Mountain weather
Eryri / Snowdonia
Confidence
Moderate for rain and cloud detail, becoming low for the weekend.
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This eveningSunrise:Sunset:
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Thu 6 AugSunrise:Sunset:
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Fri 7 AugSunrise:Sunset:
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Further outlook
This evening forecast
Showers easing with clear intervals.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Strong Sunlight
Mountain weather forecast
Largely dry with sunny spells and feeling fresher.
|
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 |
30%
|
30%
|
20%
|
20%
|
20%
|
10%
|
10%
|
10%
|
Wind direction and speed
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | W 32mph knots
W
32mph |
NW 30mph knots
NW
30mph |
W 26mph knots
W
26mph |
W 21mph knots
W
21mph |
W 19mph knots
W
19mph |
W 16mph knots
W
16mph |
W 11mph knots
W
11mph |
SW 16mph knots
SW
16mph |
|
600m
|
600m | NW 20mph knots
NW
20mph |
NW 19mph knots
NW
19mph |
NW 16mph knots
NW
16mph |
NW 16mph knots
NW
16mph |
W 15mph knots
W
15mph |
W 13mph knots
W
13mph |
W 9mph knots
W
9mph |
S 10mph knots
S
10mph |
|
300m
|
300m | NW 13mph knots
NW
13mph |
NW 12mph knots
NW
12mph |
W 11mph knots
W
11mph |
NW 12mph knots
NW
12mph |
W 12mph knots
W
12mph |
W 10mph knots
W
10mph |
W 7mph knots
W
7mph |
S 7mph knots
S
7mph |
|
Valley
|
Valley | W 13mph knots
W
13mph |
NW 12mph knots
NW
12mph |
W 11mph knots
W
11mph |
NW 12mph knots
NW
12mph |
W 12mph knots
W
12mph |
W 10mph knots
W
10mph |
W 7mph knots
W
7mph |
S 6mph knots
S
6mph |
Wind gust
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 38mph | 36mph | 31mph | 27mph | 25mph | 20mph | 15mph | 22mph |
|
600m
|
600m | 25mph | 24mph | 21mph | 21mph | 20mph | 17mph | 13mph | 15mph |
|
300m
|
300m | 24mph | 22mph | 19mph | 19mph | 19mph | 16mph | 11mph | 14mph |
|
Valley
|
Valley | 24mph | 22mph | 19mph | 20mph | 19mph | 16mph | 11mph | 14mph |
|
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 | 6 degrees Celsius 6°C | 6 degrees Celsius 6°C | 7 degrees Celsius 7°C | 8 degrees Celsius 8°C | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C |
|
600m
|
600m | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 9 degrees Celsius 9°C | 10 degrees Celsius 10°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 | 11 degrees Celsius 11°C | 12 degrees Celsius 12°C | 13 degrees Celsius 13°C | 14 degrees Celsius 14°C | 14 degrees Celsius 14°C | 12 degrees Celsius 12°C |
|
Valley
|
Valley | 13 degrees Celsius 13°C | 12 degrees Celsius 12°C | 13 degrees Celsius 13°C | 14 degrees Celsius 14°C | 15 degrees Celsius 15°C | 16 degrees Celsius 16°C | 16 degrees Celsius 16°C | 14 degrees Celsius 14°C |
| Freezing Level | Freezing Level |
1800m
|
1900m
|
1900m
|
1800m
|
1900m
|
1900m
|
2000m
|
2000m
|
|
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 | 0 degrees Celsius 0°C | 1 degrees Celsius 1°C | 2 degrees Celsius 2°C | 3 degrees Celsius 3°C | 5 degrees Celsius 5°C | 6 degrees Celsius 6°C | 4 degrees Celsius 4°C |
|
600m
|
600m | 5 degrees Celsius 5°C | 5 degrees Celsius 5°C | 5 degrees Celsius 5°C | 6 degrees Celsius 6°C | 7 degrees Celsius 7°C | 9 degrees Celsius 9°C | 10 degrees Celsius 10°C | 8 degrees Celsius 8°C |
|
300m
|
300m | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C | 9 degrees Celsius 9°C | 10 degrees Celsius 10°C | 11 degrees Celsius 11°C | 12 degrees Celsius 12°C | 13 degrees Celsius 13°C | 11 degrees Celsius 11°C |
|
Valley
|
Valley | 11 degrees Celsius 11°C | 10 degrees Celsius 10°C | 11 degrees Celsius 11°C | 11 degrees Celsius 11°C | 13 degrees Celsius 13°C | 14 degrees Celsius 14°C | 14 degrees Celsius 14°C | 13 degrees Celsius 13°C |
| Freezing Level | Freezing Level |
1800m
|
1900m
|
1900m
|
1800m
|
1900m
|
1900m
|
2000m
|
2000m
|
Additional weather information
Meteorologist's view
Temperatures not as high as recent days so an extra layer may be required. UV levels still high despite any cloud cover.
Weather
A chance of some early showers, but these generally easing by mid-morning. Thereafter sunny spells with winds turning lighter through the day. Feeling fresher.
Chance of cloud-free hill tops
60% becoming over 90%.
Low cloud and visibility
Patches of cloud, mostly above 850m, but perhaps more extensive above 750-800m in the west until late morning. Very poor visibility in the cloud with foggy conditions, but beneath the cloud visibility will be excellent with superb air clarity. Brief deteriorations to 5-8km, even at valley level, during any showers.
Ground conditions
Please see - https://yrwyddfa.live/
Mountain weather information
Weather
A similar day to Thursday but with a better prospect of lengthier sunny spells and only a very low chance of a light shower.
Chance of cloud-free hill tops
Over 90%.
Maximum wind speed expected
South-westerly 10-15 mph gusting 20-25 mph.
Temperature
- At 800m Plus 8 Celsius rising to plus 12 Celsius.
- Valley Plus 11 Celsius rising to plus 17 Celsius,
- Freezing level Above summits.
Low cloud and visibility
Early mist otherwise cloud above summits with very good visibilities.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Sat 8 Aug
Staying mainly dry with a mixture of cloud and sunny intervals. A chance of rain by the evening. Southwesterly winds freshening.
Sun 9 Aug
A more changeable day is currently expected with the chance of a few showers but there is uncertainty regarding how wet it will be. Sunny spells are still possible at times. Moderate to fresh westerly winds.
Mon 10 Aug
Uncertainty into next week. Showers clearing first thing then brighter spells by the afternoon. Light to moderate northwesterly winds.
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.