The ridge of The Skirrid and Hatterrall Hill

SWC Walk 347 - Llanvihangel Crucorney Circular (via Bryn Arw and The Skirrid)

17-Sep-19 • thomasgrabow on Flickr

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Bryn Arw from ascent up Llwygy hill

SWC Walk 347 - Llanvihangel Crucorney Circular (via Bryn Arw and The Skirrid)

17-Sep-19 • thomasgrabow on Flickr

swcwalks swcwalk347 walkicon

The Skirrid from ascent up Llwygy hill

SWC Walk 347 - Llanvihangel Crucorney Circular (via Bryn Arw and The Skirrid)

17-Sep-19 • thomasgrabow on Flickr

swcwalks swcwalk347 walkicon

Sugar Loaf from flank of Ysgyryd Fawr

SWC Walk 347 - Llanvihangel Crucorney Circular (via Bryn Arw and The Skirrid)

17-Sep-19 • thomasgrabow on Flickr

swcwalks swcwalk347 walkicon

Trig Point with Views, The Skirrid/Ysgyryd Fawr

SWC Walk 347 - Llanvihangel Crucorney Circular (via Bryn Arw and The Skirrid)

17-Sep-19 • thomasgrabow on Flickr

swcwalks swcwalk347 walkicon

Backview of Prow of The Skirrid (landslip on right-hand side)

SWC Walk 347 - Llanvihangel Crucorney Circular (via Bryn Arw and The Skirrid)

17-Sep-19 • thomasgrabow on Flickr

swcwalks swcwalk347 walkicon

Barn at Llanvihangel Court

SWC Walk 347 - Llanvihangel Crucorney Circular (via Bryn Arw and The Skirrid)

17-Sep-19 • thomasgrabow on Flickr

swcwalks swcwalk347 walkicon

Llanvihangel Crucorney Circular via Bryn Arw and The Skirrid walk

Two easily accessible ridge walks south east of the Black Mountains, quiet pastures with views and a Michelin-starred lunch pub

Hiking Weather

7 Day Forecast for Brecon Beacons NP

Sunset: 16:40. Dusk: 17:18. Moon: 20% (05:15 to dawn)

8 9 10 11 12 13 14 15 16 17 18 19 20
Mon, 20-Jan
Tue, 21-Jan 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 1% 1%
Wed, 22-Jan 0% 0% 0% 0% 0% 0% 6% 7% 6% 6% 4% 2% 2%
Thu, 23-Jan 4% 7% 6% 0% 0% 0% 0% 0% 0% 4% 4% 3% 0%
Fri, 24-Jan 0% 0% 0% 0% 2% 5% 5% 5% 6% 6% 5% 3% 2%
Sat, 25-Jan 7% 6% 8% 9% 8% 8% 10% 14% 16% 17% 21% 20% 20%
Sun, 26-Jan 26% 24% 17% 14% 11% 9% 9% 13% 15% 16% 14% 13% 14%
Mon, 27-Jan 63% 54% 42% 35% 34% 51% 73% 82% 82% 76% 76% 72% 71%

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Met Office Forecast

Wales

Cold and frosty, with widespread freezing fog developing.

This Evening and Tonight:

It looks to be clear and frosty for a while tonight, but with widespread fog and freezing fog developing through the early hours, especially for the south. Minimum Temperature -4C.

Tuesday:

Fog and freezing fog could take much of the day to lift, but some brightness should develop in the afternoon, particularly in the south. Cold where fog lingers. Maximum Temperature 8C.

Outlook for Wednesday to Friday:

Wednesday and Thursday look to be overcast, with patchy rain at times. Fog patches may linger for much of the day, keeping it chilly. Conditions may turn less murky Friday.

Day 6-7 and Week 2:

Into the weekend, it will be staying cloudy for most. A spell of rain is likely for a time in the northwest, spreading southeast across most parts, accompanied by strengthening winds. Next week, it looks like the south will see the driest weather, whilst the north could be wetter and windier at times. Later on in this period, some rain may briefly spread further southeast across the UK, although the most unsettled weather is likely to remain in the north and northwest, where some hill snow is possible. Further southeast drier spells will be accompanied by the best of any brightness, along with the greatest risk of fog and frost. Temperatures will generally be near average, although a little below at times in the north.

