Mountain weather
Eryri / Snowdonia
Confidence
High though some uncertainty on amount of cloud.
-
This eveningSunrise:Sunset:
-
Sat 27 JunSunrise:Sunset:
-
Sun 28 JunSunrise:Sunset:
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Further outlook
This evening forecast
Clear spells with patch cloud about. Staying hot into the evening with humidity staying high.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Strong Sunlight
Poor Visibility
Thunderstorms
Mountain weather forecast
Cloudy start but mostly dry with isolated showers. Staying hot and humid.
|
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 |
10%
|
10%
|
20%
|
10%
|
10%
|
10%
|
10%
|
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 | SW 33mph knots
SW
33mph |
S 31mph knots
S
31mph |
S 31mph knots
S
31mph |
S 34mph knots
S
34mph |
S 38mph knots
S
38mph |
SW 37mph knots
SW
37mph |
SW 35mph knots
SW
35mph |
S 32mph knots
S
32mph |
|
600m
|
600m | S 22mph knots
S
22mph |
S 21mph knots
S
21mph |
S 22mph knots
S
22mph |
S 26mph knots
S
26mph |
S 29mph knots
S
29mph |
S 28mph knots
S
28mph |
S 24mph knots
S
24mph |
S 22mph knots
S
22mph |
|
300m
|
300m | S 16mph knots
S
16mph |
S 13mph knots
S
13mph |
S 14mph knots
S
14mph |
S 18mph knots
S
18mph |
S 21mph knots
S
21mph |
S 19mph knots
S
19mph |
S 16mph knots
S
16mph |
S 14mph knots
S
14mph |
|
Valley
|
Valley | S 15mph knots
S
15mph |
S 13mph knots
S
13mph |
S 13mph knots
S
13mph |
S 17mph knots
S
17mph |
S 20mph knots
S
20mph |
S 19mph knots
S
19mph |
S 15mph knots
S
15mph |
S 13mph knots
S
13mph |
Wind gust
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 40mph | 38mph | 39mph | 44mph | 49mph | 48mph | 45mph | 42mph |
|
600m
|
600m | 28mph | 27mph | 29mph | 35mph | 40mph | 39mph | 33mph | 30mph |
|
300m
|
300m | 27mph | 23mph | 26mph | 32mph | 36mph | 34mph | 29mph | 26mph |
|
Valley
|
Valley | 26mph | 23mph | 24mph | 30mph | 34mph | 33mph | 28mph | 24mph |
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 13 degrees Celsius 13°C | 14 degrees Celsius 14°C | 14 degrees Celsius 14°C | 13 degrees Celsius 13°C | 12 degrees Celsius 12°C |
|
600m
|
600m | 14 degrees Celsius 14°C | 14 degrees Celsius 14°C | 14 degrees Celsius 14°C | 15 degrees Celsius 15°C | 16 degrees Celsius 16°C | 16 degrees Celsius 16°C | 15 degrees Celsius 15°C | 14 degrees Celsius 14°C |
|
300m
|
300m | 16 degrees Celsius 16°C | 16 degrees Celsius 16°C | 16 degrees Celsius 16°C | 18 degrees Celsius 18°C | 19 degrees Celsius 19°C | 19 degrees Celsius 19°C | 18 degrees Celsius 18°C | 16 degrees Celsius 16°C |
|
Valley
|
Valley | 17 degrees Celsius 17°C | 18 degrees Celsius 18°C | 18 degrees Celsius 18°C | 19 degrees Celsius 19°C | 20 degrees Celsius 20°C | 21 degrees Celsius 21°C | 20 degrees Celsius 20°C | 18 degrees Celsius 18°C |
| Freezing Level | Freezing Level |
3000m
|
2900m
|
2700m
|
2400m
|
2900m
|
3000m
|
2900m
|
3000m
|
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 7 degrees Celsius 7°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 7 degrees Celsius 7°C |
|
600m
|
600m | 10 degrees Celsius 10°C | 11 degrees Celsius 11°C | 11 degrees Celsius 11°C | 10 degrees Celsius 10°C | 11 degrees Celsius 11°C | 11 degrees Celsius 11°C | 11 degrees Celsius 11°C | 10 degrees Celsius 10°C |
|
300m
|
300m | 14 degrees Celsius 14°C | 14 degrees Celsius 14°C | 14 degrees Celsius 14°C | 14 degrees Celsius 14°C | 15 degrees Celsius 15°C | 15 degrees Celsius 15°C | 15 degrees Celsius 15°C | 14 degrees Celsius 14°C |
|
Valley
|
Valley | 15 degrees Celsius 15°C | 16 degrees Celsius 16°C | 16 degrees Celsius 16°C | 16 degrees Celsius 16°C | 16 degrees Celsius 16°C | 17 degrees Celsius 17°C | 17 degrees Celsius 17°C | 16 degrees Celsius 16°C |
| Freezing Level | Freezing Level |
3000m
|
2900m
|
2700m
|
2400m
|
2900m
|
3000m
|
2900m
|
3000m
|
Additional weather information
Meteorologist's view
Another hot and humid day expected with very high UV levels. Plenty of sun protection is needed and stay hydrated and carry extra bottles of water. Wear light clothes with hats and glasses, to protect from the sun.
Weather
A mostly dry and bright day ahead, especially in the afternoon. Patchy light rain around. Otherwise sunny spells, and a chance of some patchy lower cloud pushing in from the west into the late afternoon.
Chance of cloud-free hill tops
40% rising to 80% in the afternoon.
Low cloud and visibility
Some mist and fog possible to start and end the day, otherwise very good visibility. Little cloud during the day, though bases may drop to around 700-800m from the west during the late evening. Potentially around to 200-300m by towards midnight.
Ground conditions
Please see - https://yrwyddfa.live/
Mountain weather information
Weather
A band of rain and showers moving through during the early hours of the morning. Can be heavy at times with low cloud. Moving through quickly through the morning, bringing fresher, less humid and cooler conditions compared too late. Sunshine returning into the afternoon as UV levels stay high.
Chance of cloud-free hill tops
20% during the morning, lifting to 80% in the afternoon.
Maximum wind speed expected
25-35 mph
Temperature
- At 800m Plus 12 Celsius, rising to plus 15 Celsius.
- Valley Plus 17 Celsius, rising to plus 20 Celsius.
- Freezing level Above summits.
Low cloud and visibility
Fog and low cloud during the morning, but visibility improving quickly. Cloud bases starting off around 200-300m but lifting to above 600m lifts and breaks through the day.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Mon 29 Jun
A mix of cloud and sunny spells. Scattered showers at times. Feeling much fresher than of late. Light to moderate westerly winds. The odd isolated shower possible.
Tue 30 Jun
Some more showers likely, turning heavy at times. Can be gusty.
Wed 1 Jul
A little more cloud possible. Mostly dry with isolated showers.
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.