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Updated: 1357 on Thu 31 Jul 2014
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Brecon Beacons: forecast wind

Thursday, 31 July 2014: dawn to dusk

Printable view Forecast issued: 0500 on Thursday, 31 July 2014

Overview for Thursday

Cloudy with patchy light rain at first. Showers or longer spells of rain, heavy at times and a risk of thunder later.

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 Extensive above 500m at first, patchy in showers later. Mainly on western slopes.
Thunderstorms Medium Showery rain may turn thundery through the afternoon.
Heavy persistent rain No Risk  
Strong Sunlight Low Moderate to high UV levels in any sunny spells.

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
Cloudy
Cloudy
Heavy rain showers
Heavy rain showers
Heavy rain showers
Heavy rain showers
Heavy rain showers
Heavy rain showers
20% 70% 60% 30%

Detailed mountain weather forecast: Brecon Beacons

Thursday

Weather

A cloudy but mainly dry start with extensive hill fog, particularly on western slopes. Cloud will lift and break through the morning to bring some brief and isolated sunny spells. An organised area of showery rain will then spread southeastwards across the park around the middle of the day, turning heavy at times with hill fog and the risk of thunder. Winds will strengthen at the end of the day.

Visibility

Very good except moderate in rain, poor in heavy rain and very poor in hill fog.

Hill fog

Extensive above 500m at first, becoming patchy and related to showers later, mainly on western slopes.

Maximum winds above 400m

Southwesterly 20-25 mph, increasing to 30-35 mph during the evening.

Temperature

Valleys Plus 15 Celsius increasing to 22 Celsius.
800 m Plus 10 Celsius.
Freezing level Above the summits.

Friday

Weather

A fairly cloudy day with light showery rain, but also a few brighter spells at first. Cloud will increase throughout the afternoon as an area of persistent and occasionally heavy rain approaches from the southwest. The combination of extensive low cloud and hill fog, with heavy downpours later will give hazardous walking conditions towards the end of the day. Moderate winds.

Visibility

Good, but moderate in rain, poor in heavy rain and very poor in hill fog.

Hill fog

Becoming extensive above 400m later in the day, mainly on western slopes.

Maximum winds above 400m

Southwesterly 20-25 mph.

Temperature

Valleys Plus 15 Celsius increasing to 22 Celsius.
800 m Plus 10 Celsius.
Freezing level Above the summits.

Outlook

Saturday

Rain, heavy at times, and associated hill fog will gradually clear the range through the latter part of the day. Sunny spells and isolated showers will then follow.

Sunday

A much drier day than Saturday. There will be a mixture of sunshine and showers throughout the day. It will be breezy, but feel warm in any sunny spells when walking out of the wind.

Monday

Another day of sunshine and showers, but winds will be lighter than on Sunday. Feeling warm again in the sunshine, but tending to cloud over more later in the day.

Neuadd Rain (near Pontsticill)

Altitude 353 metres

Rainfall measured at 03:00 Thursday, 31 July 2014

  • Last 24 hours 0.0 mm
  • Last 48 hours 0.0 mm
  • Last 72 hours 1.6 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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