Week 3 and 4:

Through the first half of February, we are likely to see a north/south split continuing; with the north being more unsettled than the south. The heaviest of the rainfall and strongest winds are likely to be seen across the northwest. The south is more likely to see drier, brighter conditions with light winds. There is potentially a greater risk of frost and fog patches developing towards the south. During colder, showery interludes, any snow will most likely be over higher ground in the north, but it could fall to lower levels at times. Temperatures will remain close to or above average through the period, though will likely fluctuate as frontal systems pass through, especially in the north.

Met Office : Wales : 2020-01-20T15:09:13

Daylight : Brecon Beacons NP

Date Dawn Sunrise Sunset Dusk Day Length
Mon, 20-Jan 07:32 08:10 16:40 17:18 9:46
Tue, 21-Jan 07:31 08:09 16:41 17:20 9:49
Wed, 22-Jan 07:30 08:08 16:43 17:21 9:51
Thu, 23-Jan 07:29 08:07 16:45 17:23 9:54
Fri, 24-Jan 07:28 08:05 16:47 17:24 9:56
Sat, 25-Jan 07:27 08:04 16:48 17:26 9:59
Sun, 26-Jan 07:25 08:03 16:50 17:28 10:03
Mon, 27-Jan 07:24 08:01 16:52 17:29 10:05
Tue, 28-Jan 07:23 08:00 16:54 17:31 10:08
Wed, 29-Jan 07:22 07:59 16:56 17:33 10:11
Thu, 30-Jan 07:20 07:57 16:57 17:34 10:14
Fri, 31-Jan 07:19 07:56 16:59 17:36 10:17
Sat, 01-Feb 07:18 07:54 17:01 17:38 10:20
Sun, 02-Feb 07:16 07:53 17:03 17:39 10:23
Mon, 03-Feb 07:15 07:51 17:05 17:41 10:26
Tue, 04-Feb 07:13 07:49 17:07 17:43 10:30
Wed, 05-Feb 07:12 07:48 17:08 17:45 10:33
Thu, 06-Feb 07:10 07:46 17:10 17:46 10:36
Fri, 07-Feb 07:09 07:44 17:12 17:48 10:39
Sat, 08-Feb 07:07 07:43 17:14 17:50 10:43
Sun, 09-Feb 07:05 07:41 17:16 17:51 10:46
Mon, 10-Feb 07:04 07:39 17:18 17:53 10:49
Tue, 11-Feb 07:02 07:37 17:20 17:55 10:53
Wed, 12-Feb 07:00 07:35 17:21 17:57 10:57
Thu, 13-Feb 06:58 07:33 17:23 17:58 11:00
Fri, 14-Feb 06:57 07:32 17:25 18:00 11:03
Sat, 15-Feb 06:55 07:30 17:27 18:02 11:07
Sun, 16-Feb 06:53 07:28 17:29 18:04 11:11
Mon, 17-Feb 06:51 07:26 17:31 18:05 11:14
Tue, 18-Feb 06:49 07:24 17:33 18:07 11:18
Wed, 19-Feb 06:47 07:22 17:34 18:09 11:22
Thu, 20-Feb 06:45 07:20 17:36 18:11 11:26
Fri, 21-Feb 06:43 07:18 17:38 18:12 11:29
Sat, 22-Feb 06:41 07:16 17:40 18:14 11:33
Sun, 23-Feb 06:39 07:13 17:42 18:16 11:37
Mon, 24-Feb 06:37 07:11 17:44 18:18 11:41
Tue, 25-Feb 06:35 07:09 17:45 18:19 11:44
Wed, 26-Feb 06:33 07:07 17:47 18:21 11:48
Thu, 27-Feb 06:31 07:05 17:49 18:23 11:52
Fri, 28-Feb 06:29 07:03 17:51 18:25 11:56
Sat, 29-Feb 06:27 07:01 17:53 18:26 11:59
Sun, 01-Mar 06:25 06:59 17:54 18:28 12:03
Mon, 02-Mar 06:23 06:56 17:56 18:30 12:07
Tue, 03-Mar 06:21 06:54 17:58 18:32 12:11
Wed, 04-Mar 06:18 06:52 18:00 18:33 12:15
Thu, 05-Mar 06:16 06:50 18:01 18:35 12:19
Fri, 06-Mar 06:14 06:48 18:03 18:37 12:23
Sat, 07-Mar 06:12 06:45 18:05 18:39 12:27
Sun, 08-Mar 06:10 06:43 18:07 18:40 12:30
Mon, 09-Mar 06:07 06:41 18:09 18:42 12:35
