Mountain weather
Eryri / Snowdonia
Confidence
High for a largely settled period. Lower for amounts of low cloud during the mornings.
-
Fri 3 JulSunrise:Sunset:
-
Sat 4 JulSunrise:Sunset:
-
Further outlook
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Strong Sunlight
Mountain weather forecast
Dry but mainly cloudy, some brighter spells developing later.
|
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 | W 11mph knots
W
11mph |
SW 15mph knots
SW
15mph |
SW 19mph knots
SW
19mph |
SW 24mph knots
SW
24mph |
SW 22mph knots
SW
22mph |
SW 28mph knots
SW
28mph |
|
600m
|
600m | W 6mph knots
W
6mph |
SW 13mph knots
SW
13mph |
SW 17mph knots
SW
17mph |
SW 21mph knots
SW
21mph |
S 22mph knots
S
22mph |
S 18mph knots
S
18mph |
|
300m
|
300m | W 2mph knots
W
2mph |
SW 8mph knots
SW
8mph |
SW 12mph knots
SW
12mph |
SW 14mph knots
SW
14mph |
S 16mph knots
S
16mph |
S 12mph knots
S
12mph |
|
Valley
|
Valley | W 2mph knots
W
2mph |
SW 7mph knots
SW
7mph |
SW 11mph knots
SW
11mph |
SW 14mph knots
SW
14mph |
S 16mph knots
S
16mph |
S 12mph knots
S
12mph |
Wind gust
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
900m
|
900m | 14mph | 20mph | 25mph | 31mph | 29mph | 35mph |
|
600m
|
600m | 8mph | 17mph | 22mph | 28mph | 29mph | 24mph |
|
300m
|
300m | 3mph | 13mph | 18mph | 23mph | 25mph | 22mph |
|
Valley
|
Valley | 3mph | 12mph | 17mph | 22mph | 24mph | 22mph |
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
900m
|
900m | 9 degrees Celsius 9°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 11 degrees Celsius 11°C |
|
600m
|
600m | 11 degrees Celsius 11°C | 12 degrees Celsius 12°C | 13 degrees Celsius 13°C | 13 degrees Celsius 13°C | 11 degrees Celsius 11°C | 12 degrees Celsius 12°C |
|
300m
|
300m | 13 degrees Celsius 13°C | 15 degrees Celsius 15°C | 16 degrees Celsius 16°C | 16 degrees Celsius 16°C | 14 degrees Celsius 14°C | 14 degrees Celsius 14°C |
|
Valley
|
Valley | 14 degrees Celsius 14°C | 16 degrees Celsius 16°C | 17 degrees Celsius 17°C | 17 degrees Celsius 17°C | 16 degrees Celsius 16°C | 15 degrees Celsius 15°C |
| Freezing Level | Freezing Level |
2100m
|
2300m
|
2300m
|
3200m
|
2800m
|
2700m
|
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
900m
|
900m | 6 degrees Celsius 6°C | 6 degrees Celsius 6°C | 7 degrees Celsius 7°C | 6 degrees Celsius 6°C | 6 degrees Celsius 6°C | 6 degrees Celsius 6°C |
|
600m
|
600m | 9 degrees Celsius 9°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C | 9 degrees Celsius 9°C |
|
300m
|
300m | 13 degrees Celsius 13°C | 14 degrees Celsius 14°C | 14 degrees Celsius 14°C | 13 degrees Celsius 13°C | 11 degrees Celsius 11°C | 12 degrees Celsius 12°C |
|
Valley
|
Valley | 14 degrees Celsius 14°C | 15 degrees Celsius 15°C | 15 degrees Celsius 15°C | 15 degrees Celsius 15°C | 13 degrees Celsius 13°C | 13 degrees Celsius 13°C |
| Freezing Level | Freezing Level |
2100m
|
2300m
|
2300m
|
3200m
|
2800m
|
2700m
|
Additional weather information
Meteorologist's view
UV protection required even with cloud cover.
Weather
Dry but mainly cloudy, some brighter spells developing later. Any early low cloud and hill fog will soon lift, then is likely to develop later this evening. Less windy compared to Thursday.
Chance of cloud-free hill tops
60% in west, 90% in the east at first then decreasing 40% in west and 60% in east late evening. Otherwise 100%.
Low cloud and visibility
Cloud possibly shrouding some western summits at first and again later this evening, bases 600-800m. Poor visibility with any hill fog, otherwise very good visibility.
Ground conditions
Please see - https://yrwyddfa.live/
Mountain weather information
Weather
Low cloud and hill fog to start, thick enough for some light rain and drizzle over the hills, then persisting through much of the day. Mid to late afternoon probably becoming dry, while the hill fog lingers.
Chance of cloud-free hill tops
20% perhaps temporarily rising to 60% through the afternoon.
Maximum wind speed expected
Westerly 25-30mph.
Temperature
- At 800m Plus 11 rising to plus 14 Celsius.
- Valley Plus 14 Celsius rising to plus 18 Celsius.
- Freezing level Above summits.
Low cloud and visibility
Low cloud and hill fog to start, then lifting and breaking to mostly at or close to summits. Then returning through the evening. Poor visibility initially but improving to good, then dropping again by the evening.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Sun 5 Jul
Low cloud and hill fog early in the day, lifting or breaking through the morning but returning in the evening. Dry with some brighter spells in-between. Moderate westerly wind.
Mon 6 Jul
Low cloud and fog to start with rain and drizzle in the west, then bright or sunny spells. Feeling warmer.
Tue 7 Jul
Low cloud and fog then sunny spells with moderate westerly winds. Temperatures rising.
Mountain weather information
Sun 5 Jul
Low cloud and hill fog early in the day, lifting or breaking through the morning but returning in the evening. Dry with some brighter spells in-between. Moderate westerly wind.
Mon 6 Jul
Low cloud and fog to start with rain and drizzle in the west, then bright or sunny spells. Feeling warmer.
Tue 7 Jul
Low cloud and fog then sunny spells with moderate westerly winds. Temperatures rising.
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.