Mountain weather
Eryri / Snowdonia
Confidence
High for a general picture. Low for details of rain and showers next week.
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This eveningSunrise:Sunset:
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Sun 2 AugSunrise:Sunset:
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Mon 3 AugSunrise:Sunset:
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Further outlook
This evening forecast
Plenty of late evening sunshine to end the day with a dry night, with plenty of clear spells, to follow.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Strong Sunlight
Mountain weather forecast
A generally dry day ahead although turning cloudier later.
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Time
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Time |
00:00
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03:00
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06:00
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09:00
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12:00
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15:00
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18:00
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21:00
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|---|---|---|---|---|---|---|---|---|---|
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Weather
(at 800m)
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Weather symbols |  |
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 |
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 |
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|
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Chance of
precipitation (at 800m)
|
Chance of precipitation |
10%
|
10%
|
10%
|
10%
|
10%
|
20%
|
10%
|
10%
|
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 7mph knots
SW
7mph |
S 3mph knots
S
3mph |
E 7mph knots
E
7mph |
SE 9mph knots
SE
9mph |
SE 7mph knots
SE
7mph |
SE 5mph knots
SE
5mph |
NE 11mph knots
NE
11mph |
NE 17mph knots
NE
17mph |
|
600m
|
600m | S 9mph knots
S
9mph |
S 6mph knots
S
6mph |
SE 4mph knots
SE
4mph |
SE 7mph knots
SE
7mph |
SE 6mph knots
SE
6mph |
NE 8mph knots
NE
8mph |
NE 8mph knots
NE
8mph |
E 9mph knots
E
9mph |
|
300m
|
300m | S 5mph knots
S
5mph |
SE 3mph knots
SE
3mph |
SE 3mph knots
SE
3mph |
SE 6mph knots
SE
6mph |
SE 5mph knots
SE
5mph |
NE 7mph knots
NE
7mph |
NE 7mph knots
NE
7mph |
E 4mph knots
E
4mph |
|
Valley
|
Valley | S 5mph knots
S
5mph |
S 4mph knots
S
4mph |
SE 4mph knots
SE
4mph |
SE 6mph knots
SE
6mph |
SE 5mph knots
SE
5mph |
N 8mph knots
N
8mph |
NE 6mph knots
NE
6mph |
E 3mph knots
E
3mph |
Wind gust
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 10mph | 4mph | 9mph | 12mph | 11mph | 8mph | 15mph | 23mph |
|
600m
|
600m | 11mph | 7mph | 6mph | 10mph | 10mph | 12mph | 11mph | 13mph |
|
300m
|
300m | 10mph | 5mph | 6mph | 10mph | 9mph | 10mph | 12mph | 9mph |
|
Valley
|
Valley | 11mph | 6mph | 6mph | 9mph | 9mph | 12mph | 12mph | 7mph |
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | ||||||||
|
600m
|
600m | ||||||||
|
300m
|
300m | ||||||||
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Valley
|
Valley | ||||||||
| Freezing Level | Freezing Level |
2000m
|
1900m
|
1900m
|
2000m
|
2100m
|
2200m
|
2400m
|
2500m
|
Additional weather information
Meteorologist's view
A fine day for hill walking with plenty of dry and bright weather as well as light to moderate winds. Despite it not feeling especially hot, remember to protect your skin from the strong sunshine as UV levels will be high.
Weather
A chilly start with any valley mist rapidly clearing to leave a dry morning with sunny periods, though the sunshine will become hazy as high cloud spreads in. Later the cloud may thicken, with a low risk of the odd spot of rain. Feeling very warm.
Chance of cloud-free hill tops
>95%
Low cloud and visibility
All cloud is expected to be above the summits. Very good visibility with views of distant peaks possible.
Ground conditions
Please see - https://yrwyddfa.live/
Mountain weather information
Weather
A very warm and increasingly humid day with a mixture of cloud and bright or sunny spells. A chance of showers with potentially heavy and thundery downpours later, albeit with considerable uncertainty in the details. Light to moderate easterly winds.
Chance of cloud-free hill tops
>95%
Maximum wind speed expected
southeasterly becoming southwesterly 15-20 mph.
Temperature
- At 800m plus 10 Celsius rising to plus 17 Celsius.
- Valley plus 15 Celsius rising to plus 24 Celsius.
- Freezing level above summits.
Low cloud and visibility
All cloud is expected to be above the summits. Very good visibility with views of distant peaks possible. Visibilities may become moderate in any passing showers.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Tue 4 Aug
A very warm and humid day with a chance of heavy downpours or thunderstorms. Dry periods are also likely. Light to moderate southerly breeze.
Wed 5 Aug
A changeable day is likely with a chance of showers, perhaps heavy. Showers dying out through the morning. Winds perhaps changing to a westerly direction and staying light to moderate.
Thu 6 Aug
A generally dry day with variable cloud around throughout. The odd light shower cannot be ruled out. Light to moderate northwesterly winds.
Summit specific forecast
Mountain summits
Other points of interest
Cluster of multiple stations