Mountain weather
Eryri / Snowdonia
Confidence
High overall.
-
This eveningSunrise:Sunset:
-
Mon 29 JunSunrise:Sunset:
-
Tue 30 JunSunrise:Sunset:
-
Further outlook
This evening forecast
Dry with clear or sunny spells across the park.
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
Dry, with clear or sunny spells, cloudier later.
|
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%
|
20%
|
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 27mph knots
SW
27mph |
W 24mph knots
W
24mph |
W 20mph knots
W
20mph |
W 14mph knots
W
14mph |
SW 16mph knots
SW
16mph |
SW 17mph knots
SW
17mph |
SW 16mph knots
SW
16mph |
SW 18mph knots
SW
18mph |
|
600m
|
600m | SW 15mph knots
SW
15mph |
SW 14mph knots
SW
14mph |
W 14mph knots
W
14mph |
W 12mph knots
W
12mph |
SW 14mph knots
SW
14mph |
SW 15mph knots
SW
15mph |
SW 15mph knots
SW
15mph |
S 13mph knots
S
13mph |
|
300m
|
300m | SW 10mph knots
SW
10mph |
SW 8mph knots
SW
8mph |
W 9mph knots
W
9mph |
W 9mph knots
W
9mph |
SW 10mph knots
SW
10mph |
SW 12mph knots
SW
12mph |
SW 11mph knots
SW
11mph |
S 7mph knots
S
7mph |
|
Valley
|
Valley | SW 9mph knots
SW
9mph |
SW 7mph knots
SW
7mph |
W 8mph knots
W
8mph |
W 9mph knots
W
9mph |
SW 10mph knots
SW
10mph |
SW 11mph knots
SW
11mph |
SW 11mph knots
SW
11mph |
S 7mph knots
S
7mph |
Wind gust
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 32mph | 29mph | 25mph | 19mph | 22mph | 23mph | 22mph | 22mph |
|
600m
|
600m | 21mph | 19mph | 19mph | 17mph | 19mph | 21mph | 21mph | 17mph |
|
300m
|
300m | 19mph | 16mph | 15mph | 15mph | 17mph | 19mph | 18mph | 14mph |
|
Valley
|
Valley | 19mph | 15mph | 15mph | 14mph | 16mph | 19mph | 18mph | 13mph |
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 8 degrees Celsius 8°C | 7 degrees Celsius 7°C | 7 degrees Celsius 7°C | 8 degrees Celsius 8°C | 9 degrees Celsius 9°C | 10 degrees Celsius 10°C | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C |
|
600m
|
600m | 10 degrees Celsius 10°C | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C | 10 degrees Celsius 10°C | 11 degrees Celsius 11°C | 12 degrees Celsius 12°C | 11 degrees Celsius 11°C | 10 degrees Celsius 10°C |
|
300m
|
300m | 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 | 15 degrees Celsius 15°C | 14 degrees Celsius 14°C | 13 degrees Celsius 13°C |
|
Valley
|
Valley | 14 degrees Celsius 14°C | 13 degrees Celsius 13°C | 13 degrees Celsius 13°C | 15 degrees Celsius 15°C | 16 degrees Celsius 16°C | 17 degrees Celsius 17°C | 16 degrees Celsius 16°C | 15 degrees Celsius 15°C |
| Freezing Level | Freezing Level |
2000m
|
1900m
|
1900m
|
2200m
|
2300m
|
2200m
|
2200m
|
2200m
|
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
900m
|
900m | 3 degrees Celsius 3°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C | 4 degrees Celsius 4°C | 5 degrees Celsius 5°C | 6 degrees Celsius 6°C | 6 degrees Celsius 6°C | 5 degrees Celsius 5°C |
|
600m
|
600m | 7 degrees Celsius 7°C | 6 degrees Celsius 6°C | 6 degrees Celsius 6°C | 8 degrees Celsius 8°C | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C |
|
300m
|
300m | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 13 degrees Celsius 13°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C |
|
Valley
|
Valley | 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 | 15 degrees Celsius 15°C | 14 degrees Celsius 14°C | 14 degrees Celsius 14°C |
| Freezing Level | Freezing Level |
2000m
|
1900m
|
1900m
|
2200m
|
2300m
|
2200m
|
2200m
|
2200m
|
Additional weather information
Meteorologist's view
Lots of sunshine and UV levels continue to be moderate to high so wearing light clothing with hats and glasses, to protect from the sun is advised. Conditions will deteriorate later, so some water proofs may also been needed.
Weather
Variable amounts of cloud across the park, with clear or sunny spells, skies. High cloud building through the afternoon with overcast skies developing during the evening. An increasing chance of patchy drizzle overnight.
Chance of cloud-free hill tops
80%
Low cloud and visibility
There may be some bits of low cloud during the early hours of the morning, but most bases above 600m, and is mostly high cloud. Visibility generally good to very good visibility, but deteriorating to moderate in any drizzle later.
Ground conditions
Please see - https://yrwyddfa.live/
Mountain weather information
Weather
Cloud continues to build during the early hours, with outbreaks of showery rain developing by dawn. Some heavier bursts possible, perhaps with the odd rumble of thunder during the afternoon.
Chance of cloud-free hill tops
70% soon decreasing to 50% during the morning.
Maximum wind speed expected
Southwesterly 15-20mph, gusting 25-30 mph.
Temperature
- At 800m Plus 8 Celsius, rising to plus 14 Celsius.
- Valley Plus 6 Celsius, rising to plus 19 Celsius.
- Freezing level Above summits.
Low cloud and visibility
Cloud bases mostly above the level of summits, however areas of cloud descending to 500 meters during the morning. Visibilities generally good with temporary deteriorations to moderate and poor in any rain.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Wed 1 Jul
A dry day with a mix of cloud and sunny spells. Moderate westerly winds, freezing levels above the level of summits.
Thu 2 Jul
Mostly dry with sunny spells, however a band of cloud and patchy rain likely to move across the park during the morning, before clearing. Moderate westerly winds.
Fri 3 Jul
Increasingly settled with clear skies, strong sunshine allowing temperatures to climb.
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.