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Black Mountain (Fan Brycheiniog and Fan Foel) from Glyntawe walk

A strenuous start then easy route finding along a glacial ridge through wild upland scenery to one of the highest peaks in the Brecon Beacons National Park with spectacular views.

Brecon Beacons Marilyn Mountain

Hiking weather forecast

Brecon Beacons hourly weather (Visual Crossing)

Sunset: 20:47. Dusk: 21:27. Moon: below horizon.

Updated: 20:31 on Mon, 06-May

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 0% 29%
Tue, 07-May 0% 0% 16% 16% 16% 16% 16% 16% 81% 81% 81% 81% 81% 81% 3% 3%
Wed, 08-May 0% 0% 10% 10% 10% 10% 10% 10% 19% 19% 19% 19% 19% 19% 0% 0%
Thu, 09-May 0% 0% 0% 0% 0% 0% 0% 0% 10% 10% 10% 10% 10% 10% 0% 0%
Fri, 10-May 0% 0% 0% 0% 0% 0% 0% 0% 26% 26% 26% 26% 26% 26% 3% 3%
Sat, 11-May 0% 0% 0% 0% 0% 0% 0% 0% 23% 23% 23% 23% 23% 23% 3% 3%
Sun, 12-May 0% 0% 13% 13% 13% 13% 13% 13% 48% 48% 48% 48% 48% 48% 23% 23%
Mon, 13-May 13% 13% 61% 61% 61% 61% 61% 61% 68% 68% 68% 68% 68% 68% 36% 36%
Tue, 14-May 29% 29% 48% 48% 48% 48% 48% 48% 58% 58% 58% 58% 58% 58% 29% 29%
Wed, 15-May 19% 19% 52% 52% 52% 52% 52% 52% 61% 61% 61% 61% 61% 61% 29% 29%
Thu, 16-May 36% 36% 52% 52% 52% 52% 52% 52% 71% 71% 71% 71% 71% 71% 23% 23%
Fri, 17-May 16% 16% 52% 52% 52% 52% 52% 52% 61% 61% 61% 61% 61% 61% 23% 23%
Sat, 18-May 16% 16% 26% 26% 26% 26% 26% 26% 32% 32% 32% 32% 32% 32% 26% 26%
Sun, 19-May 23% 23% 29% 29% 29% 29% 29% 29% 55% 55% 55% 55% 55% 55% 16% 16%
Mon, 20-May 10% 10% 26% 26% 26% 26% 26% 26% 61% 61% 61% 61% 61% 61% 26% 26%

Powered by Visual Crossing Weather

Brecon Beacons hourly weather (Open Meteo)

Sunset: 20:47. Dusk: 21:27. Moon: below horizon.

Updated: 20:32 on Mon, 06-May

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 94% 73%
Tue, 07-May 0% 0% 0% 0% 0% 0% 10% 19% 29% 39% 48% 58% 57% 56% 55% 40%
Wed, 08-May 0% 0% 0% 0% 0% 0% 10% 19% 29% 30% 31% 32% 22% 13% 3% 2%
Thu, 09-May 0% 0% 0% 0% 0% 0% 0% 0% 0% 1% 2% 3% 2% 1% 0% 0%
Fri, 10-May 0% 0% 0% 0% 0% 0% 4% 9% 13% 18% 24% 29% 27% 25% 23% 17%
Sat, 11-May 0% 0% 0% 0% 0% 0% 3% 7% 10% 16% 23% 29% 31% 33% 35% 29%
Sun, 12-May 0% 0% 0% 2% 4% 6% 14% 21% 29% 37% 44% 52% 53% 54% 55% 46%
Mon, 13-May 5% 8% 10% 16% 23% 29% 41% 53% 65% 68% 71% 74% 67% 59% 52% 45%
Tue, 14-May

Weather data by Open-Meteo.com

Brecon Beacons hourly weather (Met Office)

Sunset: 20:47. Dusk: 21:27. Moon: below horizon.

