Mountain weather
Eryri / Snowdonia
Confidence
High confidence for mainly dry weather over this period.
-
Thu 12 NovSunrise:Sunset:
-
Fri 13 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 28mph knots
NE
28mph |
N 25mph knots
N
25mph |
N 25mph knots
N
25mph |
NE 23mph knots
NE
23mph |
NE 19mph knots
NE
19mph |
|
600m
|
600m | NE 14mph knots
NE
14mph |
NE 14mph knots
NE
14mph |
N 19mph knots
N
19mph |
N 17mph knots
N
17mph |
NE 11mph knots
NE
11mph |
NE 10mph knots
NE
10mph |
|
300m
|
300m | NE 6mph knots
NE
6mph |
N 6mph knots
N
6mph |
N 13mph knots
N
13mph |
N 11mph knots
N
11mph |
NE 4mph knots
NE
4mph |
NE 4mph knots
NE
4mph |
|
Valley
|
Valley | NE 6mph knots
NE
6mph |
N 6mph knots
N
6mph |
N 13mph knots
N
13mph |
N 11mph knots
N
11mph |
NE 5mph knots
NE
5mph |
NE 5mph knots
NE
5mph |
Wind gust
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
900m
|
900m | 31mph | 33mph | 32mph | 31mph | 29mph | 24mph |
|
600m
|
600m | 17mph | 18mph | 25mph | 22mph | 15mph | 13mph |
|
300m
|
300m | 15mph | 16mph | 23mph | 20mph | 13mph | 11mph |
|
Valley
|
Valley | 15mph | 16mph | 23mph | 20mph | 14mph | 12mph |
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
900m
|
900m | 0 degrees Celsius 0°C | -1 degrees Celsius -1°C | 0 degrees Celsius 0°C | 0 degrees Celsius 0°C | 0 degrees Celsius 0°C | -1 degrees Celsius -1°C |
|
600m
|
600m | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C | 3 degrees Celsius 3°C | 3 degrees Celsius 3°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C |
|
300m
|
300m | 5 degrees Celsius 5°C | 4 degrees Celsius 4°C | 6 degrees Celsius 6°C | 6 degrees Celsius 6°C | 4 degrees Celsius 4°C | 4 degrees Celsius 4°C |
|
Valley
|
Valley | 7 degrees Celsius 7°C | 6 degrees Celsius 6°C | 7 degrees Celsius 7°C | 7 degrees Celsius 7°C | 6 degrees Celsius 6°C | 6 degrees Celsius 6°C |
| Freezing Level | Freezing Level |
800m
|
500m
|
600m
|
700m
|
600m
|
600m
|
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
900m
|
900m | -8 degrees Celsius -8°C | -9 degrees Celsius -9°C | -8 degrees Celsius -8°C | -8 degrees Celsius -8°C | -8 degrees Celsius -8°C | -7 degrees Celsius -7°C |
|
600m
|
600m | -2 degrees Celsius -2°C | -4 degrees Celsius -4°C | -3 degrees Celsius -3°C | -3 degrees Celsius -3°C | -2 degrees Celsius -2°C | -2 degrees Celsius -2°C |
|
300m
|
300m | 3 degrees Celsius 3°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C | 3 degrees Celsius 3°C | 2 degrees Celsius 2°C |
|
Valley
|
Valley | 5 degrees Celsius 5°C | 4 degrees Celsius 4°C | 4 degrees Celsius 4°C | 4 degrees Celsius 4°C | 4 degrees Celsius 4°C | 4 degrees Celsius 4°C |
| Freezing Level | Freezing Level |
800m
|
500m
|
600m
|
700m
|
600m
|
600m
|
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 sunny morning then some cloud developing in the afternoon but still staying dry and bright. Scattered light showers will develop in the evening.
Chance of cloud-free hill tops
60% becoming close to 100% from mid-morning.
Low cloud and visibility
Excellent visibility with no cloud on the hills past mid-morning.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Weather
A mixture of clear or sunny spells. The odd light shower is possible towards the northwest of the Park. 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
70%.
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
Sat 14 Nov
Dry with sunny spells. Feeling cold with strong easterly winds at height. Freezing level above summits.
Sun 15 Nov
Dry with sunny spells. Feeling cold with strong easterly winds at height. Freezing level above summits.
Mon 16 Nov
Mostly dry and bright. Southeasterly winds easing. Freezing level above summits.
Mountain weather information
Sat 14 Nov
Dry with sunny spells. Feeling cold with strong easterly winds at height. Freezing level above summits.
Sun 15 Nov
Dry with sunny spells. Feeling cold with strong easterly winds at height. Freezing level above summits.
Mon 16 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.