Tue, 10-Mar 06:05 06:39 18:10 18:44 12:39
Wed, 11-Mar 06:03 06:36 18:12 18:46 12:43
Thu, 12-Mar 06:01 06:34 18:14 18:47 12:46
Fri, 13-Mar 05:58 06:32 18:16 18:49 12:51
Sat, 14-Mar 05:56 06:29 18:17 18:51 12:55
Sun, 15-Mar 05:54 06:27 18:19 18:53 12:59
Mon, 16-Mar 05:51 06:25 18:21 18:54 13:03
Tue, 17-Mar 05:49 06:22 18:22 18:56 13:07
Wed, 18-Mar 05:47 06:20 18:24 18:58 13:11
Thu, 19-Mar 05:44 06:18 18:26 19:00 13:16
Fri, 20-Mar 05:42 06:16 18:28 19:01 13:19
Sat, 21-Mar 05:40 06:13 18:29 19:03 13:23
Sun, 22-Mar 05:37 06:11 18:31 19:05 13:28
Mon, 23-Mar 05:35 06:09 18:33 19:07 13:32
Tue, 24-Mar 05:33 06:06 18:35 19:08 13:35
Wed, 25-Mar 05:30 06:04 18:36 19:10 13:40
Thu, 26-Mar 05:28 06:02 18:38 19:12 13:44
Fri, 27-Mar 05:26 05:59 18:40 19:14 13:48
Sat, 28-Mar 05:23 05:57 18:41 19:15 13:52
Mon, 30-Mar 06:18 06:53 19:45 20:19 14:01
Tue, 31-Mar 06:16 06:50 19:46 20:21 14:05
Wed, 01-Apr 06:14 06:48 19:48 20:23 14:09
Thu, 02-Apr 06:11 06:46 19:50 20:24 14:13
Fri, 03-Apr 06:09 06:43 19:52 20:26 14:17
Sat, 04-Apr 06:07 06:41 19:53 20:28 14:21
Sun, 05-Apr 06:04 06:39 19:55 20:30 14:26
Mon, 06-Apr 06:02 06:37 19:57 20:32 14:30
Tue, 07-Apr 06:00 06:34 19:58 20:33 14:33
Wed, 08-Apr 05:57 06:32 20:00 20:35 14:38
Thu, 09-Apr 05:55 06:30 20:02 20:37 14:42
Fri, 10-Apr 05:52 06:28 20:03 20:39 14:47
Sat, 11-Apr 05:50 06:25 20:05 20:41 14:51
Sun, 12-Apr 05:48 06:23 20:07 20:42 14:54
Mon, 13-Apr 05:45 06:21 20:09 20:44 14:59
Tue, 14-Apr 05:43 06:19 20:10 20:46 15:03
Wed, 15-Apr 05:41 06:17 20:12 20:48 15:07
Thu, 16-Apr 05:38 06:14 20:14 20:50 15:12
Fri, 17-Apr 05:36 06:12 20:15 20:52 15:16
Sat, 18-Apr 05:34 06:10 20:17 20:54 15:20
Sun, 19-Apr 05:32 06:08 20:19 20:55 15:23
Mon, 20-Apr 05:29 06:06 20:20 20:57 15:28
Tue, 21-Apr 05:27 06:04 20:22 20:59 15:32
Wed, 22-Apr 05:25 06:02 20:24 21:01 15:36
Thu, 23-Apr 05:22 06:00 20:26 21:03 15:41
Fri, 24-Apr 05:20 05:58 20:27 21:05 15:45
Sat, 25-Apr 05:18 05:56 20:29 21:07 15:49
Sun, 26-Apr 05:16 05:54 20:31 21:09 15:53
Mon, 27-Apr 05:14 05:52 20:32 21:10 15:56
Tue, 28-Apr 05:11 05:50 20:34 21:12 16:01
Wed, 29-Apr 05:09 05:48 20:36 21:14 16:05
Thu, 30-Apr 05:07 05:46 20:37 21:16 16:09
Fri, 01-May 05:05 05:44 20:39 21:18 16:13
Sat, 02-May 05:03 05:42 20:41 21:20 16:17
Sun, 03-May 05:01 05:40 20:42 21:22 16:21
Mon, 04-May 04:59 05:38 20:44 21:24 16:25
Tue, 05-May 04:57 05:36 20:46 21:25 16:28
Wed, 06-May 04:55 05:35 20:47 21:27 16:32
Thu, 07-May 04:53 05:33 20:49 21:29 16:36
Fri, 08-May 04:51 05:31 20:50 21:31 16:40
Sat, 09-May 04:49 05:29 20:52 21:33 16:44
Sun, 10-May 04:47 05:28 20:54 21:35 16:48
Mon, 11-May 04:45 05:26 20:55 21:37 16:52
Tue, 12-May 04:43 05:25 20:57 21:38 16:55
Wed, 13-May 04:41 05:23 20:58 21:40 16:59
Thu, 14-May 04:40 05:21 21:00 21:42 17:02
Fri, 15-May 04:38 05:20 21:01 21:44 17:06
Sat, 16-May 04:36 05:18 21:03 21:46 17:10
Sun, 17-May 04:34 05:17 21:04 21:47 17:13
Mon, 18-May 04:33 05:16 21:06 21:49 17:16
Tue, 19-May 04:31 05:14 21:07 21:51 17:20

