SDC10572

13-Aug-10 • Andrew Murphy

SDC10573

13-Aug-10 • Andrew Murphy

SDC10575

13-Aug-10 • Andrew Murphy

SDC10576

13-Aug-10 • Andrew Murphy

SDC10577

13-Aug-10 • Andrew Murphy

SDC10579

13-Aug-10 • Andrew Murphy

Snowdon walk

A beginners guide to safely climbing the highest mountain in England and Wales.

Hiking Weather

7 Day Forecast for Snowdonia NP

Sunset: 17:34. Dusk: 18:09. Moon: 16% (06:14 to dawn)

8 9 10 11 12 13 14 15 16 17 18 19 20
Wed, 19-Feb 61% 75% 80% 85% 85% 83% 78% 74% 73% 70%
Thu, 20-Feb 82% 83% 85% 81% 66% 54% 50% 42% 31% 24% 22% 24% 32%
Fri, 21-Feb 25% 22% 21% 22% 21% 20% 21% 24% 31% 40% 49% 62% 71%
Sat, 22-Feb 15% 15% 15% 16% 16% 18% 18% 17% 15% 19% 24% 31% 50%
Sun, 23-Feb 65% 56% 52% 34% 25% 24% 19% 14% 8% 6% 4% 3% 0%
Mon, 24-Feb 33% 32% 28% 27% 32% 30% 31% 37% 51% 61% 62% 50% 41%
Tue, 25-Feb 46% 51% 56% 64% 68% 71% 71% 63% 55% 44% 34% 32% 35%
Wed, 26-Feb 25% 21% 21% 23%

Powered by Dark Sky

Loading...

Met Office Forecast

Wales

Unsettled with spells of heavy rain and strong winds.

Today:

A mostly dry and bright start, but rain will push in from the west through the morning. It will be heavy at times, particularly across northern areas. Remaining breezy throughout. Maximum Temperature 9C.

Tonight:

Rain will continue through the evening, and become heavier overnight. There are rainfall warnings in force for both the north and south of the country. The winds will remain strong Minimum Temperature 7C.

Thursday:

A very wet and windy start, but the rain should begin to clear away later in the morning. A drier afternoon will follow with a mixture of sunshine and showers. Maximum Temperature 10C.

Outlook for Friday to Sunday:

A windy but drier outlook, with sunny spells on Friday and Saturday. Heavy rain overnight. Sunday will be slightly more unsettled with rain likely through most of the day.

Day 6-7 and Week 2:

Unsettled and often windy conditions are expected to continue with areas of rain moving east across the UK interspersed with brighter, showery interludes. Rain is likely to be heaviest across western and northwestern areas, especially over the hills, with the best of any more prolonged drier interludes in the south and east. Hail and thunder are also possible in the showery interludes with snow at times over northern hills. Temperatures will generally be around average, but above in the south. Some brief quieter, colder spells are also possible later in the period, especially in southern and eastern areas, these bringing some overnight frost and patchy fog in places. Elsewhere will continue to see spells of wet and windy weather.

Week 3 and 4:

A continuation of the unsettled weather is expected at first, with spells of rain and strong winds broken by brighter but showery conditions. The heaviest rain and strongest winds are expected in the northwest, with drier conditions expected in southern and eastern parts. It will perhaps become more generally settled throughout the UK by the middle of March, with more prolonged dry spells, particularly in the south and east, with wetter conditions more likely to be confined to the northwest. Temperatures are expected to stay above average, with any cold interludes fairly brief.

