Mountain weather
Eryri / Snowdonia
Confidence
High for general unsettled theme into next week. Moderate confidence for rain clearing and how much cloud will lift.
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This eveningSunrise:Sunset:
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Sun 7 JunSunrise:Sunset:
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Mon 8 JunSunrise:Sunset:
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Further outlook
This evening forecast
Rain and low cloud for the first half of the evening which will clear and lift through the night.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Poor Visibility
Thunderstorms
Storm Force Winds
Heavy Persistent Rain
Mountain weather forecast
Unsettled with low cloud and heavy rain into the afternoon.
|
Time
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Time |
00:00
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03:00
|
06:00
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09:00
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12:00
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15:00
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18:00
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21:00
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|---|---|---|---|---|---|---|---|---|---|
|
Weather
(at 800m)
|
Weather symbols | ||||||||
|
Chance of
precipitation (at 800m)
|
Chance of precipitation |
10%
|
30%
|
50%
|
70%
|
70%
|
90%
|
90%
|
≥95%
|
Wind direction and speed
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | SW 31mph knots
SW
31mph |
SW 32mph knots
SW
32mph |
SW 31mph knots
SW
31mph |
SW 37mph knots
SW
37mph |
SW 38mph knots
SW
38mph |
SW 38mph knots
SW
38mph |
SW 38mph knots
SW
38mph |
SW 36mph knots
SW
36mph |
|
600m
|
600m | SW 18mph knots
SW
18mph |
SW 22mph knots
SW
22mph |
SW 22mph knots
SW
22mph |
SW 28mph knots
SW
28mph |
SW 29mph knots
SW
29mph |
SW 28mph knots
SW
28mph |
S 27mph knots
S
27mph |
SW 26mph knots
SW
26mph |
|
300m
|
300m | SW 11mph knots
SW
11mph |
SW 14mph knots
SW
14mph |
SW 14mph knots
SW
14mph |
SW 19mph knots
SW
19mph |
SW 20mph knots
SW
20mph |
S 19mph knots
S
19mph |
S 19mph knots
S
19mph |
S 17mph knots
S
17mph |
|
Valley
|
Valley | SW 11mph knots
SW
11mph |
SW 13mph knots
SW
13mph |
SW 13mph knots
SW
13mph |
SW 19mph knots
SW
19mph |
S 19mph knots
S
19mph |
S 19mph knots
S
19mph |
S 18mph knots
S
18mph |
S 16mph knots
S
16mph |
Wind gust
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 37mph | 39mph | 39mph | 47mph | 49mph | 49mph | 48mph | 46mph |
|
600m
|
600m | 24mph | 29mph | 29mph | 38mph | 39mph | 39mph | 37mph | 35mph |
|
300m
|
300m | 22mph | 26mph | 26mph | 34mph | 35mph | 34mph | 33mph | 31mph |
|
Valley
|
Valley | 22mph | 25mph | 25mph | 32mph | 34mph | 33mph | 32mph | 29mph |
|
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 | 7 degrees Celsius 7°C | 7 degrees Celsius 7°C | 8 degrees Celsius 8°C | 7 degrees Celsius 7°C | 7 degrees Celsius 7°C | 8 degrees Celsius 8°C |
|
600m
|
600m | 8 degrees Celsius 8°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 | 10 degrees Celsius 10°C |
|
300m
|
300m | 10 degrees Celsius 10°C | 11 degrees Celsius 11°C | 11 degrees Celsius 11°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C |
|
Valley
|
Valley | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 13 degrees Celsius 13°C | 14 degrees Celsius 14°C | 14 degrees Celsius 14°C | 14 degrees Celsius 14°C | 13 degrees Celsius 13°C | 13 degrees Celsius 13°C |
| Freezing Level | Freezing Level |
2200m
|
2200m
|
1700m
|
2100m
|
2200m
|
2200m
|
2100m
|
2300m
|
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 0 degrees Celsius 0°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C | 1 degrees Celsius 1°C | 2 degrees Celsius 2°C | 1 degrees Celsius 1°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C |
|
600m
|
600m | 4 degrees Celsius 4°C | 5 degrees Celsius 5°C | 5 degrees Celsius 5°C | 5 degrees Celsius 5°C | 5 degrees Celsius 5°C | 5 degrees Celsius 5°C | 5 degrees Celsius 5°C | 5 degrees Celsius 5°C |
|
300m
|
300m | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C |
|
Valley
|
Valley | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C |
| Freezing Level | Freezing Level |
2200m
|
2200m
|
1700m
|
2100m
|
2200m
|
2200m
|
2100m
|
2300m
|
Additional weather information
Meteorologist's view
Waterproofs will be advised with sturdy footwear throughout. Ground conditions likely to be slippery with the wet conditions.
Weather
Strong southwesterly winds, with light rain to begin with. Rain turns heavier through the afternoon, becoming its heaviest by the evening. This will be showery in nature.
Chance of cloud-free hill tops
West: 40% becoming 10% or less by midday. East: 70% becoming 30% from mid-afternoon.
Low cloud and visibility
Periods of cloud above 400-600m, patchier and mostly above 600-700m in the east. Becoming widespread above 400-600m through the afternoon. Occasionally good in drier periods but often moderate to poor in rain. Very poor in drizzle and hill fog.
Ground conditions
Please see - https://yrwyddfa.live/
Mountain weather information
Weather
Waterproofs will be advised with sturdy footwear throughout. Ground conditions likely to be slippery with the wet conditions.
Chance of cloud-free hill tops
40% rising to 80% by the afternoon.
Maximum wind speed expected
Westerly 20-25 mph. Increasing to 25-35mph later.
Temperature
- At 800m Plus 8 Celsius.
- Valley Plus 13 Celsius.
- Freezing level Above all summits.
Low cloud and visibility
Cloud bases below 300m during the morning with poor visibility in heavy rain and fog. Cloud lifting to above 800m by midday as visibility improves. Isolated showers will reduce visibility to moderate at times.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Tue 9 Jun
A day of sunny spells and showers, these heavy at times with a risk of thunderstorms in places. Fresh to strong westerly winds and feeling cool.
Wed 10 Jun
A similar day to on Tuesday but winds possibly stronger with a risk of summit gales.
Thu 11 Jun
Turning much wetter on Thursday with possible gales at lower levels.
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.