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.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
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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.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Viewing Forecast For
Brecon Beacons
Monday 31st August 2026
Last updated
Sun 30th Aug 26 at
4:31PM
Summary for all mountain areas
Showers scattered across most hills through morning, locally clustering for frequent falls with heavy bursts. Showers gradually clear eastward, spotty light rain fades out with time as sunny bursts break out (though weakened by high cloud). Cool-to-mild, but feeling chilly in a strengthening wind.
Headline for Brecon Beacons
Windy with showers, both easing afternoon
How windy? (On the summits)
Northwesterly 25 to 35mph, strongest morning up to middle of day with gusts to 40mph, then tending to lessen gradually afternoon into evening with a westerly shift, finishing near 20mph or lower.
Effect of the wind on you?
Blustery over hills, making walking uncomfortable on exposed high terrain and feeling rather cool. Effects gradually lessen, to fairly small later.
How Wet?
Morning showers, fading
A scattering of showers for a few hours morning into middle of day, brief heavier moments, and most frequent towards mid-Wales. Fading to be largely dry, a brief lingering drizzle on the summits.
Cloud on the hills?
Lowest west though morning, breaks to tops
Covering hills fairly widely with some lower banks in western areas early in day. Bases rise higher, beginning to break and clear most hills into afternoon, most summits becoming clear of cloud.
Chance of cloud free summits?
30% rising to 80%
Sunshine and air clarity?
Fairly cloudy, occasional sun breaking through, increasingly frequent with time; high cloud later builds. Visibility often very good, some haze west.
How Cold? (at 750m)
9 or 10C, little change all day. Feeling near to freezing directly in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Tuesday 1st September 2026
Last updated
Sun 30th Aug 26 at
4:31PM
How windy? (On the summits)
West to southwesterly 20 to 25mph.
Effect of the wind on you?
Breezy, starting to affect ease of walking on exposed high tops, feeling cool.
How Wet?
Damp at times
Patchy drizzle and light rain most frequent west Wales. Smaller amounts further east, though a few showery clusters may spread more widely.
Cloud on the hills?
Fairly extensive, lowest west
Banks of cloud often cap higher slopes above 600 to 800m, lowest and most persistent in western areas. Some breaks toward upper slopes in east Wales.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Largely cloudy, some brighter moments east Wales. Visibility often good below cloud, but reduced if in rain.
How Cold? (at 750m)
10 or 11C, rising a degree afternoon. Feeling like 3 to 5C in the wind on tops.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Wednesday 2nd September 2026
Last updated
Sun 30th Aug 26 at
4:31PM
How windy? (On the summits)
Southwesterly 30-35mph, gusty over the tops, and strengthening for a time, gusting up to 45-50mph.
Effect of the wind on you?
Walking impeded in exposure, more strenuous moments with buffeting affecting balance; feeling chilly.
How Wet?
Rain into drizzle
Several hours of morning rain, briefly heavy. Rain will ease into drizzle, tending to fade, but staying damp on high terrain and southern slopes. A few patches of rain may return later.
Cloud on the hills?
Extensive, some improvement
Cloud soon fills in extensively from 600m upward, often lower around rain, widely to 400m and lower on south slopes during extended rain. As rain eases, bases will lift, breaking up somewhat, approaching 700-800m, though may lower again on south slopes.
Chance of cloud free summits?
20%, rising to 50%
Sunshine and air clarity?
A few sunny glimpses break out on low slopes later, good visibility here. Largely overcast and dull on high terrain.
How Cold? (at 750m)
11 to 14C, trending towards the higher end of the range and staying warm into night. Feeling like 3 to 6C in strongest wind.
Freezing Level
Above the summits.
Planning Outlook
A generally unsettled outlook during the first two weeks of September with frequent rain and strong winds. Low pressure dominates and a series of frontal systems move in from the Atlantic. West to southwesterlies, often gale force over the mountains in the second half of this coming week. Heavy rain most prolonged in the west where increasingly wet underfoot, streams rising to be in spate. Low cloud often covering the hills, rarely clearing western summits. Temperatures varying, some notably cooler days for Scotland, at times more humid air mainly toward the south. A few brighter windows will break out, mostly south and eastern areas, but always brief and any detail on timing remains uncertain.