Updated: 18:00 on Mon, 06-May

06 09 12 15 18 21
Today 9% 12%
Tue, 07-May 🌫 19% 🌫 19% 6% 4% 10% 9%
Wed, 08-May 🌫 12% 4% 4% 5% 4% 3%
Thu, 09-May 5% 4% 4% 4% 4% 4%
Fri, 10-May 4% 5% 4% 5% 2% 1%
Sat, 11-May 1% 2% 1% 4% 1% 5%
Sun, 12-May 8% 9% 9% 10% 12% 15%
Mon, 13-May 12% 48% 39% 37% 35%

Powered by Met Office data.

Brecon Beacons weather (Met Office)

Updated: 13:33 on Mon, 06-May

Turning drier overnight with some mist and fog patches.

This Evening and Tonight:

  • Showers generally easing this evening leaving a largely dry night with some clear spells.
  • Rather mild, though chillier under prolonged clear spells with some mist and fog developing.
  • Minimum Temperature 7C.

Tuesday:

  • A mostly dry start with sunny spells developing through the day.
  • A few showers possible in the afternoon though less heavy than on Monday.
  • Feeling pleasant in the sunshine.
  • Maximum Temperature 19C.

Wednesday to Friday:

  • High pressure dominates the weather this week bringing settled conditions and lots of dry weather.
  • Plenty of warm sunshine and light winds.
  • Mild overnight with some fog possible.

UK Day 6-7 and week 2

  • The coming weekend will probably remain fine for many, with some spells of sunshine for most and it will continue to feel warm, especially in parts of the south and east where temperatures are likely to remain in the mid-20's.
  • Some areas of cloud are likely, especially around some coasts and perhaps later in northwest Scotland, with an increasing risk of a few showers here too.
  • Following this spell of pleasant May weather though, it's all change the following week with conditions likely to turn more changeable across the country, with rainfall likely to be above average in most areas.
  • Some of the rain is likely to be heavy and a few thunderstorms are also likely.
  • Temperatures will return back closer to normal for May.

UK Week 3 and 4

  • For the end of May and the start of June, it will probably start off fairly unsettled with rain or showers for many, but also some sunny spells between them, and slightly-above average temperatures.
  • Through the period there are some signs that conditions could become a little more settled in the south and east, with most of the rain reserved for the north and west.
  • With a strong sun at this time of year, it will feel warm in any sunshine.

Powered by Met Office data.

Brecon Beacons mountain weather forecast (Met Office)

Sunset: 20:47. Dusk: 21:27. Moon: below horizon.

Updated: 17:29 on Mon, 06-May

Evening

Showers fading this evening with clear spells into the night.

Tomorow
Tue, 07-May

Murky start, with brighter spells into the afternoon and the odd shower.

A murky start with mist and fog, especially in the valleys, but brightening up through the morning with plenty of warm, sunny spells in the afternoon. The odd shower possible by the afternoon, though any showers isolated and light; fewer showers expected compared to Monday. These easing into the evening leaving a dry end to the day.

Chance of Cloud free tops 40% rising to 90% by mid-morning.
Visibility Fog through the morning in the valleys with low cloud around 400-500 m during the early morning, with cloud lifting above summits. Poor to very poor visibility at first other, otherwise excellent visibility is expected across scenic outlooks of the park by mid-morning with a risk of showers temporarily reducing visibility.
Confidence High confidence for turning more settled through the week, though lower confidence for cloud amounts and any showers.
View Poor visibilities at first requiring good navigational skills but otherwise improving with moderate UV levels by the afternoon with sunscreen advised.
Medium risk Poor Visibility Strong Sunlight

Conditions on the tops

Time Weather Rain Temp Wind Freezing
00:00 Fog 10% 8 8 2100m
03:00 Fog 10% 8 6 2100m
06:00 Cloudy 10% 8 7 2100m
09:00 Cloudy 10% 10 5 2100m
12:00 Sunny intervals 30% 13 5 2200m
15:00 Light rain showers 60% 14 4 2200m
18:00 Partly cloudy (night) 20% 13 5 2300m
21:00 Partly cloudy (night) 20% 11 5 2300m
Wed, 08-May

Mist and fog in the valleys first thing. This soon lifting and breaking by mid-morning to give a dry day with periods of hazy sunshine due to medium or high level cloud. Feeling warm in the sunshine and remaining dry into the evening and overnight.

