 % 20:24
Mon, 25-May 21:15 21:59 dusk 02:51 04:21 05:06 75 % 21:07
Tue, 26-May 21:16 22:01 dusk 03:02 04:20 05:05 83 % 21:48 after dusk
Wed, 27-May 21:17 22:02 dusk 03:15 04:18 05:04 90 % 22:31 after dusk
Thu, 28-May 21:18 22:04 dusk 03:30 04:17 05:03 95 % 23:15 after dusk
Fri, 29-May 21:20 22:05 dusk 03:50 04:16 05:02 98 % 00:01 after dusk
Sat, 30-May 21:21 22:07 dusk dawn 04:15 05:01 100 % 00:50 all night
Sun, 31-May 21:22 22:08 22:21 dawn 04:14 05:00 100 % 01:40 before dawn
Mon, 01-Jun 21:23 22:09 23:16 dawn 04:13 04:59 98 % 02:32 before dawn
Tue, 02-Jun 21:24 22:11 23:59 dawn 04:12 04:58 94 % 03:23 before dawn
Wed, 03-Jun 21:25 22:12 00:29 dawn 04:11 04:58 89 % 04:12 before dawn
Thu, 04-Jun 21:26 22:13 00:52 dawn 04:10 04:57 82 % 04:59 before dawn

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.