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.
Monday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Warm
Comfortable temperatures on the hills, 10 to 15C on tops, feeling pleasantly warm especially on lower ground. Beware of feeling cooler if exposed to wind on higher terrain.
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Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Warm
Comfortable temperatures on the hills, 10 to 15C on tops, feeling pleasantly warm especially on lower ground. Beware of feeling cooler if exposed to wind on higher terrain.
Viewing Forecast For
Brecon Beacons
Monday 24th August 2026
Last updated
Sun 23rd Aug 26 at
4:00PM
Summary for all mountain areas
Dry overall with sunshine and broken cloud. Some early low-level fog patches will soon disperse, briefly cloud drifting over some hill slopes, but most mountains often clear all day. Light-moderate south-southeasterly breezes, locally gusty, stronger easterly winds mid & south Wales.
Headline for Brecon Beacons
Increasingly windy, gusty. Dry with sun, clear hills.
How windy? (On the summits)
Easterly 15-20mph at first, rising from south during morning to 25mph, then little change afternoon, gusts 30mph. By evening up to dusk, rising a little further to gusty 30-35mph for a few hours.
Effect of the wind on you?
Fairly small early in day, but increasing quite blustery on summits, gusts may feel noticeable not just on tops. Mainly later affecting ease of walking and balance.
How Wet?
No rain expected
Cloud on the hills?
Hills clear
A few rare mist patches just at dawn on low slopes, soon dissipating.
Chance of cloud free summits?
Above 90%
Sunshine and air clarity?
Sunny to start, high cloud building and later may cover much of the sky in south. Good visibility, though a morning haze.
How Cold? (at 750m)
11C rising to 16C.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Tuesday 25th August 2026
Last updated
Sun 23rd Aug 26 at
4:00PM
How windy? (On the summits)
Easterly 20 to 25mph.
Effect of the wind on you?
Fairly small but feeling breezy over higher terrain, in places more noticeably gusty.
How Wet?
Rain unlikely most of day
Late evening into night, risk of scattered bursts of rain moving in from south.
Cloud on the hills?
Little or none
Patchy cloud banks on some eastern slopes for a few hours from dawn will all clear.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Sun and thin high cloud, may thicken to cover the sky for periods later. Visibility good, but slight haze particularly eastern areas.
How Cold? (at 750m)
11C rising to 16C.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Wednesday 26th August 2026
Last updated
Sun 23rd Aug 26 at
4:00PM
How windy? (On the summits)
South-southeasterly 15-20mph or at times less.
Effect of the wind on you?
Fairly small.
How Wet?
Risk thundery showers
Patchy drizzle, locally a burst of rain. Mainly during afternoon, risk local heavier bursts with possible thunder. Further thundery rain may develop onward into the night more widely from south.
Cloud on the hills?
Fairly extensive, lifting, some breaks
Cloud fairly widely shrouding hills above 400-600m from dawn, some lower banks south and east slopes. Tending to rise and break to tops, some patches may linger.
Chance of cloud free summits?
20% rising to 60%
Sunshine and air clarity?
Occasional weak sun through high cloud, often overcast. Hazy start, visibility improving to be good when dry.
How Cold? (at 750m)
13C rising to 16C, quite humid.
Freezing Level
Above the summits.
Planning Outlook
Low pressure to the south will develop and drift across Britain into the second half of this week bringing increasingly wet conditions widely. Areas of rain will drift northward during Wednesday, possibly thundery showers forming over England & Wales. Heavy and thundery rain likely affects England, Wales & southern Scotland on Thursday-Friday, potentially prolonged heavy falls bringing a risk of flooding locally. Northwest Scotland likely driest. The eastern Highlands often covered in low cloud. Strong gusty easterly winds prevail for a few days through midweek. Into the weekend it remains unsettled with areas of rain and heavy showers, plus cooler northwesterly winds developing.