Ice Above summits.
Visibility Patches of low cloud, mist and fog at first. Mostly very good visibility, away from any low cloud during the early morning.
Wind Southwesterly 10-15 mph.
Temp Plus 8 Celsius rising to plus 14 Celsius. (at high level)
Thu, 09-May

Another dry and sunny day with some valley mist or fog possible during the early hours. Feeling warm in the sunshine and light winds.

Fri, 10-May

Similar to Thursday. Dry with plenty of warm sunshine after some early morning mist and fog in the valleys. Light winds.

Sat, 11-May

Remaining settled with plenty of sunshine once mist and fog clears. Light southerly winds.

Powered by Met Office data.

Brecon Beacons daylight

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

Day length is dusk to dawn. Times will vary a little if there is a hill on the horizon.

It should still be light enough to read at dawn and dusk, so there will be enough light for walking even earlier (later).

Brecon Beacons moonlight

Night of Sunset Dusk Moon Rise Moon Set Dawn Sunrise Phase % Full Max. Ht. Night Walk
Mon, 06-May 20:47 21:27 04:53 05:33 2 %
Tue, 07-May 20:49 21:29 04:51 05:31 0 %
Wed, 08-May 20:51 21:31 dusk 21:59 04:49 05:29 1 %
Thu, 09-May 20:52 21:33 dusk 23:26 04:47 05:28 4 % 14:26
Fri, 10-May 20:54 21:35 dusk 00:41 04:45 05:26 10 % 15:26
Sat, 11-May 20:55 21:37 dusk 01:36 04:43 05:24 17 % 16:25
Sun, 12-May 20:57 21:38 dusk 02:15 04:41 05:23 26 % 17:22
Mon, 13-May 20:58 21:40 dusk 02:41 04:39 05:21 35 % 18:14
Tue, 14-May 21:00 21:42 dusk 02:59 04:38 05:20 45 % 19:02
Wed, 15-May 21:01 21:44 dusk 03:12 04:36 05:18 55 % 19:46
Thu, 16-May 21:03 21:46 dusk 03:23 04:34 05:17 64 % 20:28
Fri, 17-May 21:05 21:47 dusk 03:32 04:33 05:15 73 % 21:07
Sat, 18-May 21:06 21:49 dusk 03:41 04:31 05:14 81 % 21:46 after dusk
Sun, 19-May 21:07 21:51 dusk 03:51 04:29 05:13 88 % 22:25 after dusk
Mon, 20-May 21:09 21:52 dusk 04:02 04:28 05:11 93 % 23:06 after dusk
Tue, 21-May 21:10 21:54 dusk 04:16 04:26 05:10 97 % 23:50 after dusk
Wed, 22-May 21:12 21:56 dusk dawn 04:25 05:09 100 % 00:38 all night
Thu, 23-May 21:13 21:57 dusk dawn 04:23 05:08 100 % 01:30 all night
Fri, 24-May 21:14 21:59 23:08 dawn 04:22 05:07 98 % 02:26 before dawn
Sat, 25-May 21:16 22:01 00:12 dawn 04:21 05:06 94 % 03:24 before dawn
Sun, 26-May 21:17 22:02 01:01 dawn 04:19 05:05 87 % 04:23 before dawn
Mon, 27-May 21:18 22:04 01:35 dawn 04:18 05:04 79 % 05:21 before dawn