Met Office : Wales : 2020-02-19T03:28:22

Daylight : Snowdonia NP

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

Data: US Navy Observatory

Moonlight : Snowdonia NP

Date Sunset Dusk Moon Rise Moon Set Dawn Sunrise % Full Max. Ht. Night Walk
Wed, 19-Feb 17:34 18:09 06:14 dawn 06:48 07:24 16% 10:05
Thu, 20-Feb 17:36 18:11 06:46 07:21 9%
Fri, 21-Feb 17:38 18:13 06:44 07:19 4%
Sat, 22-Feb 17:40 18:15 06:42 07:17 1%
Sun, 23-Feb 17:42 18:17 06:40 07:15 0%
Mon, 24-Feb 17:44 18:19 dusk 18:33 06:38 07:13 1% 13:13
Tue, 25-Feb 17:45 18:20 dusk 19:41 06:36 07:11 3% 13:55
Wed, 26-Feb 17:47 18:22 dusk 20:48 06:34 07:08 7% 14:36
Thu, 27-Feb 17:49 18:24 dusk 21:55 06:32 07:06 13% 15:16
Fri, 28-Feb 17:51 18:26 dusk 23:03 06:29 07:04 20% 15:58
Sat, 29-Feb 17:53 18:28 dusk 00:12 06:27 07:02 28% 16:40
Sun, 01-Mar 17:55 18:29 dusk 01:22 06:25 06:59 37% 17:26
Mon, 02-Mar 17:57 18:31 dusk 02:32 06:23 06:57 50% 18:14
Tue, 03-Mar 17:59 18:33 dusk 03:39 06:20 06:55 57% 19:06
Wed, 04-Mar 18:00 18:35 dusk 04:39 06:18 06:53 67% 20:01
Thu, 05-Mar 18:02 18:37 dusk 05:30 06:16 06:50 77% 20:59 after dusk
Fri, 06-Mar 18:04 18:39 dusk 06:11 06:14 06:48 85% 21:57 after dusk
Sat, 07-Mar 18:06 18:40 dusk dawn 06:11 06:46 93% 22:56 all night
Sun, 08-Mar 18:08 18:42 dusk dawn 06:09 06:43 98% 23:53 all night
Mon, 09-Mar 18:10 18:44 dusk dawn 06:07 06:41 100% 00:49 all night
Tue, 10-Mar 18:11 18:46 19:19 dawn 06:04 06:39 99% 01:43 before dawn
Wed, 11-Mar 18:13 18:48 20:48 dawn 06:02 06:36 95% 02:37 before dawn
Thu, 12-Mar 18:15 18:50 22:15 dawn 06:00 06:34 89% 03:31 before dawn
Fri, 13-Mar 18:17 18:51 23:41 dawn 05:57 06:31 80% 04:25 before dawn
Sat, 14-Mar 18:19 18:53 01:02 dawn 05:55 06:29 70% 05:19
Sun, 15-Mar 18:21 18:55 02:17 dawn 05:53 06:27 60% 06:14
Mon, 16-Mar 18:22 18:57 03:22 dawn 05:50 06:24 50% 07:09
Tue, 17-Mar 18:24 18:59 04:14 dawn 05:48 06:22 39% 08:02
Wed, 18-Mar 18:26 19:00 04:56 dawn 05:45 06:20 29% 08:54
Thu, 19-Mar 18:28 19:02 05:27 dawn 05:43 06:17 21% 09:42
Fri, 20-Mar 18:30 19:04 05:40 06:15 13%
Sat, 21-Mar 18:31 19:06 05:38 06:12 8%
Sun, 22-Mar 18:33 19:08 05:36 06:10 3%
Mon, 23-Mar 18:35 19:10 05:33 06:08 1%
Tue, 24-Mar 18:37 19:11 05:31 06:05 0%
Wed, 25-Mar 18:39 19:13 dusk 19:46 05:28 06:03 1% 13:15
Thu, 26-Mar 18:40 19:15 dusk 20:54 05:26 06:01 4% 13:56
Fri, 27-Mar 18:42 19:17 dusk 22:03 05:23 05:58 9% 14:38
