Mountain weather
Eryri / Snowdonia
Confidence
High confidence.
-
This eveningSunrise:Sunset:
-
Wed 3 JunSunrise:Sunset:
-
Thu 4 JunSunrise:Sunset:
-
Further outlook
This evening forecast
Showers gradually easing this evening with clear spells forming, although the odd shower is still possible.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Heavy Persistent Rain
Poor Visibility
Thunderstorms
Gales
Mountain weather forecast
Heavy rain followed by scattered blustery showers.
|
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%
|
90%
|
90%
|
90%
|
50%
|
50%
|
50%
|
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 23mph knots
W
23mph |
SW 23mph knots
SW
23mph |
SW 31mph knots
SW
31mph |
S 41mph knots
S
41mph |
SW 37mph knots
SW
37mph |
SW 42mph knots
SW
42mph |
SW 41mph knots
SW
41mph |
SW 40mph knots
SW
40mph |
|
600m
|
600m | W 16mph knots
W
16mph |
SW 15mph knots
SW
15mph |
S 22mph knots
S
22mph |
S 29mph knots
S
29mph |
SW 28mph knots
SW
28mph |
SW 30mph knots
SW
30mph |
SW 28mph knots
SW
28mph |
SW 27mph knots
SW
27mph |
|
300m
|
300m | W 10mph knots
W
10mph |
SW 8mph knots
SW
8mph |
S 14mph knots
S
14mph |
S 19mph knots
S
19mph |
SW 19mph knots
SW
19mph |
SW 20mph knots
SW
20mph |
SW 19mph knots
SW
19mph |
SW 17mph knots
SW
17mph |
|
Valley
|
Valley | W 10mph knots
W
10mph |
SW 8mph knots
SW
8mph |
S 13mph knots
S
13mph |
S 18mph knots
S
18mph |
SW 19mph knots
SW
19mph |
SW 20mph knots
SW
20mph |
SW 18mph knots
SW
18mph |
SW 16mph knots
SW
16mph |
Wind gust
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 28mph | 27mph | 38mph | 50mph | 47mph | 53mph | 52mph | 50mph |
|
600m
|
600m | 20mph | 19mph | 28mph | 37mph | 36mph | 40mph | 38mph | 37mph |
|
300m
|
300m | 18mph | 16mph | 25mph | 33mph | 33mph | 35mph | 35mph | 33mph |
|
Valley
|
Valley | 18mph | 15mph | 24mph | 32mph | 32mph | 35mph | 33mph | 31mph |
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 8 degrees Celsius 8°C | 6 degrees Celsius 6°C | 6 degrees Celsius 6°C | 7 degrees Celsius 7°C | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C | 7 degrees Celsius 7°C | 6 degrees Celsius 6°C |
|
600m
|
600m | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 9 degrees Celsius 9°C | 11 degrees Celsius 11°C | 10 degrees Celsius 10°C | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C |
|
300m
|
300m | 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 | 12 degrees Celsius 12°C | 11 degrees Celsius 11°C | 10 degrees Celsius 10°C |
|
Valley
|
Valley | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 15 degrees Celsius 15°C | 14 degrees Celsius 14°C | 13 degrees Celsius 13°C | 12 degrees Celsius 12°C |
| Freezing Level | Freezing Level |
2100m
|
1900m
|
2100m
|
2400m
|
2200m
|
2000m
|
1900m
|
1900m
|
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 3 degrees Celsius 3°C | 1 degrees Celsius 1°C | 1 degrees Celsius 1°C | 1 degrees Celsius 1°C | 3 degrees Celsius 3°C | 2 degrees Celsius 2°C | 0 degrees Celsius 0°C | 0 degrees Celsius 0°C |
|
600m
|
600m | 6 degrees Celsius 6°C | 4 degrees Celsius 4°C | 4 degrees Celsius 4°C | 5 degrees Celsius 5°C | 7 degrees Celsius 7°C | 5 degrees Celsius 5°C | 4 degrees Celsius 4°C | 4 degrees Celsius 4°C |
|
300m
|
300m | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 10 degrees Celsius 10°C | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C | 7 degrees Celsius 7°C |
|
Valley
|
Valley | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C | 12 degrees Celsius 12°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 9 degrees Celsius 9°C |
| Freezing Level | Freezing Level |
2100m
|
1900m
|
2100m
|
2400m
|
2200m
|
2000m
|
1900m
|
1900m
|
Additional weather information
Meteorologist's view
Poor mountain walking conditions will lead to slippery surfaces and poor visibility at times, with a slight risk of thunderstorms in the afternoon. Strong winds.
Weather
A wet start with occasionally heavy rain until mid to late morning, this clearing to sunny spells and scattered blustery showers in the afternoon, with a small chance of thunderstorms. Turning rather windy through the day.
Chance of cloud-free hill tops
30% through the morning, rising to 70% through midday.
Low cloud and visibility
Periods of cloud above 450-600m through the morning, lifting and breaking to give patches above 700m during the afternoon. Very good visibility at lower levels but very poor in cloud/hill fog and in heavy rain.
Ground conditions
Please see - https://yrwyddfa.live/
Mountain weather information
Weather
Sunny spells and heavy scattered showers with a risk of afternoon thunderstorms. Rather windy and feeling cold.
Chance of cloud-free hill tops
80%, occasionally lowering to 40% during heavy showers.
Maximum wind speed expected
Westerly 20-30mph gusting 50mph.
Temperature
- At 800m Plus 7 Celsius.
- Valley Plus 9 Celsius, becoming plus 16 Celsius.
- Freezing level Above tops.
Low cloud and visibility
Cloud bases varying through the day, lowering to 500m at times. Cloud bases may lower to 200-300m during heavy showers. Poor visibility over mountain tops.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Fri 5 Jun
A somewhat drier day with periods of hill fog lifting to give occasional sunny spells. The odd shower remains possible. Fresh to strong westerly winds.
Sat 6 Jun
A similar day to on Friday with winds becoming strong to gale force southerly and a chance of showers.
Sun 7 Jun
Bright spells and scattered showers, less windy compared to Saturday.
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.