• home

We’ve upgraded

Old Met Office computer

This page will be removed later in the year and may not contain the latest information. Please use our new page:

Why have we done this?

RainfallPressureCloud amount forecastWarnings
Weather mapWindTemperatureUV
Forecast
Back Stop Play Next 
 Mon   Wed   Thu   Fri 
Not available Not available Not available Not available Not available Not available Not available
UK forecast
Please wait.
Key to map Guide
Updated: 0641 on Mon 30 Jun 2014
Go to region

Go to location
Go to postcode location
Zoom out
Zoom map SW Scotland, Lothian Borders North West England North East England Yorkshire & Humber Wales East Midlands West Midlands East of England London & South East England South West England Northern Ireland Central, Tayside & Fife Grampian Highlands & Eilean Siar Orkney & Shetland Strathclyde

Digital Map Data:
© Collins Bartholomew Ltd (2006)
Postcode information:
© Royal Mail Group PLC (2006)

Brecon Beacons: forecast cloud

Thursday, 28 August 2014: dawn to dusk

Printable view Forecast issued: 0413 on Thursday, 28 August 2014

Overview for Thursday

Showery rain this morning, moving eastwards across the park, but drier and brighter later this afternoon. Windy, with gales possible over the peaks.

Hazards Risk Explanation
Blizzards No Risk  
Heavy snow No Risk  
Storm force winds No Risk  
Gales Medium Southwesterly winds could reach mean speeds of 40mph, with gusts to around 50mph by late evening.
Severe chill effect Low Feeling closer to 5C in exposure to the gale force southwesterly winds.
Persistent and extensive hill fog Medium Low cloud bases are expected at times through the day.
Thunderstorms No Risk  
Heavy persistent rain No Risk  
Strong Sunlight Low Moderate UV levels during the afternoon.

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
Light rain showers
Light rain showers
Heavy rain showers
Heavy rain showers
Sunny intervals
Sunny intervals
20% 70% 80% 20%

Detailed mountain weather forecast: Brecon Beacons

Thursday

Weather

A band of showery rain will push eastwards across the park later this morning and into the afternoon, with some heavier downpours and strong gusts likely in association. Later this afternoon will be much improved though, with dry and bright conditions and a few spells of sunshine to end the day. It will be rather breezy throughout, especially over exposed ridges and summits.

Visibility

Good or very good, although temporarily reducing to moderate or poor during showers. Poor in any hill fog.

Hill fog

Bases 500-700 metres fairly widely, with a few patches down to 200 metres in the southwest. This breaking and mostly lifting above the summits through the afternoon.

Maximum winds above 400m

Southwesterly 25-30mph with gusts 35-40mph near any showers. Increasing to mean 35-40mph with gusts 45-50mph later in the evening.

Temperature

Valleys Plus 12 becoming 19 Celsius.
800 m Plus 11 Celsius.
Freezing level Above the summits.

Friday

Weather

Remaining unsettled and windy with scattered blustery showers. Some of these may turn thundery or merge into longer spells of rain into the afternoon. Hill fog is likely to be rather extensive during the afternoon, and gales are expected to leading to a significant chill effect.

Visibility

Very good, but reducing to moderate or poor in rain or showers. Very poor in hill fog.

Hill fog

A few patches of fog above 700 metres during the early morning. Then nil for a time until mid-afternoon, when bases will fall to 400-600 metres widely.

Maximum winds above 400m

Southwesterly 40-45mph with gusts 50-55mph.

Temperature

Valleys Plus 12 becoming 18 Celsius.
800 m Plus 11 Celsius.
Freezing level Above the summits.

Outlook

Saturday

A brighter day than of late with sunny spells and a scattering of showers. The showers may ease from the west later in the day. Westerly winds will be much lighter than on Friday, although perhaps still gusty at times near showers.

Sunday

Cool, dry and largely clear overnight, then staying mostly dry with bright or sunny spells during the day. There's a chance of a few showers, but these only light.

Monday

Rather cloudy with some patchy light rain possible. Brighter or clearer conditions are likely towards the end of the day. Light to moderate winds. Hill fog at times.

Neuadd Rain (near Pontsticill)

Altitude 353 metres

Rainfall measured at 03:00 Thursday, 28 August 2014

  • Last 24 hours 3.6 mm
  • Last 48 hours 9.2 mm
  • Last 72 hours 21.0 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.

Webcams

The Met Office is not responsible for the content of external sites. If you would like to consider adding a link to your webcam, please contact us.

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

Get updates