Tue, 28-May 21:19 22:05 01:58 dawn 04:17 05:03 69 % 06:15
Wed, 29-May 21:21 22:06 02:15 dawn 04:16 05:02 59 % 07:07
Thu, 30-May 21:22 22:08 02:29 dawn 04:15 05:01 47 % 07:56
Fri, 31-May 21:23 22:09 02:41 dawn 04:14 05:00 36 % 08:44
Sat, 01-Jun 21:24 22:11 02:53 dawn 04:13 04:59 25 % 09:32
Sun, 02-Jun 21:25 22:12 03:06 dawn 04:12 04:59 16 % 10:22
Mon, 03-Jun 21:26 22:13 03:22 dawn 04:11 04:58 8 %
Tue, 04-Jun 21:27 22:14 03:43 dawn 04:10 04:57 3 %
Wed, 05-Jun 21:28 22:15 04:09 04:57 0 %
Thu, 06-Jun 21:29 22:16 dusk 22:19 04:09 04:56 0 %
Fri, 07-Jun 21:30 22:17 dusk 23:24 04:08 04:56 2 % 14:09
Sat, 08-Jun 21:31 22:18 dusk 00:10 04:08 04:55 7 % 15:08
Sun, 09-Jun 21:31 22:19 dusk 00:41 04:07 04:55 13 % 16:03
Mon, 10-Jun 21:32 22:20 dusk 01:02 04:07 04:55 21 % 16:54
Tue, 11-Jun 21:33 22:21 dusk 01:18 04:06 04:54 29 % 17:40
Wed, 12-Jun 21:33 22:22 dusk 01:30 04:06 04:54 38 % 18:23
Thu, 13-Jun 21:34 22:22 dusk 01:40 04:06 04:54 48 % 19:03
Fri, 14-Jun 21:35 22:23 dusk 01:49 04:05 04:54 57 % 19:42
Sat, 15-Jun 21:35 22:24 dusk 01:58 04:05 04:54 66 % 20:21
Sun, 16-Jun 21:36 22:24 dusk 02:08 04:05 04:54 75 % 21:01 after dusk
Mon, 17-Jun 21:36 22:25 dusk 02:21 04:05 04:54 83 % 21:44 after dusk
Tue, 18-Jun 21:36 22:25 dusk 02:37 04:05 04:54 90 % 22:30 after dusk
Wed, 19-Jun 21:37 22:25 dusk 03:01 04:06 04:54 95 % 23:20 after dusk
Thu, 20-Jun 21:37 22:25 dusk 03:35 04:06 04:54 99 % 00:15 after dusk
Fri, 21-Jun 21:37 22:26 dusk dawn 04:06 04:55 100 % 01:14 all night
Sat, 22-Jun 21:37 22:26 22:56 dawn 04:06 04:55 99 % 02:14 before dawn
Sun, 23-Jun 21:37 22:26 23:36 dawn 04:07 04:55 95 % 03:14 before dawn
Mon, 24-Jun 21:37 22:26 00:02 dawn 04:07 04:56 90 % 04:10 before dawn
Tue, 25-Jun 21:37 22:26 00:22 dawn 04:08 04:56 81 % 05:03 before dawn
Wed, 26-Jun 21:37 22:26 00:36 dawn 04:08 04:57 72 % 05:53
Thu, 27-Jun 21:37 22:25 00:49 dawn 04:09 04:57 61 % 06:42
Fri, 28-Jun 21:37 22:25 01:01 dawn 04:10 04:58 49 % 07:29
Sat, 29-Jun 21:37 22:25 01:13 dawn 04:10 04:58 38 % 08:18
Sun, 30-Jun 21:36 22:24 01:27 dawn 04:11 04:59 27 % 09:08
Mon, 01-Jul 21:36 22:24 01:46 dawn 04:12 05:00 18 % 10:02
Tue, 02-Jul 21:36 22:23 02:12 dawn 04:13 05:01 10 %
Wed, 03-Jul 21:35 22:23 02:49 dawn 04:14 05:01 5 %
Thu, 04-Jul 21:35 22:22 03:41 dawn 04:15 05:02 1 %
Fri, 05-Jul 21:34 22:21 04:16 05:03 0 %
Sat, 06-Jul 21:34 22:21 dusk 22:40 04:17 05:04 1 % 13:52
Sun, 07-Jul 21:33 22:20 dusk 23:05 04:18 05:05 4 % 14:45
Mon, 08-Jul 21:32 22:19 dusk 23:23 04:20 05:06 9 % 15:33
