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Not available Not available 0100 on Sun 19 May 2013 1300 on Sun 19 May 2013 0100 on Mon 20 May 2013 1300 on Mon 20 May 2013 0100 on Tue 21 May 2013 1300 on Tue 21 May 2013 1300 on Wed 22 May 2013
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Updated: 0811 on Sat 18 May 2013
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Brecon Beacons: forecast pressure

Saturday, 18 May 2013: dawn to dusk

Printable view Forecast issued: 0533 on Saturday, 18 May 2013

Overview for Saturday

A dry and bright day across the area, with plenty of sunny spells and feeling pleasantly warm.

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 No Risk  
Thunderstorms No Risk  
Heavy persistent rain No Risk  
Strong Sunlight Medium Sunny spells at times throughout the day will give a moderate risk of sunburn.

key to hazards and forecast content

Weather summary and probability of precipitation for Saturday
Dawn to 0900 0900 to 1200 1200 to 1500 1500 to dusk
Mist
Mist
Sunny intervals
Sunny intervals
Sunny intervals
Sunny intervals
Sunny intervals
Sunny intervals
0% 0% 10% 0%

Detailed mountain weather forecast: Brecon Beacons

Saturday

Weather

A largely dry and bright day with good spells of sunshine developing and feeling pleasantly warm. Northwesterly winds will strengthen slightly through the day and also become westerly.

Visibility

Generally good or very good, but very poor in early valley fog.

Hill fog

Some isolated patches of valley fog and low cloud at first, soon clearing.

Maximum winds above 400m

Northwesterly 10-20mph.

Temperature

Valleys Plus 3, becoming plus 15 Celsius.
800 m Plus 6 Celsius.
Freezing level Above the summits.

Sunday

Weather

Rather cloudy start with some low cloud and mist and fog patches in the valleys. Otherwise, mainly dry on Sunday with patchy cloud and some brighter interludes at times. Best of the suuny spells during the afternoon period.

Visibility

Generally good or very good, but very poor in fog.

Hill fog

Some mist and fog patches through the valley floors at first. Well broken cloud at 500 metres, giving isolated patches of hill fog at first. Lifting above summits through the morning.

Maximum winds above 400m

Northwesterly 10-15mph, becoming 15-25mph through the afternoon.

Temperature

Valleys Plus 6, becoming plus 13 Celsius.
800 m Plus 5 Celsius.
Freezing level Above the summits.

Outlook

Monday

Remaining generally dry with patchy cloud and some sunny spells. Best of the brightness will be across the west. Strengthening northerly winds through the day.

Tuesday

Another rather cloudy and largely dry day, but with more limited sunny spells in the west and perhaps some patchy light rain across the east. Feeling cool in the northerly wind.

Wednesday

A largely dry day, with more in the way of brightness compared to Tuesday, but still the chance of some patchy light rain at times. Northwesterly winds making it feel cool for the time of year.

Neuadd Rain (near Pontsticill)

Altitude 353 metres

Rainfall measured at 03:00 Saturday, 18 May 2013

  • Last 24 hours 0.0 mm
  • Last 48 hours 2.0 mm
  • Last 72 hours 2.0 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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