Mountain weather
Eryri / Snowdonia
Confidence
High.
-
This eveningSunrise:Sunset:
-
Tue 21 JulSunrise:Sunset:
-
Wed 22 JulSunrise:Sunset:
-
Further outlook
This evening forecast
A clear, dry and warm end to the day.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Strong Sunlight
Poor Visibility
Severe Chill Effect
Mountain weather forecast
Another dry and settled day with sunshine.
|
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 | NE 10mph knots
NE
10mph |
NE 7mph knots
NE
7mph |
E 4mph knots
E
4mph |
NW 6mph knots
NW
6mph |
NW 9mph knots
NW
9mph |
N 12mph knots
N
12mph |
N 12mph knots
N
12mph |
N 16mph knots
N
16mph |
|
600m
|
600m | N 5mph knots
N
5mph |
NE 3mph knots
NE
3mph |
N 4mph knots
N
4mph |
N 6mph knots
N
6mph |
NW 9mph knots
NW
9mph |
N 12mph knots
N
12mph |
N 11mph knots
N
11mph |
N 8mph knots
N
8mph |
|
300m
|
300m | NW 3mph knots
NW
3mph |
W 2mph knots
W
2mph |
NW 3mph knots
NW
3mph |
NW 5mph knots
NW
5mph |
NW 8mph knots
NW
8mph |
N 10mph knots
N
10mph |
N 9mph knots
N
9mph |
N 6mph knots
N
6mph |
|
Valley
|
Valley | NW 3mph knots
NW
3mph |
W 2mph knots
W
2mph |
NW 3mph knots
NW
3mph |
NW 6mph knots
NW
6mph |
NW 9mph knots
NW
9mph |
N 10mph knots
N
10mph |
N 9mph knots
N
9mph |
NW 7mph knots
NW
7mph |
Wind gust
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 13mph | 9mph | 6mph | 8mph | 13mph | 17mph | 17mph | 23mph |
|
600m
|
600m | 6mph | 6mph | 5mph | 9mph | 14mph | 17mph | 15mph | 13mph |
|
300m
|
300m | 5mph | 3mph | 4mph | 7mph | 12mph | 15mph | 14mph | 11mph |
|
Valley
|
Valley | 5mph | 3mph | 4mph | 8mph | 13mph | 16mph | 15mph | 13mph |
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 11 degrees Celsius 11°C | 11 degrees Celsius 11°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 | 9 degrees Celsius 9°C |
|
600m
|
600m | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 13 degrees Celsius 13°C | 15 degrees Celsius 15°C | 15 degrees Celsius 15°C | 13 degrees Celsius 13°C | 11 degrees Celsius 11°C |
|
300m
|
300m | 13 degrees Celsius 13°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 15 degrees Celsius 15°C | 17 degrees Celsius 17°C | 17 degrees Celsius 17°C | 16 degrees Celsius 16°C | 13 degrees Celsius 13°C |
|
Valley
|
Valley | 13 degrees Celsius 13°C | 12 degrees Celsius 12°C | 13 degrees Celsius 13°C | 16 degrees Celsius 16°C | 18 degrees Celsius 18°C | 18 degrees Celsius 18°C | 17 degrees Celsius 17°C | 15 degrees Celsius 15°C |
| Freezing Level | Freezing Level |
2800m
|
2900m
|
3000m
|
3100m
|
3100m
|
3100m
|
2800m
|
2800m
|
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 11 degrees Celsius 11°C | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C | 5 degrees Celsius 5°C |
|
600m
|
600m | 11 degrees Celsius 11°C | 11 degrees Celsius 11°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 14 degrees Celsius 14°C | 12 degrees Celsius 12°C | 11 degrees Celsius 11°C | 9 degrees Celsius 9°C |
|
300m
|
300m | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 15 degrees Celsius 15°C | 16 degrees Celsius 16°C | 15 degrees Celsius 15°C | 14 degrees Celsius 14°C | 12 degrees Celsius 12°C |
|
Valley
|
Valley | 13 degrees Celsius 13°C | 12 degrees Celsius 12°C | 13 degrees Celsius 13°C | 16 degrees Celsius 16°C | 17 degrees Celsius 17°C | 16 degrees Celsius 16°C | 15 degrees Celsius 15°C | 14 degrees Celsius 14°C |
| Freezing Level | Freezing Level |
2800m
|
2900m
|
3000m
|
3100m
|
3100m
|
3100m
|
2800m
|
2800m
|
Additional weather information
Meteorologist's view
A great day to enjoy the National Park, with plenty of dry weather and sunny spells expected. UV levels will be high, so appropriate sun protection is recommended. Temperatures will also be warm, and visitors should ensure they stay well hydrated throughout the day.
Weather
A similar day ahead with patchy low cloud to the north of the park initially, as well as mist and fog patches at low levels. This is expected to clear through the morning to leave a dry and fine day with lengthy sunshine. Variable high cloud increasing through the afternoon with sunny periods still likely. Light to moderate northerly winds.
Chance of cloud-free hill tops
40% rising to 90%
Low cloud and visibility
Cloud initially around 300-500m, mainly to the north of the park, as well as more extensive mist and fog in valleys. This will limit visibilities at low levels and highest peaks initially. Mist and fog quickly clearing with low level cloud slowly lifting and breaking to leave very good visibilities with views of distant peak possible.
Ground conditions
Please see - https://yrwyddfa.live/
Mountain weather information
Weather
Patchy cloud first thing. Otherwise another dry and sunny day with generally light winds.
Chance of cloud-free hill tops
50% rising to 90%
Maximum wind speed expected
20 mph
Temperature
- At 800m plus 10 Celsius rising to plus 14 Celsius.
- Valley plus 13 Celsius rising to plus 20 Celsius.
- Freezing level above summits.
Low cloud and visibility
Some cloud bases around 700-800ft to start, as well and some mist and fog in prone valleys. This clearing quickly though the morning to bring little to no low cloud, and excellent visibilities.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Thu 23 Jul
Limited low cloud Thursday morning quickly clearing. Leaving a fine and probably largely sunny day. Some patchy cloud through the afternoon but this above peaks. Gentle to moderate northerly winds. Freezing level above summits.
Fri 24 Jul
Another largely fine day with variable cloud. Gentle to moderate northerly winds. Freezing level above summits.
Sat 25 Jul
Similar. Though a chance of rain by the evening, or overnight.
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.