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
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.
Thunderstorms
Bursts of rain, torrential downpours with hail, risk of thunder and lightning. Seek shelter where possible.
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.
Flooding
Fast-flowing rivers and streams. Some routes may be impassable due to flooding.
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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.
Thunderstorms
Bursts of rain, torrential downpours with hail, risk of thunder and lightning. Seek shelter where possible.
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.
Flooding
Fast-flowing rivers and streams. Some routes may be impassable due to flooding.
Viewing Forecast For
Brecon Beacons
Thursday 27th August 2026
Last updated
Wed 26th Aug 26 at
4:27PM
Summary for all mountain areas
Heavy, thundery rain moves north through Wales and England, showery thunderstorms following in Wales; beware sudden gusts, rapidly rising streams, and local flooding. Hill cloud and a little patchy rain in east Scotland; much of west Scotland clear of cloud, though some haze around.
Headline for Brecon Beacons
Thunderstorms, later showery; risk local flooding
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?
Thunderstorms
Thundery rain from overnight breaks into showers with time, heavy bursts continuing and further thunderstorms developing. Beware rapidly rising streams and local flood risk.
Cloud on the hills?
Extensive
Blanket cloud to low slopes from dawn and through morning. As rain breaks into showers, cloud will lift and break up somewhat, perhaps later clearing tops briefly but high terrain often covered around and after rain.
Chance of cloud free summits?
10% rising to 40%
Sunshine and air clarity?
Overcast and dull with poor visibility through morning. Sun bursts break out, very good visibility out of fog and rain, but variably becoming poor again around rain.
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
Wed 26th Aug 26 at
4:27PM
How windy? (On the summits)
Southwesterly 15-25mph, some gustiness; later shifting westerly, perhaps lessening 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.
Viewing Forecast For
Brecon Beacons
Saturday 29th August 2026
Last updated
Wed 26th Aug 26 at
4:27PM
How windy? (On the summits)
Generally southwesterly, some variability, 25-40mph, and may strengthen further for a time with strong gusts.
Effect of the wind on you?
Strenuous walking in exposure much of the day, walking more arduous during strongest wind with notable wind chill.
How Wet?
Rain most of the day
Rain through morning, some heavy falls come and go. Rain will ease briefly, though a lingering drizzle on high terrain, with broader areas of rain returning; heaviest rain likely in the morning.
Cloud on the hills?
Extensive
Cloud rarely breaking above 500m, bases regularly approaching low slopes, and to valley level on southern slopes during heaviest rain. A brief window of higher bases likely but summit unlikely clear.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Mostly overcast, largely dull on high terrain with poor visibility. A few glimpses of sun may break out late in the day on lowest slopes.
How Cold? (at 750m)
12 or 13C. Feeling just above freezing in strongest direct wind.
Freezing Level
Above the summits.
Planning Outlook
Heavy, thundery rain affects England, Wales & eastern Scotland on Friday, prolonged heavy falls bringing a risk of local flooding. A westerly wind will establish over 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 Scotland. Hills often shrouded in cloud, low patches around rain; only local improvements. A west-southwesterly weather track prevails next week: cloud and drizzle on western hill groups (particularly west Scotland), breezy with areas of rain regularly spreading widely at times. A few brighter interludes through the week, and a chance of a more settled window in the south into the weekend.