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Updated: 0428 on Thu 17 Apr 2014
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Brecon Beacons: latest wind

Thursday, 17 April 2014: dawn to dusk

Printable view Forecast issued: 0359 on Thursday, 17 April 2014

Overview for Thursday

Cloudier than recent days, with perhaps some patchy light rain or drizzle. Some brighter spells are also possible. Turning cooler and clearer in the evening.

Hazards Risk Explanation
Blizzards No Risk  
Heavy snow No Risk  
Storm force winds No Risk  
Gales No Risk  
Severe chill effect Low Strong northwesterly winds, making it feel more like minus 2 or 3 over the highest peaks.
Persistent and extensive hill fog Medium Persistent hill fog above 400m, with patches down to 300m, lifting and breaking through the day.
Thunderstorms No Risk  
Heavy persistent rain No Risk  
Strong Sunlight No Risk  

key to hazards and forecast content

Weather summary and probability of precipitation for Thursday
Dawn to 0900 0900 to 1200 1200 to 1500 1500 to dusk
Sunny intervals
Sunny intervals
Cloudy
Cloudy
Cloudy
Cloudy
Sunny intervals
Sunny intervals
20% 30% 10% 0%

Detailed mountain weather forecast: Brecon Beacons

Thursday

Weather

Some brightness in the east at first, otherwise generally rather cloudy, with some patchy light rain or drizzle possible in the morning, particularly across western facing slopes. Through into the afternoon, cloud will begin to lift and break, and it will become dry by evening. Turning cooler and clearer from the north in the evening.

Visibility

Generally good or very good, but moderate in rain, poor in drizzle and very poor in hill fog.

Hill fog

Broken to blanket cloud giving some persistent hill fog above 400 metres this morning, with occasional patch down to 300 metres, particularly on western and northern facing slopes. Through into the afternoon, cloud lifting and breaking with occasional patches down to 600 metres. Then hill fog generally clearing in the evening.

Maximum winds above 400m

West-northwesterly 40mph.

Temperature

Valleys Plus 4 Celsius, increasing to plus 14 Celsius.
800 m Plus 9 Celsius, becoming plus 5 Celsius later.
Freezing level Above the summits.

Friday

Weather

Remaining dry and clear during the early hours, leading to a chilly start on Friday. Light winds throughout the day with dry conditions continuing and plenty of sunny spells. Some patchy cloud is possible on higher slopes in the morning, but quickly clearing. It will feel pleasant when walking in the sunshine, but there will be a risk of moderate to high UV levels.

Visibility

Generally excellent or very good, but very poor in any early hill fog.

Hill fog

Low risk in early patchy cloud above 700m.

Maximum winds above 400m

Northwesterly 30mph at first.

Temperature

Valleys Plus 4 Celsius, increasing to plus 14 Celsius.
800 m Plus 3 Celsius, increasing plus 5 Celsius.
Freezing level Above the summits.

Outlook

Saturday

A dry day with plenty of sunshine and light to moderate easterly winds. It will feel warm when walking, and again there will be a risk of moderate to high UV levels in exposure. Cloud will start to increase into the evening. Some patchy hill fog possible over the highest peaks later.

Sunday

Becoming increasing cloudy through the morning, with winds also increasing from the northeast. Some sunny spells are likely too, particularly on western slopes at first. Rain will spread westwards through the day, possibly heavy at times and perhaps wintry at first over the highest peaks. Risk of gales over the peaks later.

Monday

Cloudy with hill fog and intermittent rain, possibly heavy at times, throughout the day. There is the odd brighter spell possible too. Winds remaining fresh to strong from the east, particularly over the highest summits. Cold in the wind and rain.

Neuadd Rain (near Pontsticill)

Altitude 353 metres

Rainfall measured at 03:00 Thursday, 17 April 2014

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