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Updated: 1521 on Wed 18 Jun 2014
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Brecon Beacons: latest pressure

Friday, 1 August 2014: dawn to dusk

Printable view Forecast issued: 0442 on Friday, 1 August 2014

Overview for Friday

A cloudy day with showery rain, becoming heavier and more persistent 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 Medium Extensive at 500m at first, becoming patchy, but as low as 300m at times.
Thunderstorms Low Low risk of an isolated thundery downpour.
Heavy persistent rain Medium Showery rain throughout, possibly reaching totals of 40mm in 24 hours.
Strong Sunlight No Risk  

key to hazards and forecast content

Weather summary and probability of precipitation for Friday
Dawn to 0900 0900 to 1200 1200 to 1500 1500 to dusk
Light rain showers
Light rain showers
Light rain showers
Light rain showers
Heavy rain showers
Heavy rain showers
Heavy rain showers
Heavy rain showers
70% 70% 70% 70%

Detailed mountain weather forecast: Brecon Beacons

Friday

Weather

A largely cloudy day with showery rain. The rain will become more persistent throughout the day, particularly on western slopes. Rain will be heavy at times. Cloud bases will generally be around 500m, lifting and breaking at times through the day, but may drop as low as 300m in heavy rain. Winds will be fresh southwesterly.

Visibility

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

Hill fog

Extensive above 500m, possibly as low as 300m at times.

Maximum winds above 400m

Southwest 20mph.

Temperature

Valleys Plus 14 Celsius increasing plus 19 Celsius.
800 m Plus 12 Celsius.
Freezing level Above the summits.

Saturday

Weather

Rain, heavy at times, will gradually move northeast to be followed by scattered showers. The showers becoming less frequent throughout the day. Cloud bases will be as low as 300m at times throughout the morning, particularly over southern slopes. Winds generally northwesterly moderate.

Visibility

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

Hill fog

Patchy at 300m throughout the morning, but lifting and breaking through the afternoon.

Maximum winds above 400m

Southwest becoming northwest 35 mph.

Temperature

Valleys Plus 13 Celsius increasing plus 19 Celsius.
800 m Plus 10 Celsius.
Freezing level Above the summits.

Outlook

Sunday

Some showery rain possible at first, then clearing to leave a mainly dry day with sunny spells and isolated showers. Breezy, particularly at height, easing later.

Monday

Sunny spells and scattered showers. Winds lighter than Sunday. Increasingly cloudy from the west later with some showery rain possible.

Tuesday

Mainly dry at first with some bright or sunny spells. Cloud increasing later with some showers or rain possible.

Neuadd Rain (near Pontsticill)

Altitude 353 metres

Rainfall measured at 03:00 Friday, 01 August 2014

  • Last 24 hours 3.6 mm
  • Last 48 hours 3.6 mm
  • Last 72 hours 3.6 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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