Sat, 28-Mar 18:44 19:19 dusk 00:13 06:21 06:56 15% 15:23
Sun, 29-Mar 19:46 20:21 dusk 01:22 06:18 06:53 22% 17:09
Mon, 30-Mar 19:48 20:23 dusk 02:29 06:16 06:51 30% 17:59
Tue, 31-Mar 19:49 20:24 dusk 03:31 06:14 06:49 40% 18:52
Wed, 01-Apr 19:51 20:26 dusk 04:24 06:11 06:46 50% 19:47
Thu, 02-Apr 19:53 20:28 dusk 05:07 06:09 06:44 61% 20:43
Fri, 03-Apr 19:55 20:30 dusk 05:41 06:06 06:42 72% 21:40
Sat, 04-Apr 19:56 20:32 dusk dawn 06:04 06:39 81% 22:36 all night
Sun, 05-Apr 19:58 20:34 dusk dawn 06:01 06:37 89% 23:31 all night
Mon, 06-Apr 20:00 20:36 dusk dawn 05:59 06:35 96% 00:26 all night
Tue, 07-Apr 20:02 20:38 dusk dawn 05:56 06:32 99% 01:20 all night
Wed, 08-Apr 20:03 20:40 20:42 dawn 05:54 06:30 100% 02:14 before dawn
Thu, 09-Apr 20:05 20:41 22:11 dawn 05:52 06:28 97% 03:09 before dawn
Fri, 10-Apr 20:07 20:43 23:38 dawn 05:49 06:25 92% 04:06 before dawn
Sat, 11-Apr 20:09 20:45 01:00 dawn 05:47 06:23 84% 05:03 before dawn
Sun, 12-Apr 20:11 20:47 02:12 dawn 05:44 06:21 75% 06:00 before dawn
Mon, 13-Apr 20:12 20:49 03:11 dawn 05:42 06:18 65% 06:56
Tue, 14-Apr 20:14 20:51 03:57 dawn 05:39 06:16 50% 07:49
Wed, 15-Apr 20:16 20:53 04:32 dawn 05:37 06:14 45% 08:39
Thu, 16-Apr 20:18 20:55 04:59 dawn 05:35 06:12 35% 09:27
Fri, 17-Apr 20:19 20:57 05:20 dawn 05:32 06:09 26% 10:11
Sat, 18-Apr 20:21 20:59 05:30 06:07 18%
Sun, 19-Apr 20:23 21:01 05:27 06:05 12%
Mon, 20-Apr 20:25 21:03 05:25 06:03 6%
Tue, 21-Apr 20:27 21:05 05:23 06:01 3%
Wed, 22-Apr 20:28 21:07 05:20 05:59 1%
Thu, 23-Apr 20:30 21:09 05:18 05:57 0%
Fri, 24-Apr 20:32 21:11 dusk 22:04 05:16 05:54 2% 14:21
Sat, 25-Apr 20:34 21:13 dusk 23:14 05:13 05:52 5% 15:07
Sun, 26-Apr 20:35 21:15 dusk 00:23 05:11 05:50 10% 15:56
Mon, 27-Apr 20:37 21:17 dusk 01:27 05:09 05:48 17% 16:47
Tue, 28-Apr 20:39 21:19 dusk 02:22 05:07 05:46 26% 17:41
Wed, 29-Apr 20:41 21:21 dusk 03:07 05:04 05:44 35% 18:36
Thu, 30-Apr 20:43 21:23 dusk 03:43 05:02 05:42 50% 19:31
Fri, 01-May 20:44 21:25 dusk 04:11 05:00 05:40 57% 20:26
Sat, 02-May 20:46 21:26 dusk 04:34 04:58 05:38 68% 21:20
Sun, 03-May 20:48 21:28 dusk 04:55 04:56 05:36 78% 22:12 after dusk
Mon, 04-May 20:49 21:30 dusk dawn 04:53 05:34 87% 23:05 all night
Tue, 05-May 20:51 21:32 dusk dawn 04:51 05:33 94% 23:58 all night
Wed, 06-May 20:53 21:34 dusk dawn 04:49 05:31 98% 00:52 all night
Thu, 07-May 20:55 21:36 dusk dawn 04:47 05:29 100% 01:48 all night
