Mountain weather
Eryri / Snowdonia
Confidence
High confidence for mainly dry weather over this period. Some uncertainty in the strength of the easterly winds from Tuesday onwards.
-
Mon 2 NovSunrise:Sunset:
-
Tue 3 NovSunrise:Sunset:
-
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%
|
10%
|
10%
|
Wind direction and speed
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
900m
|
900m | NE 27mph knots
NE
27mph |
NE 23mph knots
NE
23mph |
NE 22mph knots
NE
22mph |
NE 24mph knots
NE
24mph |
NE 25mph knots
NE
25mph |
NE 24mph knots
NE
24mph |
|
600m
|
600m | SE 9mph knots
SE
9mph |
N 9mph knots
N
9mph |
NE 10mph knots
NE
10mph |
NE 9mph knots
NE
9mph |
N 13mph knots
N
13mph |
N 12mph knots
N
12mph |
|
300m
|
300m | S 5mph knots
S
5mph |
SE 4mph knots
SE
4mph |
NE 6mph knots
NE
6mph |
N 5mph knots
N
5mph |
N 6mph knots
N
6mph |
NW 7mph knots
NW
7mph |
|
Valley
|
Valley | S 4mph knots
S
4mph |
SE 4mph knots
SE
4mph |
NE 6mph knots
NE
6mph |
N 5mph knots
N
5mph |
N 6mph knots
N
6mph |
NW 6mph knots
NW
6mph |
Wind gust
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
900m
|
900m | 33mph | 28mph | 28mph | 30mph | 30mph | 29mph |
|
600m
|
600m | 12mph | 12mph | 14mph | 13mph | 18mph | 16mph |
|
300m
|
300m | 7mph | 10mph | 13mph | 11mph | 12mph | 11mph |
|
Valley
|
Valley | 6mph | 9mph | 13mph | 10mph | 11mph | 10mph |
|
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 | 3 degrees Celsius 3°C | 3 degrees Celsius 3°C | 3 degrees Celsius 3°C | 3 degrees Celsius 3°C |
|
600m
|
600m | 4 degrees Celsius 4°C | 5 degrees Celsius 5°C | 6 degrees Celsius 6°C | 6 degrees Celsius 6°C | 5 degrees Celsius 5°C | 6 degrees Celsius 6°C |
|
300m
|
300m | 7 degrees Celsius 7°C | 7 degrees Celsius 7°C | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C |
|
Valley
|
Valley | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C |
| Freezing Level | Freezing Level |
1200m
|
1200m
|
1300m
|
1300m
|
1400m
|
1400m
|
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
900m
|
900m | -5 degrees Celsius -5°C | -4 degrees Celsius -4°C | -3 degrees Celsius -3°C | -3 degrees Celsius -3°C | -3 degrees Celsius -3°C | -3 degrees Celsius -3°C |
|
600m
|
600m | 1 degrees Celsius 1°C | 1 degrees Celsius 1°C | 3 degrees Celsius 3°C | 3 degrees Celsius 3°C | 1 degrees Celsius 1°C | 2 degrees Celsius 2°C |
|
300m
|
300m | 5 degrees Celsius 5°C | 6 degrees Celsius 6°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 6 degrees Celsius 6°C | 6 degrees Celsius 6°C |
|
Valley
|
Valley | 6 degrees Celsius 6°C | 8 degrees Celsius 8°C | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C | 7 degrees Celsius 7°C | 8 degrees Celsius 8°C |
| Freezing Level | Freezing Level |
1200m
|
1200m
|
1300m
|
1300m
|
1400m
|
1400m
|
Additional weather information
Meteorologist's view
A bright and clear day but feeling very cold on the tops in the strong winds so warm and windproof clothing will be required.
Weather
A mostly bright or sunny morning then cloud developing in the afternoon but still staying mostly dry and bright.
Chance of cloud-free hill tops
100%, becoming 60% in evening.
Low cloud and visibility
Excellent visibility with no cloud on the hills during the day. Some patchy fog developing above 700m late in the evening.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Weather
A mixture of clear or bright spells and scattered light showers. Still a decent amount of dry weather between the showers. Feeling cold with strong easterly winds on the tops.
Chance of cloud-free hill tops
80%.
Maximum wind speed expected
Easterly 20 to 25mph, gusts 30mph.
Temperature
- At 800m Plus 3 or 4C.
- Valley Plus 5C rising to 10C.
- 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
Wed 4 Nov
Dry with sunny spells. Feeling cold with strong easterly winds at height. Freezing level above summits.
Thu 5 Nov
Dry with sunny spells. Feeling cold with strong easterly winds at height. Freezing level above summits.
Fri 6 Nov
Mostly dry and bright. Southeasterly winds easing. Freezing level above summits.
Mountain weather information
Wed 4 Nov
Dry with sunny spells. Feeling cold with strong easterly winds at height. Freezing level above summits.
Thu 5 Nov
Dry with sunny spells. Feeling cold with strong easterly winds at height. Freezing level above summits.
Fri 6 Nov
Mostly dry and bright. Southeasterly winds 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.