Data: US Navy Observatory

Moonlight : Brecon Beacons NP

Date Sunset Dusk Moon Rise Moon Set Dawn Sunrise % Full Max. Ht. Night Walk
Mon, 20-Jan 16:40 17:18 05:15 dawn 07:31 08:09 20% 09:27
Tue, 21-Jan 16:41 17:20 06:23 dawn 07:30 08:08 12% 10:21
Wed, 22-Jan 16:43 17:21 07:21 dawn 07:29 08:07 6% 11:16
Thu, 23-Jan 16:45 17:23 07:28 08:05 2%
Fri, 24-Jan 16:47 17:24 07:27 08:04 0%
Sat, 25-Jan 16:48 17:26 07:25 08:03 0%
Sun, 26-Jan 16:50 17:28 dusk 18:29 07:24 08:01 3% 13:47
Mon, 27-Jan 16:52 17:29 dusk 19:37 07:23 08:00 7% 14:32
Tue, 28-Jan 16:54 17:31 dusk 20:44 07:22 07:59 12% 15:15
Wed, 29-Jan 16:56 17:33 dusk 21:51 07:20 07:57 19% 15:56
Thu, 30-Jan 16:57 17:34 dusk 22:57 07:19 07:56 27% 16:37
Fri, 31-Jan 16:59 17:36 dusk 00:04 07:18 07:54 35% 17:17
Sat, 01-Feb 17:01 17:38 dusk 01:11 07:16 07:53 45% 17:59
Sun, 02-Feb 17:03 17:39 dusk 02:21 07:15 07:51 50% 18:44
Mon, 03-Feb 17:05 17:41 dusk 03:32 07:13 07:49 64% 19:31
Tue, 04-Feb 17:07 17:43 dusk 04:42 07:12 07:48 73% 20:22
Wed, 05-Feb 17:08 17:45 dusk 05:48 07:10 07:46 82% 21:17 after dusk
Thu, 06-Feb 17:10 17:46 dusk 06:45 07:09 07:44 90% 22:15 after dusk
Fri, 07-Feb 17:12 17:48 dusk dawn 07:07 07:43 95% 23:15 all night
Sat, 08-Feb 17:14 17:50 dusk dawn 07:05 07:41 99% 00:15 all night
Sun, 09-Feb 17:16 17:51 dusk dawn 07:04 07:39 100% 01:14 all night
Mon, 10-Feb 17:18 17:53 18:56 dawn 07:02 07:37 98% 02:09 before dawn
Tue, 11-Feb 17:20 17:55 20:22 dawn 07:00 07:35 93% 03:03 before dawn
Wed, 12-Feb 17:21 17:57 21:47 dawn 06:58 07:33 86% 03:55 before dawn
Thu, 13-Feb 17:23 17:58 23:11 dawn 06:57 07:32 76% 04:47 before dawn
Fri, 14-Feb 17:25 18:00 00:32 dawn 06:55 07:30 66% 05:38
Sat, 15-Feb 17:27 18:02 01:52 dawn 06:53 07:28 50% 06:30
Sun, 16-Feb 17:29 18:04 03:07 dawn 06:51 07:26 44% 07:24
Mon, 17-Feb 17:31 18:05 04:17 dawn 06:49 07:24 33% 08:17
Tue, 18-Feb 17:33 18:07 05:17 dawn 06:47 07:22 24% 09:11
Wed, 19-Feb 17:34 18:09 06:06 dawn 06:45 07:20 16% 10:04
Thu, 20-Feb 17:36 18:11 06:43 07:18 9%
Fri, 21-Feb 17:38 18:12 06:41 07:16 4%
Sat, 22-Feb 17:40 18:14 06:39 07:13 1%
Sun, 23-Feb 17:42 18:16 06:37 07:11 0%
Mon, 24-Feb 17:44 18:18 dusk 18:33 06:35 07:09 1% 13:12
Tue, 25-Feb 17:45 18:19 dusk 19:40 06:33 07:07 3% 13:53
Wed, 26-Feb 17:47 18:21 dusk 20:46 06:31 07:05 7% 14:34
Thu, 27-Feb 17:49 18:23 dusk 21:52 06:29 07:03 13% 15:15
