Mountain weather
Eryri / Snowdonia
Confidence
High confidence for mainly dry weather until the end of this period. Some uncertainty in the strength of the easterly winds from Tuesday onwards.
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Sat 7 NovSunrise:Sunset:
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Sun 8 NovSunrise:Sunset:
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Further outlook
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Severe Chill Effect
Mountain weather forecast
Dry with long sunny spells. Cold and breezy on the tops.
|
Time
|
Time |
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 |
10%
|
10%
|
10%
|
10%
|
20%
|
20%
|
Wind direction and speed
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
900m
|
900m | SE 3mph knots
SE
3mph |
S 4mph knots
S
4mph |
SW 3mph knots
SW
3mph |
W 5mph knots
W
5mph |
SW 4mph knots
SW
4mph |
S 5mph knots
S
5mph |
|
600m
|
600m | S 5mph knots
S
5mph |
S 4mph knots
S
4mph |
SW 4mph knots
SW
4mph |
SW 5mph knots
SW
5mph |
S 5mph knots
S
5mph |
S 4mph knots
S
4mph |
|
300m
|
300m | S 3mph knots
S
3mph |
SE 3mph knots
SE
3mph |
SW 3mph knots
SW
3mph |
W 4mph knots
W
4mph |
S 3mph knots
S
3mph |
SE 3mph knots
SE
3mph |
|
Valley
|
Valley | S 3mph knots
S
3mph |
S 3mph knots
S
3mph |
S 3mph knots
S
3mph |
W 3mph knots
W
3mph |
S 3mph knots
S
3mph |
S 3mph knots
S
3mph |
Wind gust
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
900m
|
900m | 3mph | 5mph | 5mph | 7mph | 5mph | 6mph |
|
600m
|
600m | 6mph | 6mph | 6mph | 7mph | 6mph | 6mph |
|
300m
|
300m | 4mph | 5mph | 5mph | 6mph | 5mph | 5mph |
|
Valley
|
Valley | 5mph | 5mph | 5mph | 6mph | 5mph | 6mph |
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
900m
|
900m | 4 degrees Celsius 4°C | 3 degrees Celsius 3°C | 4 degrees Celsius 4°C | 4 degrees Celsius 4°C | 3 degrees Celsius 3°C | 2 degrees Celsius 2°C |
|
600m
|
600m | 5 degrees Celsius 5°C | 5 degrees Celsius 5°C | 6 degrees Celsius 6°C | 6 degrees Celsius 6°C | 5 degrees Celsius 5°C | 4 degrees Celsius 4°C |
|
300m
|
300m | 7 degrees Celsius 7°C | 7 degrees Celsius 7°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 7 degrees Celsius 7°C | 6 degrees Celsius 6°C |
|
Valley
|
Valley | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C |
| Freezing Level | Freezing Level |
1300m
|
1400m
|
1400m
|
1400m
|
1400m
|
1400m
|
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
900m
|
900m | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C | 1 degrees Celsius 1°C | 0 degrees Celsius 0°C |
|
600m
|
600m | 4 degrees Celsius 4°C | 3 degrees Celsius 3°C | 4 degrees Celsius 4°C | 4 degrees Celsius 4°C | 3 degrees Celsius 3°C | 2 degrees Celsius 2°C |
|
300m
|
300m | 6 degrees Celsius 6°C | 6 degrees Celsius 6°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 6 degrees Celsius 6°C | 5 degrees Celsius 5°C |
|
Valley
|
Valley | 7 degrees Celsius 7°C | 8 degrees Celsius 8°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 7 degrees Celsius 7°C | 7 degrees Celsius 7°C |
| Freezing Level | Freezing Level |
1300m
|
1400m
|
1400m
|
1400m
|
1400m
|
1400m
|
Additional weather information
Meteorologist's view
A bright and clear day but feeling cold on the tops so warm and windproof clothing will be required.
Weather
Patchy cloud but also sunny spells, especially this morning. Staying mainly dry, although isolated light showers are possible, particularly this evening.
Chance of cloud-free hill tops
70%.
Low cloud and visibility
Generally hazy to good visibility with areas of cloud above 700m, especially this evening. Poor or very poor visibility with the hill fog.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Weather
A mixture of clear or sunny spells and isolated light showers, with any overnight valley mist and fog slowly lifting and clearing through the morning. Feeling cold with on the tops.
Chance of cloud-free hill tops
70%.
Maximum wind speed expected
Southerly 10-15 mph.
Temperature
- At 800m Plus 3 or 4C.
- Valley Plus 0C rising to 11C.
- Freezing level Above summits.
Low cloud and visibility
Mostly good visibility. Brief reductions as showers pass through with patchy cloud above 700m.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Mon 9 Nov
Dry with variable cloud and sunny spells. Feeling cold with fresh southeasterly winds at height. Freezing level above summits.
Tue 10 Nov
Dry with sunny spells, rain arriving overnight. Feeling cold with strong southeasterly winds at height. Freezing level above summits.
Wed 11 Nov
Cloudy with spells of rain. Hill fog likely. Southeasterly winds probably easing. Freezing level above summits.
Mountain weather information
Mon 9 Nov
Dry with variable cloud and sunny spells. Feeling cold with fresh southeasterly winds at height. Freezing level above summits.
Tue 10 Nov
Dry with sunny spells, rain arriving overnight. Feeling cold with strong southeasterly winds at height. Freezing level above summits.
Wed 11 Nov
Cloudy with spells of rain. Hill fog likely. Southeasterly winds probably easing. Freezing level above summits.
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.