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yellow Warnings have been issued for the United Kingdom

Brecon Beacons

Weather hazards over 300m on Sun 30 Aug 2015

High risk

No high risks
none

Medium risk

No medium risks
none

Low risk

Heavy persistent rain
Outbreaks of rain may be heavy giving difficult conditions underfoot.
Strong sunlight
Brief afternoon sunny spells give a risk of exposure to strong sunlight.

No risk

Blizzards
none
Heavy snow
none
Storm force winds
none
Gales
none
Severe chill effect
none
Persistent extensive hill fog
none
Thunderstorms
none

Sun 30 Aug 2015

Dry and chilly at first with clear spells and perhaps some valley mist patches. It will turn increasingly cloudy with occasional outbreaks of rain likely to arrive in the morning. The rain may turn quite heavy in places potentially creating slippery and difficult conditions, although cloud may thin at times to give some brighter spells in the afternoon,

Time
0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Weather
Light rain Light rain Heavy shower day Light rain Light rain Heavy rain
Precipitation probability
60% 70% 60% 60% 70% 60%

Visibility

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

Hill Fog

Hill fog above the summits initally then occasional hill fog above 400 metres arriving through the morning, with patches perhaps lowering to 200 metres during the evening.

Max wind above 400m

Northeasterly 25 mph.

Temperature

Valleys:
Plus 7 Celsius rising to plus 17 Celsius.
800m:
Plus 10 Celsius.
Freezing level:
Above the summits.

Recent Rainfall

Location:
Neuadd Rain (near Pontsticill)
Altitude:
353 m
Rainfall measured at:
0300 on Sun 30 Aug 2015
Last 24 hours:
0.0 mm
Last 48 hours:
3.8 mm
Last 72 hours:
7.4 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.

Mon 31 Aug 2015

Cloudy through much of the day with outbreaks of rain continuing, perhaps turning heavy in places. It should become drier during the late afternoon or evening.

Visibility

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

Hill Fog

Periods of hill fog above 400 metres with occasional patches down to 200 metres. This breaking and lifting late in the day.

Max wind above 400m

Northerly 25 mph.

Temperature

Valleys:
Plus 13 Celsius rising to plus 17 Celsius.
800m:
Plus 10 Celsius.
Freezing level:
Above the summits.

Tue 01 Sep 2015

A chilly start with some mist patches. There should be sunny spells through the day, although with the risk of isolated showers at times. Temperatures a little below average for the time of year in a northwesterly breeze, although still pleasant in sunny spells.

Wed 02 Sep 2015

Another chilly and perhaps misty start, then a similar day to Tuesday with variable cloud giving sunny spells and perhaps the odd shower. Winds should become light through the day.

Thu 03 Sep 2015

Some overnight mist patches. It should be largely dry through the day with light winds and some warm sunny spells. Just a slight chance of a few isolated showers.

Issued at: 0454 on Sun 30 Aug 2015