Fri, 28-Feb 17:51 18:25 dusk 22:59 06:27 07:01 20% 15:56
Sat, 29-Feb 17:53 18:26 dusk 00:07 06:25 06:59 28% 16:39
Sun, 01-Mar 17:54 18:28 dusk 01:16 06:23 06:56 37% 17:24
Mon, 02-Mar 17:56 18:30 dusk 02:25 06:21 06:54 50% 18:12
Tue, 03-Mar 17:58 18:32 dusk 03:31 06:18 06:52 57% 19:04
Wed, 04-Mar 18:00 18:33 dusk 04:31 06:16 06:50 67% 19:59
Thu, 05-Mar 18:01 18:35 dusk 05:23 06:14 06:48 77% 20:57 after dusk
Fri, 06-Mar 18:03 18:37 dusk 06:04 06:12 06:45 85% 21:56 after dusk
Sat, 07-Mar 18:05 18:39 dusk dawn 06:10 06:43 93% 22:54 all night
Sun, 08-Mar 18:07 18:40 dusk dawn 06:07 06:41 98% 23:52 all night
Mon, 09-Mar 18:09 18:42 dusk dawn 06:05 06:39 100% 00:47 all night
Tue, 10-Mar 18:10 18:44 19:17 dawn 06:03 06:36 99% 01:42 before dawn
Wed, 11-Mar 18:12 18:46 20:45 dawn 06:01 06:34 95% 02:35 before dawn
Thu, 12-Mar 18:14 18:47 22:11 dawn 05:58 06:32 89% 03:29 before dawn
Fri, 13-Mar 18:16 18:49 23:35 dawn 05:56 06:29 80% 04:23 before dawn
Sat, 14-Mar 18:17 18:51 00:55 dawn 05:54 06:27 70% 05:17
Sun, 15-Mar 18:19 18:53 02:09 dawn 05:51 06:25 60% 06:12
Mon, 16-Mar 18:21 18:54 03:14 dawn 05:49 06:22 50% 07:07
Tue, 17-Mar 18:22 18:56 04:06 dawn 05:47 06:20 39% 08:00
Wed, 18-Mar 18:24 18:58 04:48 dawn 05:44 06:18 29% 08:52
Thu, 19-Mar 18:26 19:00 05:21 dawn 05:42 06:16 21% 09:40
Fri, 20-Mar 18:28 19:01 05:40 06:13 13%
Sat, 21-Mar 18:29 19:03 05:37 06:11 8%
Sun, 22-Mar 18:31 19:05 05:35 06:09 3%
Mon, 23-Mar 18:33 19:07 05:33 06:06 1%
Tue, 24-Mar 18:35 19:08 05:30 06:04 0%
Wed, 25-Mar 18:36 19:10 dusk 19:43 05:28 06:02 1% 13:13
Thu, 26-Mar 18:38 19:12 dusk 20:50 05:26 05:59 4% 13:54
Fri, 27-Mar 18:40 19:14 dusk 21:58 05:23 05:57 9% 14:37
Sat, 28-Mar 18:41 19:15 dusk 01:15 06:18 06:53 15% 15:21
Mon, 30-Mar 19:45 20:19 dusk 02:22 06:16 06:50 30% 17:57
Tue, 31-Mar 19:46 20:21 dusk 03:23 06:14 06:48 40% 18:50
Wed, 01-Apr 19:48 20:23 dusk 04:16 06:11 06:46 50% 19:45
Thu, 02-Apr 19:50 20:24 dusk 05:00 06:09 06:43 61% 20:41
Fri, 03-Apr 19:52 20:26 dusk 05:35 06:07 06:41 72% 21:38
Sat, 04-Apr 19:53 20:28 dusk 06:03 06:04 06:39 81% 22:34 after dusk
Sun, 05-Apr 19:55 20:30 dusk dawn 06:02 06:37 89% 23:30 all night
Mon, 06-Apr 19:57 20:32 dusk dawn 06:00 06:34 96% 00:24 all night
Tue, 07-Apr 19:58 20:33 dusk dawn 05:57 06:32 99% 01:18 all night
Wed, 08-Apr 20:00 20:35 20:38 dawn 05:55 06:30 100% 02:12 before dawn