Fri, 08-May 20:56 21:38 22:32 dawn 04:45 05:27 98% 02:46 before dawn
Sat, 09-May 20:58 21:40 23:52 dawn 04:43 05:25 94% 03:45 before dawn
Sun, 10-May 21:00 21:42 01:00 dawn 04:41 05:24 88% 04:43 before dawn
Mon, 11-May 21:01 21:44 01:53 dawn 04:39 05:22 80% 05:39 before dawn
Tue, 12-May 21:03 21:46 02:34 dawn 04:37 05:20 71% 06:32
Wed, 13-May 21:04 21:48 03:03 dawn 04:35 05:19 61% 07:22
Thu, 14-May 21:06 21:50 03:26 dawn 04:33 05:17 50% 08:08
Fri, 15-May 21:08 21:52 03:45 dawn 04:32 05:16 42% 08:51
Sat, 16-May 21:09 21:54 04:01 dawn 04:30 05:14 32% 09:33
Sun, 17-May 21:11 21:56 04:15 dawn 04:28 05:13 24% 10:13
Mon, 18-May 21:12 21:57 04:26 05:11 16%
Tue, 19-May 21:14 21:59 04:25 05:10 10%
Wed, 20-May 21:15 22:01 04:23 05:08 5%
Thu, 21-May 21:17 22:03 04:21 05:07 2%
Fri, 22-May 21:18 22:04 04:20 05:06 0%
Sat, 23-May 21:20 22:06 dusk 22:14 04:18 05:05 1% 13:52
Sun, 24-May 21:21 22:08 dusk 23:21 04:17 05:03 3% 14:43
Mon, 25-May 21:23 22:10 dusk 00:20 04:15 05:02 7% 15:37
Tue, 26-May 21:24 22:11 dusk 01:09 04:14 05:01 14% 16:32
Wed, 27-May 21:25 22:13 dusk 01:47 04:13 05:00 22% 17:28
Thu, 28-May 21:27 22:14 dusk 02:17 04:11 04:59 32% 18:22
Fri, 29-May 21:28 22:16 dusk 02:41 04:10 04:58 42% 19:15
Sat, 30-May 21:29 22:17 dusk 03:01 04:09 04:57 50% 20:06
Sun, 31-May 21:30 22:19 dusk 03:19 04:08 04:56 65% 20:57
Mon, 01-Jun 21:31 22:20 dusk 03:37 04:07 04:55 76% 21:47 after dusk
Tue, 02-Jun 21:32 22:21 dusk 03:56 04:06 04:55 85% 22:39 after dusk
Wed, 03-Jun 21:34 22:23 dusk dawn 04:05 04:54 92% 23:33 all night
Thu, 04-Jun 21:35 22:24 dusk dawn 04:04 04:53 97% 00:29 all night
Fri, 05-Jun 21:36 22:25 dusk dawn 04:03 04:53 100% 01:27 all night
Sat, 06-Jun 21:37 22:26 22:40 dawn 04:02 04:52 99% 02:26 before dawn
Sun, 07-Jun 21:37 22:27 23:42 dawn 04:02 04:52 96% 03:25 before dawn
Mon, 08-Jun 21:38 22:29 00:29 dawn 04:01 04:51 91% 04:21 before dawn
Tue, 09-Jun 21:39 22:30 01:04 dawn 04:00 04:51 84% 05:13 before dawn
Wed, 10-Jun 21:40 22:30 01:30 dawn 04:00 04:50 76% 06:01 before dawn
Thu, 11-Jun 21:41 22:31 01:51 dawn 03:59 04:50 67% 06:47
Fri, 12-Jun 21:41 22:32 02:08 dawn 03:59 04:50 58% 07:29
Sat, 13-Jun 21:42 22:33 02:22 dawn 03:59 04:50 50% 08:10
Sun, 14-Jun 21:42 22:33 02:36 dawn 03:59 04:50 39% 08:51
Mon, 15-Jun 21:43 22:34 02:50 dawn 03:58 04:50 30% 09:31
Tue, 16-Jun 21:43 22:35 03:06 dawn 03:58 04:50 22% 10:14
Wed, 17-Jun 21:44 22:35 03:24 dawn 03:58 04:50 14% 10:58

