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Storey Arms to Libanus or Circular via Ystradfellte Walk

Strenuous route in the Fforest Fawr: 4 peaks, upland moor, limestone plateaus, and a glorious descent into the Usk Valley. Stretches of pathless terrain

Brecon Beacons Circular Long Tough

Hiking weather forecast

Brecon Beacons hourly weather (Visual Crossing)

Sunset: 16:27. Dusk: 17:07. Dark: 17:49. Moon 29% (03:57 to dawn)

Updated: Mon, 12-Jan at 17:39

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 0% 0% 100% 0% 100% 100% 100% 100% 100% 100% 100% 0% 94% 23% 23% 23%
Tue, 13 Jan 16% 84% 84% 84% 84% 84% 84% 42% 42% 42% 42% 42% 42% 3% 3% 3%
Wed, 14 Jan 3% 0% 0% 0% 0% 0% 0% 13% 13% 13% 13% 13% 13% 68% 68% 68%
Thu, 15 Jan 61% 55% 55% 55% 55% 55% 55% 55% 55% 55% 55% 55% 55% 45% 45% 45%
Fri, 16 Jan 19% 13% 13% 13% 13% 13% 13% 45% 45% 45% 45% 45% 45% 16% 16% 16%
Sat, 17 Jan 🌫 13% 10% 10% 10% 10% 10% 10% 23% 23% 23% 23% 23% 🌫 23% 19% 19% 19%
Sun, 18 Jan 3% 7% 7% 🌫 7% 7% 7% 7% 23% 23% 23% 23% 23% 🌫 23% 32% 32% 32%
Mon, 19 Jan 29% 36% 36% 🌫 36% 🌫 36% 36% 36% 42% 42% 42% 42% 42% 🌫 42% 26% 26% 26%
Tue, 20 Jan 16% 16% 16% 16% 16% 16% 16% 26% 26% 26% 26% 26% 26% 23% 23% 23%
Wed, 21 Jan 🌫 10% 🌫 16% 🌫 16% 🌫 16% 🌫 16% 🌫 16% 🌫 16% 23% 23% 23% 23% 23% 23% 16% 16% 16%
Thu, 22 Jan 19% 26% 26% 🌫 26% 🌫 26% 🌫 26% 🌫 26% 19% 19% 19% 19% 19% 🌫 19% 🌫 32% 32% 32%
Fri, 23 Jan 29% 23% 23% 23% 23% 🌫 23% 🌫 23% 19% 19% 19% 19% 19% 19% 23% 23% 23%
Sat, 24 Jan 16% 13% 13% 13% 13% 13% 13% 10% 10% 10% 10% 10% 10% 36% 36% 36%
Sun, 25 Jan 39% 42% 42% 42% 42% 42% 42% 45% 45% 45% 45% 45% 45% 36% 36% 36%
Mon, 26 Jan 16% 16% 16% 16% 16% 16% 🌫 16% 🌫 39% 🌫 39% 🌫 39% 🌫 39% 🌫 39% 🌫 39% 42% 42% 42%

Percentages are the chance of rain.

Weather data by Visual Crossing

Brecon Beacons hourly weather (Open Meteo)

Sunset: 16:27. Dusk: 17:07. Dark: 17:49. Moon 29% (03:57 to dawn)

Updated: Mon, 12-Jan at 17:36

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 26% 0% 🌫 0% 0% 0%
Tue, 13 Jan 🌫 16% 🌫 34% 🌫 57% 75% 82% 84% 84% 83% 80% 75% 69% 62% 53% 42% 30% 20%
Wed, 14 Jan 2% 2% 2% 2% 1% 0% 0% 4% 10% 20% 36% 57% 73% 84% 90% 92%
Thu, 15 Jan 20% 22% 27% 33% 41% 51% 59% 64% 68% 69% 67% 63% 59% 55% 51% 47%
Fri, 16 Jan 24% 28% 34% 37% 33% 26% 24% 31% 42% 49% 47% 41% 35% 30% 26% 22%
Sat, 17 Jan 6% 6% 6% 6% 7% 10% 12% 15% 19% 20% 17% 11% 8% 11% 16% 21%
Sun, 18 Jan 29% 33% 37% 42% 47% 51% 55% 57% 58% 59% 59% 59% 59% 59% 60% 60%
Mon, 19 Jan 43% 42% 41% 40% 39% 39% 39% 40% 42% 43% 44% 45% 45% 44% 41% 39%
Tue, 20 Jan 27% 26% 26% 25% 25% 24% 25% 27% 29% 32% 35% 37% 39% 40% 40% 40%
Wed, 21 Jan 41% 41% 41% 40% 39% 38% 37% 36% 34% 33% 32% 30% 29% 29% 29% 29%
Thu, 22 Jan 29% 29% 28% 28% 27% 27% 27% 28% 29% 31% 32% 34% 35% 36% 36% 36%
Fri, 23 Jan 39% 38% 36% 35% 33% 32% 31% 32% 34% 36% 38% 40% 41% 40% 39% 37%
Sat, 24 Jan 41% 42% 43% 43% 43% 43% 43% 43% 43% 43% 43% 42% 41% 39% 37% 35%
Sun, 25 Jan 27% 27% 27% 28% 29% 30% 31% 33% 36% 39% 42% 44% 45% 44% 42% 39%
Mon, 26 Jan 27% 26% 24% 23% 22% 21% 19% 20% 22% 26% 30% 33% 35% 34% 32% 30%
Tue, 27 Jan 29% 27% 25% 22% 20% 17% 16% 16% 18% 19% 21% 22% 23% 22% 21% 19%