Thu, 09-Apr 20:02 20:37 22:06 dawn 05:52 06:28 97% 03:08 before dawn
Fri, 10-Apr 20:03 20:39 23:32 dawn 05:50 06:25 92% 04:04 before dawn
Sat, 11-Apr 20:05 20:41 00:53 dawn 05:48 06:23 84% 05:01 before dawn
Sun, 12-Apr 20:07 20:42 02:04 dawn 05:45 06:21 75% 05:58 before dawn
Mon, 13-Apr 20:09 20:44 03:03 dawn 05:43 06:19 65% 06:54
Tue, 14-Apr 20:10 20:46 03:50 dawn 05:41 06:17 50% 07:47
Wed, 15-Apr 20:12 20:48 04:25 dawn 05:38 06:14 45% 08:38
Thu, 16-Apr 20:14 20:50 04:53 dawn 05:36 06:12 35% 09:25
Fri, 17-Apr 20:15 20:52 05:15 dawn 05:34 06:10 26% 10:09
Sat, 18-Apr 20:17 20:54 05:32 06:08 18%
Sun, 19-Apr 20:19 20:55 05:29 06:06 12%
Mon, 20-Apr 20:20 20:57 05:27 06:04 6%
Tue, 21-Apr 20:22 20:59 05:25 06:02 3%
Wed, 22-Apr 20:24 21:01 05:22 06:00 1%
Thu, 23-Apr 20:26 21:03 05:20 05:58 0%
Fri, 24-Apr 20:27 21:05 dusk 21:58 05:18 05:56 2% 14:19
Sat, 25-Apr 20:29 21:07 dusk 23:08 05:16 05:54 5% 15:05
Sun, 26-Apr 20:31 21:09 dusk 00:16 05:14 05:52 10% 15:54
Mon, 27-Apr 20:32 21:10 dusk 01:19 05:11 05:50 17% 16:46
Tue, 28-Apr 20:34 21:12 dusk 02:14 05:09 05:48 26% 17:39
Wed, 29-Apr 20:36 21:14 dusk 03:00 05:07 05:46 35% 18:34
Thu, 30-Apr 20:37 21:16 dusk 03:37 05:05 05:44 50% 19:30
Fri, 01-May 20:39 21:18 dusk 04:06 05:03 05:42 57% 20:24
Sat, 02-May 20:41 21:20 dusk 04:30 05:01 05:40 68% 21:18
Sun, 03-May 20:42 21:22 dusk 04:52 04:59 05:38 78% 22:10 after dusk
Mon, 04-May 20:44 21:24 dusk dawn 04:57 05:36 87% 23:03 all night
Tue, 05-May 20:46 21:25 dusk dawn 04:55 05:35 94% 23:56 all night
Wed, 06-May 20:47 21:27 dusk dawn 04:53 05:33 98% 00:50 all night
Thu, 07-May 20:49 21:29 dusk dawn 04:51 05:31 100% 01:46 all night
Fri, 08-May 20:50 21:31 22:25 dawn 04:49 05:29 98% 02:44 before dawn
Sat, 09-May 20:52 21:33 23:44 dawn 04:47 05:28 94% 03:43 before dawn
Sun, 10-May 20:54 21:35 00:52 dawn 04:45 05:26 88% 04:41 before dawn
Mon, 11-May 20:55 21:37 01:45 dawn 04:43 05:25 80% 05:38 before dawn
Tue, 12-May 20:57 21:38 02:26 dawn 04:41 05:23 71% 06:31
Wed, 13-May 20:58 21:40 02:57 dawn 04:40 05:21 61% 07:20
Thu, 14-May 21:00 21:42 03:21 dawn 04:38 05:20 50% 08:06
Fri, 15-May 21:01 21:44 03:41 dawn 04:36 05:18 42% 08:49
Sat, 16-May 21:03 21:46 03:57 dawn 04:34 05:17 32% 09:31
Sun, 17-May 21:04 21:47 04:13 dawn 04:33 05:16 24% 10:11
Mon, 18-May 21:06 21:49 04:28 dawn 04:31 05:14 16% 10:52
Tue, 19-May 21:07 21:51 04:29 05:13 10%

