Mountain weather
Eryri / Snowdonia
Confidence
High overall.
-
This eveningSunrise:Sunset:
-
Thu 16 JulSunrise:Sunset:
-
Fri 17 JulSunrise:Sunset:
-
Further outlook
This evening forecast
Dry with plenty of evening sunshine. Staying dry with clear skies after dusk. Light to moderate easterly winds. Very good visibility.
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 with warm sunny spells. Breezy.
|
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%
|
10%
|
10%
|
10%
|
10%
|
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 | E 16mph knots
E
16mph |
E 15mph knots
E
15mph |
E 13mph knots
E
13mph |
SE 9mph knots
SE
9mph |
E 7mph knots
E
7mph |
NE 10mph knots
NE
10mph |
N 9mph knots
N
9mph |
N 10mph knots
N
10mph |
|
600m
|
600m | E 10mph knots
E
10mph |
E 7mph knots
E
7mph |
E 8mph knots
E
8mph |
E 7mph knots
E
7mph |
E 6mph knots
E
6mph |
NE 9mph knots
NE
9mph |
N 8mph knots
N
8mph |
N 7mph knots
N
7mph |
|
300m
|
300m | SE 6mph knots
SE
6mph |
SE 4mph knots
SE
4mph |
SE 5mph knots
SE
5mph |
SE 6mph knots
SE
6mph |
NE 5mph knots
NE
5mph |
NE 9mph knots
NE
9mph |
N 6mph knots
N
6mph |
N 4mph knots
N
4mph |
|
Valley
|
Valley | SE 6mph knots
SE
6mph |
SE 4mph knots
SE
4mph |
SE 5mph knots
SE
5mph |
SE 6mph knots
SE
6mph |
NE 6mph knots
NE
6mph |
N 9mph knots
N
9mph |
N 6mph knots
N
6mph |
NW 3mph knots
NW
3mph |
Wind gust
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 21mph | 19mph | 15mph | 12mph | 10mph | 14mph | 13mph | 13mph |
|
600m
|
600m | 18mph | 14mph | 12mph | 10mph | 9mph | 13mph | 11mph | 9mph |
|
300m
|
300m | 16mph | 12mph | 11mph | 9mph | 8mph | 13mph | 11mph | 6mph |
|
Valley
|
Valley | 16mph | 12mph | 11mph | 9mph | 9mph | 14mph | 10mph | 5mph |
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 15 degrees Celsius 15°C | 14 degrees Celsius 14°C | 14 degrees Celsius 14°C | 15 degrees Celsius 15°C | 17 degrees Celsius 17°C | 18 degrees Celsius 18°C | 17 degrees Celsius 17°C | 16 degrees Celsius 16°C |
|
600m
|
600m | 17 degrees Celsius 17°C | 16 degrees Celsius 16°C | 16 degrees Celsius 16°C | 18 degrees Celsius 18°C | 20 degrees Celsius 20°C | 20 degrees Celsius 20°C | 19 degrees Celsius 19°C | 17 degrees Celsius 17°C |
|
300m
|
300m | 18 degrees Celsius 18°C | 17 degrees Celsius 17°C | 18 degrees Celsius 18°C | 20 degrees Celsius 20°C | 23 degrees Celsius 23°C | 23 degrees Celsius 23°C | 21 degrees Celsius 21°C | 18 degrees Celsius 18°C |
|
Valley
|
Valley | 19 degrees Celsius 19°C | 18 degrees Celsius 18°C | 18 degrees Celsius 18°C | 22 degrees Celsius 22°C | 24 degrees Celsius 24°C | 23 degrees Celsius 23°C | 21 degrees Celsius 21°C | 19 degrees Celsius 19°C |
| Freezing Level | Freezing Level |
2500m
|
2400m
|
2400m
|
2500m
|
2600m
|
2700m
|
2800m
|
2800m
|
|
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 | 11 degrees Celsius 11°C | 12 degrees Celsius 12°C | 14 degrees Celsius 14°C | 16 degrees Celsius 16°C | 16 degrees Celsius 16°C | 15 degrees Celsius 15°C | 13 degrees Celsius 13°C |
|
600m
|
600m | 15 degrees Celsius 15°C | 15 degrees Celsius 15°C | 15 degrees Celsius 15°C | 17 degrees Celsius 17°C | 19 degrees Celsius 19°C | 19 degrees Celsius 19°C | 18 degrees Celsius 18°C | 16 degrees Celsius 16°C |
|
300m
|
300m | 17 degrees Celsius 17°C | 17 degrees Celsius 17°C | 17 degrees Celsius 17°C | 20 degrees Celsius 20°C | 22 degrees Celsius 22°C | 21 degrees Celsius 21°C | 20 degrees Celsius 20°C | 18 degrees Celsius 18°C |
|
Valley
|
Valley | 18 degrees Celsius 18°C | 18 degrees Celsius 18°C | 18 degrees Celsius 18°C | 21 degrees Celsius 21°C | 23 degrees Celsius 23°C | 22 degrees Celsius 22°C | 20 degrees Celsius 20°C | 18 degrees Celsius 18°C |
| Freezing Level | Freezing Level |
2500m
|
2400m
|
2400m
|
2500m
|
2600m
|
2700m
|
2800m
|
2800m
|
Additional weather information
Meteorologist's view
A brilliant day to be in the national park. However, applying sunscreen regularly is advised as well as wearing a hat and sunglasses because UV levels will be Very High. High temperatures, especially during the afternoon, may lead to heat exhaustion. Keep hydrated by drinking plenty of water, and taking regular breaks from strenuous activity.
Weather
Dry with clear skies overnight. Another dry and bright day with plenty of strong sunshine, possibly turning a little hazy at times due to high-level cloud. Gentle to moderate easterly winds gradually becoming northerly.
Chance of cloud-free hill tops
>95%.
Low cloud and visibility
No low cloud or visibility issues expected, excellent visibilities with views of distant peaks possible.
Ground conditions
Please see - https://yrwyddfa.live/
Mountain weather information
Weather
Similar to Thursday, staying dry with plenty of strong sunshine, possibly turning a little hazy at times due to high-level cloud. Staying dry with clear skies after dusk.
Chance of cloud-free hill tops
>95%.
Maximum wind speed expected
Northerly 10-15mph, occasionally gusting 25mph.
Temperature
- At 800m Plus 12 Celsius, reaching Plus 16 Celsius.
- Valley Plus 14 Celsius, reaching Plus 22 Celsius.
- Freezing level Above the summits.
Low cloud and visibility
No low cloud or visibility issues expected, excellent visibilities with views of distant peaks possible.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Sat 18 Jul
Dry with variable cloud and bright or sunny spells. Temperatures lower than recent days, but still feeling warm. Light northerly winds. Freezing levels above the summits.
Sun 19 Jul
Similar conditions to Saturday, dry with sunny spells. Temperatures slightly lower than on Saturday, but still feeling warm, with light and variable winds. Freezing levels above the summits.
Mon 20 Jul
Dry with variable cloud and bright or sunny spells. Temperatures near normal or still warm. Light and variable winds. Freezing levels above the 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.