Tue, 09-Jul 21:31 22:18 dusk 23:36 04:21 05:07 16 % 16:18
Wed, 10-Jul 21:31 22:17 dusk 23:46 04:22 05:08 23 % 16:59
Thu, 11-Jul 21:30 22:16 dusk 23:56 04:23 05:09 32 % 17:38
Fri, 12-Jul 21:29 22:15 dusk 00:05 04:25 05:11 41 % 18:17
Sat, 13-Jul 21:28 22:14 dusk 00:14 04:26 05:12 50 % 18:56
Sun, 14-Jul 21:27 22:12 dusk 00:26 04:28 05:13 60 % 19:37
Mon, 15-Jul 21:26 22:11 dusk 00:40 04:29 05:14 69 % 20:21
Tue, 16-Jul 21:25 22:10 dusk 01:00 04:31 05:15 78 % 21:09 after dusk
Wed, 17-Jul 21:24 22:08 dusk 01:29 04:32 05:17 86 % 22:02 after dusk
Thu, 18-Jul 21:23 22:07 dusk 02:12 04:34 05:18 92 % 22:59 after dusk
Fri, 19-Jul 21:21 22:06 dusk 03:15 04:35 05:19 97 % 23:59 after dusk
Sat, 20-Jul 21:20 22:04 dusk 04:35 04:37 05:21 100 % 01:00 after dusk
Sun, 21-Jul 21:19 22:03 22:04 dawn 04:38 05:22 100 % 01:59 before dawn
Mon, 22-Jul 21:18 22:01 22:26 dawn 04:40 05:23 97 % 02:55 before dawn
Tue, 23-Jul 21:16 21:59 22:43 dawn 04:42 05:25 91 % 03:48 before dawn
Wed, 24-Jul 21:15 21:58 22:56 dawn 04:43 05:26 83 % 04:38 before dawn
Thu, 25-Jul 21:13 21:56 23:08 dawn 04:45 05:28 74 % 05:26
Fri, 26-Jul 21:12 21:54 23:20 dawn 04:47 05:29 63 % 06:15
Sat, 27-Jul 21:10 21:53 23:34 dawn 04:49 05:31 52 % 07:05
Sun, 28-Jul 21:09 21:51 23:51 dawn 04:50 05:32 41 % 07:58
Mon, 29-Jul 21:07 21:49 00:14 dawn 04:52 05:34 30 % 08:53
Tue, 30-Jul 21:06 21:47 00:47 dawn 04:54 05:35 21 % 09:50
Wed, 31-Jul 21:04 21:45 01:33 dawn 04:56 05:37 13 %
Thu, 01-Aug 21:02 21:43 02:35 dawn 04:57 05:38 6 %
Fri, 02-Aug 21:01 21:41 03:48 dawn 04:59 05:40 2 %
Sat, 03-Aug 20:59 21:39 05:01 05:41 0 %
Sun, 04-Aug 20:57 21:37 05:03 05:43 0 %
Mon, 05-Aug 20:56 21:35 dusk 21:43 05:05 05:44 2 % 14:13
Tue, 06-Aug 20:54 21:33 dusk 21:54 05:06 05:46 6 % 14:55
Wed, 07-Aug 20:52 21:31 dusk 22:03 05:08 05:48 11 % 15:35
Thu, 08-Aug 20:50 21:29 dusk 22:12 05:10 05:49 18 % 16:14
Fri, 09-Aug 20:48 21:27 dusk 22:21 05:12 05:51 25 % 16:53
Sat, 10-Aug 20:46 21:25 dusk 22:32 05:14 05:52 34 % 17:33
Sun, 11-Aug 20:44 21:23 dusk 22:44 05:15 05:54 43 % 18:15
Mon, 12-Aug 20:42 21:21 dusk 23:01 05:17 05:56 53 % 19:01
Tue, 13-Aug 20:40 21:18 dusk 23:25 05:19 05:57 63 % 19:50
Wed, 14-Aug 20:38 21:16 dusk 00:00 05:21 05:59 73 % 20:44
Thu, 15-Aug 20:36 21:14 dusk 00:53 05:23 06:00 82 % 21:42 after dusk
Fri, 16-Aug 20:34 21:12 dusk 02:05 05:25 06:02 89 % 22:42 after dusk
Sat, 17-Aug 20:32 21:10 dusk 03:31 05:26 06:04 95 % 23:42 after dusk