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, and, (ii) if there are hills on the horizon.
  • Of course, you need a cloudless night as well!
  • Data: US Navy Observatory

Met Office Mountain Forecast

Issued: 1800 on 2020-01-20 for Brecon Beacons

Today

Morning mist and fog in the valleys. Dry and sunny on the tops. Light winds.

Summary Widespread frost at first with areas of fog in the valleys slow to clear during the day. Otherwise, a bright day with plenty of bright or sunny spells. A sheet of cloud will spread south across the Park around late afternoon or early evening.
Chance of Cloud free tops 80% for most of the day, becoming 30% later. Mainly clear summits through morning into the afternoon with just patches of low cloud. Extensive summit cloud spreading south later with bases lowering through the evening.
Ground conditions
Visibility Locally very poor in valley fog, otherwise clear views from the tops but becoming hazy through the afternoon.
Poor Visibility: Low Likelihood
060708 091011 121314 151617 181920 212223
Weather Cloudy Mist Cloudy Mist Sunny intervals Sunny intervals
Rain <05% <05% <05% <05% <05% <05%
Temp (tops) 1 1 1 0 1 2
Wind (tops) 8 5 5 6 4 7
Freezing Level 800m 800m 600m 500m 700m 900m
Day 1

Cloudy and misty morning with the odd spot of light rain or drizzle. Staying mostly cloudy in the afternoon but some brightness coming through for a time, more especially across the southwest the Park.

Ice Above summits.
Visibility Often poor or very poor during the morning with extensive low cloud but improving in afternoon as cloud lifts and breaks. Generally hazy conditions under the cloud but improving through the afternoon.
Wind Northwest 5-10mph becoming NE 15-20mph.
Temp Plus 3 rising to 5 or 6 Celsius. (at high level)
Day 2

Another cloudy start with extensive hill fog, but some brighter interludes in the afternoon. Mainly dry except for some patchy light drizzle. Light west or southwesterly winds. Freezing level above summits.

Day 3

A cloudy and misty start but some bright spells developing in the afternoon. Feeling colder on the tops with a light easterly breeze.

Day 4

Cloudy but dry morning then outbreaks of rain spreading east during the afternoon. Southerly winds becoming strong on the tops.

Data: Met Office