Mountain weather
Eryri / Snowdonia
Confidence
High confidence.
-
This eveningSunrise:Sunset:
-
Sat 30 MaySunrise:Sunset:
-
Sun 31 MaySunrise:Sunset:
-
Further outlook
This evening forecast
Dry this evening with some late sunshine, but skies clouding over after sunset.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Strong Sunlight
Poor Visibility
Mountain weather forecast
Dry and largely cloudy with some sunny breaks at times. Light winds.
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
Weather
(at 800m)
|
Weather symbols | ||||||||
|
Chance of
precipitation (at 800m)
|
Chance of precipitation |
<5%
|
<5%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
20%
|
Wind direction and speed
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | S 16mph knots
S
16mph |
S 13mph knots
S
13mph |
S 14mph knots
S
14mph |
S 13mph knots
S
13mph |
SW 14mph knots
SW
14mph |
SW 17mph knots
SW
17mph |
SW 19mph knots
SW
19mph |
S 23mph knots
S
23mph |
|
600m
|
600m | S 14mph knots
S
14mph |
S 13mph knots
S
13mph |
S 14mph knots
S
14mph |
S 14mph knots
S
14mph |
SW 14mph knots
SW
14mph |
SW 16mph knots
SW
16mph |
SW 17mph knots
SW
17mph |
S 19mph knots
S
19mph |
|
300m
|
300m | S 10mph knots
S
10mph |
S 9mph knots
S
9mph |
S 9mph knots
S
9mph |
S 10mph knots
S
10mph |
SW 11mph knots
SW
11mph |
SW 11mph knots
SW
11mph |
S 11mph knots
S
11mph |
S 12mph knots
S
12mph |
|
Valley
|
Valley | S 10mph knots
S
10mph |
S 9mph knots
S
9mph |
S 9mph knots
S
9mph |
S 10mph knots
S
10mph |
SW 10mph knots
SW
10mph |
SW 10mph knots
SW
10mph |
S 11mph knots
S
11mph |
S 12mph knots
S
12mph |
Wind gust
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 19mph | 16mph | 18mph | 17mph | 18mph | 22mph | 23mph | 28mph |
|
600m
|
600m | 18mph | 17mph | 18mph | 18mph | 19mph | 21mph | 22mph | 24mph |
|
300m
|
300m | 17mph | 17mph | 17mph | 15mph | 16mph | 17mph | 18mph | 22mph |
|
Valley
|
Valley | 18mph | 17mph | 17mph | 15mph | 15mph | 16mph | 17mph | 22mph |
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C |
|
600m
|
600m | 11 degrees Celsius 11°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 11 degrees Celsius 11°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 11 degrees Celsius 11°C | 10 degrees Celsius 10°C |
|
300m
|
300m | 12 degrees Celsius 12°C | 11 degrees Celsius 11°C | 12 degrees Celsius 12°C | 14 degrees Celsius 14°C | 15 degrees Celsius 15°C | 15 degrees Celsius 15°C | 13 degrees Celsius 13°C | 12 degrees Celsius 12°C |
|
Valley
|
Valley | 13 degrees Celsius 13°C | 12 degrees Celsius 12°C | 13 degrees Celsius 13°C | 15 degrees Celsius 15°C | 17 degrees Celsius 17°C | 17 degrees Celsius 17°C | 15 degrees Celsius 15°C | 13 degrees Celsius 13°C |
| Freezing Level | Freezing Level |
2400m
|
2500m
|
2400m
|
2500m
|
2900m
|
2900m
|
2800m
|
2800m
|
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 6 degrees Celsius 6°C | 7 degrees Celsius 7°C | 6 degrees Celsius 6°C | 6 degrees Celsius 6°C | 8 degrees Celsius 8°C | 7 degrees Celsius 7°C | 5 degrees Celsius 5°C | 4 degrees Celsius 4°C |
|
600m
|
600m | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 7 degrees Celsius 7°C | 8 degrees Celsius 8°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 8 degrees Celsius 8°C | 7 degrees Celsius 7°C |
|
300m
|
300m | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 12 degrees Celsius 12°C | 13 degrees Celsius 13°C | 13 degrees Celsius 13°C | 11 degrees Celsius 11°C | 10 degrees Celsius 10°C |
|
Valley
|
Valley | 11 degrees Celsius 11°C | 10 degrees Celsius 10°C | 11 degrees Celsius 11°C | 14 degrees Celsius 14°C | 15 degrees Celsius 15°C | 15 degrees Celsius 15°C | 13 degrees Celsius 13°C | 11 degrees Celsius 11°C |
| Freezing Level | Freezing Level |
2400m
|
2500m
|
2400m
|
2500m
|
2900m
|
2900m
|
2800m
|
2800m
|
Additional weather information
Meteorologist's view
UV levels will be moderate to high in the sunny spells, sun protection is advised.
Weather
Some early low cloud perhaps possible with mist around southwest facing slopes. This quickly clearing to leave a dry day with increasing sunny spells into the afternoon and light winds.
Chance of cloud-free hill tops
80%, increasing to 100% through the morning.
Low cloud and visibility
Cloud bases around 500m at times in the early hours, but lifting above summits early in the morning.
Ground conditions
Please see - https://yrwyddfa.live/
Mountain weather information
Weather
Low cloud will shroud the hills at first, before lifting through the morning. Scattered showers will develop through the morning and into the afternoon, with the occasional heavy downpour possible. Sunny spells likely between showers. Showers then easing in the evening with clearing skies.
Chance of cloud-free hill tops
40% in the early hours, then 100% from early morning.
Maximum wind speed expected
Southwesterly 10mph gusting 25mph
Temperature
- At 800m Plus 7 Celsius rising to plus 9 Celsius.
- Valley Plus 11 Celsius, rising to plus 18 Celsius.
- Freezing level Above summits.
Low cloud and visibility
Cloud bases around 400m in the early hours, lifting to above summits through the morning.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Mon 1 Jun
Cloudy, breezy with heavy rain to start. Some afternoon sunshine between the showers. Freezing level above summits throughout.
Tue 2 Jun
Sunshine and heavy showers with a moderate southwesterly breeze. A low risk of thunder in the heavy showers during the afternoon.
Wed 3 Jun
A band of rain possibly moving through during the morning, followed by some heavy showers in the afternoon.
Summit specific forecast
The Eryri (Snowdonia) mountains are made up of 90 mountain peaks including the tallest mountain in Wales, Yr Wyddfa (Snowdon), standing at 1,085 metres.