Sun, 18-Aug 20:30 21:07 dusk 05:05 05:28 06:05 99 % 00:40 after dusk
Mon, 19-Aug 20:28 21:05 dusk dawn 05:30 06:07 100 % 01:35 all night
Tue, 20-Aug 20:26 21:03 dusk dawn 05:32 06:09 98 % 02:28 all night
Wed, 21-Aug 20:24 21:01 21:14 dawn 05:34 06:10 93 % 03:18 before dawn
Thu, 22-Aug 20:22 20:58 21:27 dawn 05:35 06:12 85 % 04:09 before dawn
Fri, 23-Aug 20:20 20:56 21:40 dawn 05:37 06:13 76 % 05:00 before dawn
Sat, 24-Aug 20:17 20:54 21:56 dawn 05:39 06:15 66 % 05:53
Sun, 25-Aug 20:15 20:51 22:17 dawn 05:41 06:17 55 % 06:48
Mon, 26-Aug 20:13 20:49 22:46 dawn 05:42 06:18 44 % 07:45
Tue, 27-Aug 20:11 20:47 23:29 dawn 05:44 06:20 33 % 08:43
Wed, 28-Aug 20:09 20:44 00:26 dawn 05:46 06:22 24 % 09:40
Thu, 29-Aug 20:06 20:42 01:36 dawn 05:48 06:23 15 %
Fri, 30-Aug 20:04 20:40 02:52 dawn 05:49 06:25 9 %
Sat, 31-Aug 20:02 20:37 04:10 dawn 05:51 06:26 4 %
Sun, 01-Sep 20:00 20:35 05:26 dawn 05:53 06:28 1 %
Mon, 02-Sep 19:57 20:32 05:55 06:30 0 %
Tue, 03-Sep 19:55 20:30 05:56 06:31 1 % 13:34
Wed, 04-Sep 19:53 20:28 05:58 06:33 3 % 14:13
Thu, 05-Sep 19:51 20:25 dusk 20:30 06:00 06:35 7 % 14:52
Fri, 06-Sep 19:48 20:23 dusk 20:40 06:02 06:36 13 % 15:31
Sat, 07-Sep 19:46 20:20 dusk 20:51 06:03 06:38 20 % 16:12
Sun, 08-Sep 19:44 20:18 dusk 21:06 06:05 06:39 28 % 16:56
Mon, 09-Sep 19:41 20:16 dusk 21:26 06:07 06:41 37 % 17:43
Tue, 10-Sep 19:39 20:13 dusk 21:55 06:08 06:43 47 % 18:34
Wed, 11-Sep 19:37 20:11 dusk 22:39 06:10 06:44 57 % 19:29
Thu, 12-Sep 19:34 20:08 dusk 23:40 06:12 06:46 68 % 20:26
Fri, 13-Sep 19:32 20:06 dusk 00:59 06:13 06:47 78 % 21:25 after dusk
Sat, 14-Sep 19:30 20:04 dusk 02:28 06:15 06:49 86 % 22:23 after dusk
Sun, 15-Sep 19:27 20:01 dusk 04:01 06:17 06:51 93 % 23:19 after dusk
Mon, 16-Sep 19:25 19:59 dusk 05:35 06:18 06:52 98 % 00:12 after dusk
Tue, 17-Sep 19:23 19:57 dusk dawn 06:20 06:54 100 % 01:04 all night
Wed, 18-Sep 19:20 19:54 dusk dawn 06:22 06:56 99 % 01:56 all night
Thu, 19-Sep 19:18 19:52 dusk dawn 06:23 06:57 95 % 02:48 all night
Fri, 20-Sep 19:16 19:49 20:00 dawn 06:25 06:59 88 % 03:42 before dawn
Sat, 21-Sep 19:13 19:47 20:19 dawn 06:27 07:00 79 % 04:38 before dawn
Sun, 22-Sep 19:11 19:45 20:46 dawn 06:28 07:02 69 % 05:37
Mon, 23-Sep 19:09 19:42 21:24 dawn 06:30 07:04 59 % 06:36
Tue, 24-Sep 19:06 19:40 22:18 dawn 06:32 07:05 48 % 07:35
Wed, 25-Sep 19:04 19:38 23:25 dawn 06:33 07:07 38 % 08:30
Thu, 26-Sep 19:02 19:35 00:41 dawn 06:35 07:09 28 % 09:21
Fri, 27-Sep 19:00 19:33 01:58 dawn 06:37 07:10 20 % 10:09