Percentages are the chance of rain.

Weather data by Open-Meteo

Brecon Beacons hourly weather (Met Office)

Sunset: 16:27. Dusk: 17:07. Dark: 17:49. Moon 29% (03:57 to dawn)

Updated: Mon, 12-Jan at 17:00

06 09 12 15 18 21
Today 9% 5%
Tue, 13 Jan 10% 🌫 24% 87% 60% 27% 5%
Wed, 14 Jan 1% 4% 6% 7% 12% 62%
Thu, 15 Jan 24% 22% 60% 63% 81% 78%
Fri, 16 Jan 37% 50% 56% 19% 48% 20%
Sat, 17 Jan 🌫 25% 51% 18% 16% 51% 51%
Sun, 18 Jan 13% 17% 55% 57% 25% 54%
Mon, 19 Jan 57% 53% 56% 20%

Percentages are the chance of rain.

Weather data by Met Office

29% (03:57 to dawn)

Updated: Wed, 07-Jan at 17:00

Wales

Day 3-5 :

UK Day 6-7 and week 2

UK Week 3 and 4

Weather data by Met Office

Brecon Beacons mountain weather forecast (Met Office)

Sunset: 16:27. Dusk: 17:07. Dark: 17:49. Moon 29% (03:57 to dawn)

Updated: Tue, 06-Jan at 04:05

Specialist mountain forecast: MWIS

Today
Tue, 06-Jan

Outbreaks of sleet and snow, turning to rain in valleys later. Cold. Becoming windy.

Clear or bright intervals and occasional snow showers. Snow will turn more persistent and heavier during the evening, turning to rain below 400m as freezing level rises. Severe conditions continuing on higher slopes with blizzard conditions later.

Low risk Blizzards Heavy Persistent Snow Gales
Low risk Blizzards Heavy Persistent Snow Gales
Low risk Blizzards Heavy Persistent Snow Gales
Medium risk Poor Visibility
High risk Severe Chill Effect
Chance of Cloud free tops 40%, becoming 10% in evening.
Ground conditions Please see - https://yrwyddfa.live/
Visibility Occasional cloud above 400 or 500m, perhaps lifting and breaking a little during the morning, before becoming extensive again during the late afternoon and evening. Blizzard conditions later on the tops.
Confidence High for cold conditions continuing with outbreaks of rain, sleet and snow spreading east on Tuesday then drier and brighter on Wednesday. Low confidence for later in the week for the track of a low pressure area and weather fronts moving east over the United Kingdom.
View Becoming a little milder in the valleys later but there will continue to be serious and difficult conditions on higher slopes with strong winds, snow and very poor visibility. Severe wind chill at all heights.

Conditions on the tops at 900m

Time Weather Rain Temp Wind Freezing
06:00 Light snow 30% -2 23 500m
09:00 Light snow 30% -2 24 600m
12:00 Heavy snow 30% -2 30 600m
15:00 Heavy snow 60% -1 34 700m
18:00 Heavy snow 80% -1 32 900m
21:00 Heavy snow 80% -1 33 800m
Wed, 07-Jan

Sleet or snow, with rain below 400m, clearing overnight. Mainly cloudy at first with a few snow showers then brightening up but remaining very cold. Strong northerly winds and a severe wind chill.

Ice 500m falling to 200m.
Visibility Areas of cloud above 500 or 600m, becoming patchy in the morning. Otherwise good visibility, locally poor in any wintry showers.
Wind North or Northwest 30 to 40mph gusts 55mph overnight then 25mph gusts 35mph during the day.
Temp (tops) Minus 3C. at 800m
Thu, 08-Jan

A severe frost overnight then a cold, cloudy and mostly dry morning. Winds strengthening through the afternoon then some heavy sleet and snow spreading east later with severe gales and blizzard conditions developing.

Fri, 09-Jan

Very unsettled and windy conditions are likely. Spells of rain, sleet and snow with a chance of blizzard conditions on the tops.

Sat, 10-Jan

Possibly a window of more settled conditions before another band rain, sleet and snow spreads eastwards later.

