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Not available Not available 0700 on Mon 22 Sep 2014 1000 on Mon 22 Sep 2014 1300 on Mon 22 Sep 2014 1600 on Mon 22 Sep 2014 1900 on Mon 22 Sep 2014 2200 on Mon 22 Sep 2014 0100 on Tue 23 Sep 2014 0400 on Tue 23 Sep 2014 0700 on Tue 23 Sep 2014 1000 on Tue 23 Sep 2014 1300 on Tue 23 Sep 2014 1600 on Tue 23 Sep 2014 1900 on Tue 23 Sep 2014 Night-time Tue 23 Sep 2014 Daytime Wed 24 Sep 2014 Night-time Wed 24 Sep 2014 Daytime Thu 25 Sep 2014 Night-time Thu 25 Sep 2014 Daytime Fri 26 Sep 2014 Night-time Fri 26 Sep 2014
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Updated: 0457 on Mon 22 Sep 2014
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Snowdonia: forecast weather

Monday, 22 September 2014: dawn to dusk

Printable view Forecast issued: 0243 on Monday, 22 September 2014

Overview for Monday

A cold start this morning, with a little patchy mist and fog in prone valleys. However, the rest of the day will be dry and bright with sunny spells.

Hazards Risk Explanation
Blizzards No Risk  
Heavy snow No Risk  
Storm force winds No Risk  
Gales No Risk  
Severe chill effect No Risk  
Persistent and extensive hill fog Low Occasional patches around 600 metres.
Thunderstorms No Risk  
Heavy persistent rain No Risk  
Strong Sunlight Medium Moderate risk of sunburn.

key to hazards and forecast content

Weather summary and probability of precipitation for Monday
Dawn to 0900 0900 to 1200 1200 to 1500 1500 to dusk
Sunny
Sunny
Sunny
Sunny
Sunny intervals
Sunny intervals
Sunny intervals
Sunny intervals
0% 0% 0% 0%

Detailed mountain weather forecast: Snowdonia

Monday

Weather

A cold start this morning, with a few mist and fog patches, mainly in prone valleys. However, staying dry and bright across the Park, with sunny spells. Some patchy cloud is likely in the afternoon, especially in the east of the park. Sunshine will give a moderate risk of sunburn.

Visibility

Very good or excellent, perhaps poor or very poor in any mist or fog.

Hill fog

Occasional patches around 600 metres as cloud develops from the east.

Maximum winds above 500m

Westerly 25 mph.

Temperature

Valleys Plus 2 rising to 17 Celsius.
900 m Plus 8 Celsius.
Freezing level Above the summits.

Tuesday

Weather

Dry through the early hours with cloud amounts increasing by dawn. A few bright spells are possible in the morning but outbreaks of rain are expected from around midday, easing during the evening.

Visibility

Moderate or good, but very poor in hill fog. Moderate or poor in rain.

Hill fog

Periods above around 400m for most of the day.

Maximum winds above 500m

Southwesterly 35 mph.

Temperature

Valleys Plus 8 rising to 16 Celsius.
900 m Plus 8 Celsius.
Freezing level Above the summits.

Outlook

Wednesday

Rather cloudy at first, with outbreaks of rain. However, drier and brighter weather will spread from the northwest during the afternoon, with most of the Park set to enjoy some sunshine. Fresh to strong northwesterly winds over the peaks.

Thursday

Rather cloudy throughout the day, with the best of any bright or sunny intervals to the lee of high ground in the east of the Park. Brisk westerly winds and patchy hill fog on west facing slopes. Dry through much of the day, but there will be a risk of a little drizzle late afternoon and evening.

Friday

Another cloudy day with patchy drizzle possible, along with fairly extensive hill fog, especially on west-facing slopes. Perhaps some more persistent rain later in the day. Strong southwesterly winds.

Observations

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Weather warnings for Wales

Weather forecast for Wales

The Enhanced Mountain forecast for Snowdonia has been discontinued. All forecast information for these locations can be found in the standard Mountain forecast above.

North East England West Midlands Grampian South West England Central, Tayside & Fife Northern Ireland North West England East of England Highlands & Eilean Siar Strathclyde Wales East Midlands SW Scotland, Lothian Borders London & South East England Yorkshire & Humber

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