Sat, 28-Sep 18:57 19:31 03:14 dawn 06:38 07:12 13 %
Sun, 29-Sep 18:55 19:28 04:28 dawn 06:40 07:14 7 %
Mon, 30-Sep 18:53 19:26 05:39 dawn 06:42 07:15 3 %
Tue, 01-Oct 18:50 19:24 06:43 07:17 1 %
Wed, 02-Oct 18:48 19:21 06:45 07:19 0 %
Thu, 03-Oct 18:46 19:19 06:47 07:20 1 % 13:30
Fri, 04-Oct 18:43 19:17 06:48 07:22 4 % 14:11
Sat, 05-Oct 18:41 19:15 06:50 07:24 9 % 14:54
Sun, 06-Oct 18:39 19:12 dusk 19:31 06:52 07:25 15 % 15:39
Mon, 07-Oct 18:37 19:10 dusk 19:56 06:53 07:27 23 % 16:29
Tue, 08-Oct 18:34 19:08 dusk 20:34 06:55 07:29 32 % 17:22
Wed, 09-Oct 18:32 19:06 dusk 21:27 06:57 07:30 42 % 18:17
Thu, 10-Oct 18:30 19:04 dusk 22:37 06:58 07:32 52 % 19:14
Fri, 11-Oct 18:28 19:01 dusk 00:00 07:00 07:34 63 % 20:10
Sat, 12-Oct 18:26 18:59 dusk 01:29 07:02 07:36 73 % 21:05
Sun, 13-Oct 18:23 18:57 dusk 02:59 07:03 07:37 83 % 21:57 after dusk
Mon, 14-Oct 18:21 18:55 dusk 04:30 07:05 07:39 91 % 22:49 after dusk
Tue, 15-Oct 18:19 18:53 dusk 06:02 07:07 07:41 97 % 23:40 after dusk
Wed, 16-Oct 18:17 18:51 dusk dawn 07:08 07:43 100 % 00:31 all night
Thu, 17-Oct 18:15 18:49 dusk dawn 07:10 07:44 100 % 01:25 all night
Fri, 18-Oct 18:13 18:47 dusk dawn 07:12 07:46 97 % 02:21 all night
Sat, 19-Oct 18:10 18:45 dusk dawn 07:13 07:48 91 % 03:21 all night
Sun, 20-Oct 18:08 18:43 19:18 dawn 07:15 07:50 83 % 04:23 before dawn
Mon, 21-Oct 18:06 18:41 20:06 dawn 07:17 07:51 74 % 05:24
Tue, 22-Oct 18:04 18:39 21:11 dawn 07:18 07:53 64 % 06:22
Wed, 23-Oct 18:02 18:37 22:26 dawn 07:20 07:55 54 % 07:16
Thu, 24-Oct 18:00 18:35 23:45 dawn 07:22 07:57 44 % 08:06
Fri, 25-Oct 17:58 18:33 01:02 dawn 07:23 07:58 34 % 08:51
Sat, 26-Oct 17:56 18:31 01:17 dawn 06:25 07:00 25 % 08:33
Sun, 27-Oct 16:54 17:29 02:28 dawn 06:27 07:02 17 % 09:12
Mon, 28-Oct 16:52 17:27 03:38 dawn 06:28 07:04 11 % 09:51
Tue, 29-Oct 16:50 17:26 04:48 dawn 06:30 07:05 6 % 10:30
Wed, 30-Oct 16:49 17:24 05:59 dawn 06:32 07:07 2 %
Thu, 31-Oct 16:47 17:22 06:33 07:09 0 %
Fri, 01-Nov 16:45 17:20 06:35 07:11 0 %

Notes

  • The moon's phase or fracillum (percentage of the moon illuminated) doesn't vary much with location.
  • A full moon is not just bigger, its much brighter. A half moon ('50%') give less than 5% of the illumination of a full moon. You can walk with a half 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
  • Of course, you need a cloudless night as well!

Brecon Beacons weather (Accuweather)

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