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Not available Not available Not available Not available Not available Not available Not available 2200 on Sun 21 Sep 2014 0100 on Mon 22 Sep 2014 0400 on Mon 22 Sep 2014 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 Night-time Mon 22 Sep 2014 Daytime 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
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Updated: 2057 on Sun 21 Sep 2014
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Brecon Beacons: forecast wind

Sunday, 21 September 2014: dawn to dusk

Printable view Forecast issued: 1558 on Sunday, 21 September 2014

Overview for Monday

Dry, fine and chilly through the early hours with the odd mist patch. Staying dry with prolonged sunny spells through the day and only small amounts of cloud developing.

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 the peaks.
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 intervals
Sunny intervals
0% 0% 0% 0%

Detailed mountain weather forecast: Brecon Beacons

Monday

Weather

Dry, fine and chilly through the early hours with the odd mist patch. It will stay dry with prolonged sunny spells through the day, with only small amounts of cloud developing, especially in the east of the park. Sunshine will give a moderate risk of sun burn.

Visibility

Very good or excellent, occasionally poor in any mist first thing.

Hill fog

Occasional patches around the peaks as cloud develops from the east.

Maximum winds above 400m

West to northwest 15-20 mph.

Temperature

Valleys Plus 4 rising to 17 Celsius.
800 m Plus 10 Celsius.
Freezing level Above the summits.

Tuesday

Weather

Dry through the early hours with some patchy mist or fog by dawn. Sunny spells through much of the day but cloud will increase from the north later in the afternoon, perhaps bringing a few spots of rain in the evening.

Visibility

Very poor in any early fog patches, soon becoming god or very good. Moderate later in the afternoon as cloud increases and occasionally poor in the evening.

Hill fog

Periods above around 300 metres at first, soon lifting to occasional above 800 metres. Periods above 400 metres by evening.

Maximum winds above 400m

Westerly 30 mph.

Temperature

Valleys Plus 4 rising to 16 Celsius.
800 m Plus 9 Celsius.
Freezing level Above the summits.

Outlook

Wednesday

It should be mostly dry but rather cloudy, especially in the morning, with hill fog expected around 600 metres. A few bright or sunny spells may break through in the afternoon. Brisk westerly winds.

Thursday

Mostly cloudy and dry throughout the day with periods of hill fog and a westerly breeze. Maximum temperatures reaching the mid teens.

Friday

Another cloudy day with patchy drizzle possible, along with fairly extensive hill fog, especially on west-facing slopes. Moderate southwesterly winds.

Neuadd Rain (near Pontsticill)

Altitude 353 metres

Rainfall measured at 15:00 Sunday, 21 September 2014

  • Last 24 hours 0.2 mm
  • Last 48 hours 0.2 mm
  • Last 72 hours 2.4 mm

Rainfall data provided by the Environment Agency. The Met Office is not responsible for content provided by third parties and may remove this data without warning.

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Weather warnings for Wales

Weather forecast for Wales

The Enhanced Mountain forecast for Brecon Beacons 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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