Weather data by Met Office

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Brecon Beacons Air Quality (Pollen and UV)

Updated: Mon, 12-Jan at 17:37

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   air q   air q   air q   air q   air q   air q  
Tue, 13 Jan 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  
Wed, 14 Jan 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  
Thu, 15 Jan 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 UV 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: Mon, 12-Jan at 17:36

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 1km 1km 1km 1km 3km
Tue, 13 Jan 0km 0km 0km 0km 0km 0km 0km 1km 0km 0km 2km 2km 2km 3km 3km 7km
Wed, 14 Jan 50km 11km 14km 9km 9km 11km 50km 11km 50km 50km 50km 10km 9km 1km 0km 1km
Thu, 15 Jan 1km 2km 1km 1km 1km 1km 1km 3km 2km 3km 3km 2km 2km 2km 2km 2km
Fri, 16 Jan 15km 20km 26km 31km 27km 22km 17km 22km 27km 32km 29km 26km 23km 15km 8km 1km

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

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
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
Fri, 05-Jun 21:27 22:14 01:09 dawn 04:09 04:56 74 % 05:45
Sat, 06-Jun 21:28 22:15 01:22 dawn 04:09 04:56 65 % 06:29
Sun, 07-Jun 21:29 22:16 01:34 dawn 04:08 04:55 55 % 07:12
Mon, 08-Jun 21:30 22:17 01:45 dawn 04:07 04:55 44 % 07:56
Tue, 09-Jun 21:31 22:18 01:57 dawn 04:07 04:55 34 % 08:42
Wed, 10-Jun 21:31 22:19 02:10 dawn 04:06 04:54 24 % 09:31
Thu, 11-Jun 21:32 22:20 02:28 dawn 04:06 04:54 15 % 10:25
Fri, 12-Jun 21:33 22:21 02:52 dawn 04:06 04:54 7 % 11:26
Sat, 13-Jun 21:33 22:22 04:05 04:54 2 %
Sun, 14-Jun 21:34 22:22 04:05 04:53 0 % 12:31
Mon, 15-Jun 21:34 22:23 dusk 22:49 04:05 04:53 1 % 13:39
Tue, 16-Jun 21:35 22:23 dusk 23:33 04:05 04:53 5 % 14:46
Wed, 17-Jun 21:35 22:24 dusk 00:01 04:05 04:53 12 % 15:48
Thu, 18-Jun 21:36 22:24 dusk 00:21 04:05 04:53 20 % 16:44
Fri, 19-Jun 21:36 22:25 dusk 00:36 04:05 04:54 30 % 17:34
Sat, 20-Jun 21:36 22:25 dusk 00:48 04:05 04:54 40 % 18:21
Sun, 21-Jun 21:36 22:25 dusk 00:59 04:05 04:54 51 % 19:04
Mon, 22-Jun 21:37 22:25 dusk 01:09 04:06 04:54 61 % 19:47
Tue, 23-Jun 21:37 22:25 dusk 01:22 04:06 04:55 70 % 20:29
Wed, 24-Jun 21:37 22:25 dusk 01:36 04:06 04:55 79 % 21:13 after dusk
Thu, 25-Jun 21:37 22:25 dusk 01:55 04:07 04:55 86 % 21:58 after dusk
Fri, 26-Jun 21:37 22:25 dusk 02:20 04:07 04:56 92 % 22:46 after dusk
Sat, 27-Jun 21:37 22:25 dusk 02:55 04:08 04:56 96 % 23:36 after dusk
Sun, 28-Jun 21:37 22:25 dusk 03:43 04:09 04:57 99 % 00:27 after dusk
Mon, 29-Jun 21:36 22:24 dusk dawn 04:09 04:58 100 % 01:19 all night
Tue, 30-Jun 21:36 22:24 22:32 dawn 04:10 04:58 99 % 02:09 before dawn
Wed, 01-Jul 21:36 22:24 22:57 dawn 04:11 04:59 96 % 02:57 before dawn
Thu, 02-Jul 21:35 22:23 23:15 dawn 04:12 05:00 92 % 03:43 before dawn
Fri, 03-Jul 21:35 22:23 23:30 dawn 04:13 05:01 86 % 04:27 before dawn
Sat, 04-Jul 21:35 22:22 23:42 dawn 04:14 05:01 78 % 05:10 before dawn
Sun, 05-Jul 21:34 22:21 23:52 dawn 04:15 05:02 69 % 05:53
Mon, 06-Jul 21:33 22:21 00:03 dawn 04:16 05:03 59 % 06:37
Tue, 07-Jul 21:33 22:20 00:16 dawn 04:17 05:04 49 % 07:23
Wed, 08-Jul 21:32 22:19 00:31 dawn 04:18 05:05 38 % 08:14
Thu, 09-Jul 21:31 22:18 00:51 dawn 04:20 05:06 27 % 09:09
Fri, 10-Jul 21:31 22:17 01:21 dawn 04:21 05:07 17 % 10:11

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.