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: 0600 on 2020-02-19 for Snowdonia

Today

Rain turning heavy and persistent. Strengthening winds.

Summary Cloud thickening and lowering during the morning with outbreaks of rain and drizzle, briefly falling as sleet and snow above 800m, before freezing levels rise. Rain and drizzle becoming more persistent and heavy at all levels during the afternoon as milder air pushes in, and continuing into the evening.
Chance of Cloud free tops 60% overnight and early morning, becoming 30% by midday with occasional or extensive cloud around 600m, becoming Nil by dusk, with cloud at 600m extending to all hills, and down to 400m during rain, especially in the west.
Ground conditions Area - Snowdon Date - 18 February 2020 Time - 14.00pm Snow Above - 750 metres Report By - Snowdon Warden Route Taken PYG track Conditions Isolated patches of snow on path. Light dusting of snow. Depth of snow increases with altitude. Steep bank of snow at top of path. Sections of ice on paths. There is firm section of snow at the top of the zig zags near Bwlch Glas. Essential Kit The following is a list of additional kit required based on the current conditions. Standard winter kit required. Ice axe and crampons recommended. Additional Information It gets dark at 17.30
Visibility Views of distant hills becoming increasingly hazy through the morning, and poor by the afternoon, especially during any rain or drizzle. Very poor visibility likely across all tops as cloud thickens.
Blizzards: Low Likelihood
Storm Force Winds: Low Likelihood
Gales: High Likelihood
Severe Chill Effect: Medium Likelihood
Poor Visibility: Medium Likelihood
Heavy Persistent Rain: High Likelihood
060708 091011 121314 151617 181920 212223
Weather Light snow Heavy snow Sleet Heavy Rain Heavy Rain Heavy Rain
Rain 10% 50% 70% 90% 80% 70%
Temp (tops) -2 -1 1 3 3 4
Wind (tops) 30 27 37 43 45 45
Freezing Level 500m 700m 1100m 1400m 2200m 2100m
Day 1

Heavy rain during the early hours will increasingly fall as snow above 600m as freezing levels fall through the morning. Blizzard conditions possible with frozen routes likely on the tops. Rain clearing to sunny spells and occasional showers from midday, but feeling cold. Showers falling as snow above 400m, with sleet and hail to lower levels.

Ice Above summits, falling to 600m by dawn and 400m by dusk.
Visibility Limited views of distant hills at first, with summits often obscured. Improving by the afternoon, with excellent views outside of showers, but falling to poor during showers, and potentially near zero with blizzard conditions possible.
Wind Southwesterly 40mph gusting 60mph becoming westerly 35-40mph gusting 45-50mph as rain clears.
Temp Plus 4 Celsius, falling to Minus 1 Celsius around dawn, then Minus 3 Celsius by dusk. (at high level)
Day 2

Dry start, but freezing levels gradually rising above the tops as cloud, rain and strong winds move in from the southwest. Storm force winds possible by the afternoon, with summits likely obscured.

Day 3

Winds only gradually easing, with freezing levels also falling to just below the highest summits, around 900m by the afternoon. Remaining rather cloudy, with further outbreaks of light rain and summit snow.

Day 4

Another cloudy, and often wet day, with further outbreaks of rain and strong winds, likely severe gales. Freezing levels likely rising above the summits for much of the day

Data: Met Office