Brecon Beacons
Includes all higher summits in the southern half of Wales: the Bannau Brycheiniog / Brecon Beacons National Park, southern Cambrian Mountains and highest Preseli hills.
Tuesday's Forecast
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Clear
Excellent or superb visibility, no navigation issues.
Hot
Heatwave conditions. Very high temperatures, rising to 20C+ on high tops, approaching 30C in some valleys. Beware of heat stroke and dehydration. Carry plenty of liquid.
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Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Clear
Excellent or superb visibility, no navigation issues.
Hot
Heatwave conditions. Very high temperatures, rising to 20C+ on high tops, approaching 30C in some valleys. Beware of heat stroke and dehydration. Carry plenty of liquid.
Viewing Forecast For
Brecon Beacons
Tuesday 11th August 2026
Last updated
Mon 10th Aug 26 at
1:18PM
Summary for all mountain areas
Fine and widely sunny - albeit patches of high thin cloud. In Scotland cloudy at times near west coast, whilst centred on the SE Highlands, persistent low cloud in the morning. Becoming very warm England and Wales.
Headline for Brecon Beacons
Dry, warm and sunny.
How windy? (On the summits)
Southerly 10 or 15mph.
Effect of the wind on you?
Negligible
How Wet?
Rain not expected
Cloud on the hills?
Very unlikely
Fog here and there Black Mountains and Radnor areas for a few hours after dawn. Higher areas likely to be above the cloud.
Chance of cloud free summits?
Almost certain
Sunshine and air clarity?
More or less unbroken sunshine and excellent or superb visibility - locally foggy at first and then a haze east Wales.
How Cold? (at 750m)
14C rising to 23C, although a little less hot southwest Wales.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Wednesday 12th August 2026
Last updated
Mon 10th Aug 26 at
1:18PM
How windy? (On the summits)
Southerly 10-15mph.
Effect of the wind on you?
Negligible
How Wet?
Rain very unlikely
Cloud on the hills?
Little if any
Chance of cloud free summits?
Almost certain
Sunshine and air clarity?
Extensive sunshine. Good visibility although a haze.
How Cold? (at 750m)
15 rising to 25C.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Thursday 13th August 2026
Last updated
Mon 10th Aug 26 at
1:18PM
How windy? (On the summits)
Southerly 15mph.
Effect of the wind on you?
Mostly negligible
How Wet?
Substantially or completely dry
Small chance of a burst of rain - perhaps just a few spots.
Cloud on the hills?
Little if any
Chance of cloud free summits?
90%
Sunshine and air clarity?
Periods of sunshine - sometimes through high level cloud. Hazy.
How Cold? (at 750m)
Reaching an unusually warm 25 to perhaps 28C - the highest temperatures on easternmost summits.
Freezing Level
Above the summits.
Planning Outlook
Chance of bursts of rain, possibly locally thundery on Wednesday NW England northwards, with further occasional rain (and low cloud) later in the week, mainly across the W & NW Highlands. The almost completely dry and warm weather will persist elsewhere - very hot indeed Thursday. Underfoot conditions will remain exceptionally dry. There may be little change in the pattern into next week - although there is uncertainty in the track of oncoming rain on low cloud at the end of the weekend.