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.
Thursday'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.
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.
Strong warm sunshine
High UV levels, feeling very warm when ascending, beware of dehydration and sunburn.
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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.
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.
Strong warm sunshine
High UV levels, feeling very warm when ascending, beware of dehydration and sunburn.
Viewing Forecast For
Brecon Beacons
Thursday 13th August 2026
Last updated
Wed 12th Aug 26 at
4:17PM
Summary for all mountain areas
Exceptionally hot in England and Wales, fire risk remains high. Despite haze and high cloud, beware sunburn and dehydration. Warm too in Scotland. Hill cloud and showery rain affects west Scotland from morning, patches spreading east; rain becomes frequent west Scotland later with heavy bursts.
Headline for Brecon Beacons
Hot sun but hazy/smokey; active fire Ebbw Vale
How windy? (On the summits)
Southerly 20mph early over the tops with some gustiness, soon beginning to ease and shifting westerly, 10-15mph much of the day.
Effect of the wind on you?
Small.
How Wet?
No rain expected
Cloud on the hills?
Hills likely cloud-free during daylight
As night falls, a low layer of fog over the sea may begin to encroach inland onto low slopes.
Chance of cloud free summits?
Above 90%
Sunshine and air clarity?
Mostly sunny, some high cloud around, most likely east. Hazy, smokey views due to Ebbw fire in the east.
How Cold? (at 750m)
22 to 24C, eastern hills rising locally to 26C with valley temperatures approaching an unusually hot 32C.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Friday 14th August 2026
Last updated
Wed 12th Aug 26 at
4:17PM
How windy? (On the summits)
Westerly 10-15mph. Later, shifting northwesterly and strengthening somewhat.
Effect of the wind on you?
Small, though a notable breeze will pick up late in the day, particularly western hills.
How Wet?
Patchy rain and drizzle
From dawn, light patchy rain affects many hills with a drizzle on high tops and western hills. Rain will become more frequent with heavy bursts for a few hours, at least.
Cloud on the hills?
Early low cloud, then varied over high terrain
From dawn, cloud banks at varied elevations, most extensive to the west; upper east terrain may start above cloud. Lifting through morning to shroud most high terrain for several hours, may well at times break or lift above the summits, but returning in rain.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Early glimpses of sun will give way to overcast conditions and largely poor visibility.
How Cold? (at 750m)
18 or 19C, beginning to lower from the west, finishing near 16C (though warmer east).
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Saturday 15th August 2026
Last updated
Wed 12th Aug 26 at
4:17PM
How windy? (On the summits)
Northerly 20-25mph at dawn, strong gusts over high terrain and downslope southward; easing to 15-20mph with time.
Effect of the wind on you?
Quite blustery in exposure early, easing to fairly small effects.
How Wet?
Likely dry
Small chance of a few spots of light rain from the north early in the day, mostly coastal Cambrians, otherwise entirely dry.
Cloud on the hills?
Lifting above summits
Cloud banks at varied heights in the morning, most extensive on the coastal Cambrians. Lifting after daybreak, may briefly be sheet-like over high terrain, but likely lifting entirely above summits by afternoon; odd banks may cling to coastal Cambrian summits.
Chance of cloud free summits?
Rising to 80%
Sunshine and air clarity?
Largely sunny, some high cloud around. Excellent visibility.
How Cold? (at 750m)
10C rising to 16C. Always a degree warmer on southern slopes, particularly east.
Freezing Level
Above the summits.
Planning Outlook
Some rain and a fresh northwesterly breeze slips into England and Wales on Friday. Though weekend, high pressure is never far away to the southwest, keeping conditions generally drier and brighter across England and Wales, though a northwesterly flow will bring some cloud to western hills. Scotland is more often cloudy with patchy rain, mostly north and west. Mixed conditions early next week with periods of rain and sunny bursts. High pressure remains present to the southwest of the British Isles, maintaining the possibility of drier brighter days; detail remains uncertain regarding risk of more unsettled weather. Temperatures likely nearer average.