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.
Wednesday's Forecast
Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
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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Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
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
Wednesday 26th August 2026
Last updated
Tue 25th Aug 26 at
4:29PM
Summary for all mountain areas
East Scotland, the Pennines, and Wales start cloudy, this lifting, dissipating over much of Scotland. Early showery rain and cloud in Wales migrates to England and southwest Scotland, thundery showers following over Wales and England; driest/clearest northwest Scotland. Warm, humid, and breezy.
Headline for Brecon Beacons
Early cloud lifts, risk thundery showers; warm and humid
How windy? (On the summits)
Southeasterly 15-25mph, gusty early, but tending to ease with time.
Effect of the wind on you?
Fairly small.
How Wet?
Risk thundery showers
Patchy drizzle, locally a burst of rain in the morning, but soon largely dry. During afternoon, risk local heavier bursts with possible thunder; location of showers uncertain, may stay towards the east or mid-Wales. Further thundery rain develops from the south in the later overnight hours.
Cloud on the hills?
Extensive early, variably lifting, clearest later
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, and variably lowering in rain. Increasingly breaking above summits later in the day.
Chance of cloud free summits?
20% rising to 50%, later 70%
Sunshine and air clarity?
Overcast to start, sun breaking out, some extended sunny windows later but some high cloud around too. Hazy start, visibility improving to be good when dry.
How Cold? (at 750m)
13C rising to 16C, quite humid. Staying elevated and may rise another degree into night, particularly east and north areas.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Thursday 27th August 2026
Last updated
Tue 25th Aug 26 at
4:29PM
How windy? (On the summits)
Southeasterly 15-25mph, shifting southwesterly with time; quite gusty much of the day.
Effect of the wind on you?
Fairly small, but nuisance gusts affect comfort of walking at times.
How Wet?
Thundery downpours
Thundery rain from overnight breaks into showers, heavy bursts likely and a chance of thunderstorms developing. Beware rapidly rising streams and local flood risk.
Cloud on the hills?
Gradually lifting, increasingly clear tops
Varied banks of cloud at most heights in the morning, gradually lifting, shrouding high terrain for a time, particularly when showers occur; high summits clearing afternoon, though banks return during thunderstorms.
Chance of cloud free summits?
30% rising to 60%
Sunshine and air clarity?
Patchwork of cloud and sunshine. Visibility becomes very good out of showers.
How Cold? (at 750m)
13 or 14C, starting a degree warmer west; fluctuating by several degrees around showers.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Friday 28th August 2026
Last updated
Tue 25th Aug 26 at
4:29PM
How windy? (On the summits)
Southwesterly 15-25mph, some gustiness; later shifting westerly, perhaps easing for a time.
Effect of the wind on you?
Fairly small, gusty periods on high terrain.
How Wet?
Showery rain
Spots of rain drift from the southwest from dawn, light in nature, more frequent showery rain forming, for a few hours at least.
Cloud on the hills?
Variable, but high terrain stays covered
Hills shrouded from middle slopes up in the morning, lifting, breaks approach 700m for a time, though south aspects more often covered. Cloud returns more extensively where showery rain arrives.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Mostly cloudy, a few glimpses of sun here and there. Varied visibility, though very good where out of cloud and rain.
How Cold? (at 750m)
12 to 14C, rising to 15C on eastern hills.
Freezing Level
Above the summits.
Planning Outlook
Heavy, thundery rain likely affects England, Wales & southern Scotland on Thursday and Friday, potentially prolonged heavy falls bringing a risk of local flooding. A westerly wind will establish into the weekend, drawing cloud and drizzle onto western high terrain, several frontal systems sweeping more broadly across the country. The strongest wind and heavy rain may pass mostly across England and Wales, with the lightest rain in west Scotland. Best chance of cloud base rising towards higher terrain in western areas, perhaps briefly to higher summits, but the hills more often shrouded, patches to low slopes around heaviest rain. A west-southwesterly weather track prevails next week: cloud and drizzle on western hill groups (particularly west Scotland), breezy, areas of rain regularly spreading more widely.