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
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
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.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
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
Wednesday 20th May 2026
Last updated
Tue 19th May 26 at
4:10PM
Summary for all mountain areas
Windy with strong gusts, briefly lighter early in Scottish Highlands. Morning showery rain and low cloud; improving afternoon as patchy sun breaks out, cloud lifting to high terrain with summit breaks, and most areas substantially dry by later afternoon. Low cloud lingers in Wales and NW Scotland.
Headline for Brecon Beacons
Blustery, powerful gusts early; morning rain, lingering cloud
How windy? (On the summits)
West-southwesterly 30-35mph, gusty over high terrain, particularly early when may reach 40mph. A slight easing trend towards 25-30mph, may occasionally gust stronger over tops.
Effect of the wind on you?
Walking impeded in exposure and often strenuous and feeling chilly; considerable buffeting possible over high terrain early where balance will be challenged. An easing trend later.
How Wet?
Morning showery rain, mostly dry afternoon
Showery rain driving in from the west through morning, a lingering drizzle on highest tops. Rain mostly eases early-to-mid afternoon, a few odd spots here and there but most hills dry.
Cloud on the hills?
Fairly extensive
A sheet of cloud shrouds the hills at dawn, to lower western slopes. Bases slowly lift towards 700m on east and northern slopes, a few high breaks possible later in the day. High tops will struggle to clear, and west/southern slopes stay shrouded above 500-600m. Cloud more widely extensive again later in the day.
Chance of cloud free summits?
20%
Sunshine and air clarity?
A few glimpses of sun but mostly cloudy. Visibility starts poor, improving as cloud and rain break, best in the north.
How Cold? (at 750m)
7C rising to 10C, mildest Black Mountains where may approach 11C. Staying elevated into night. Feeling around freezing in strongest wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Thursday 21st May 2026
Last updated
Tue 19th May 26 at
4:10PM
How windy? (On the summits)
Southerly 20-30mph. Strongest winds west, and also quite gusty, including downslope to the north early.
Effect of the wind on you?
Walking strenuous in exposure during strongest wind with a cool feeling. Considerable buffeting from gusts.
How Wet?
Morning drizzle fades
Drizzly and damp in early cloud, the drizzle possibly to middle slopes or lower on southern slopes. Drizzle rises to just the tops through morning as cloud lifts, then largely dry afternoon.
Cloud on the hills?
Extensive early, improving
Cloud shrouds the hills to low slopes at dawn, as low as 200m southern aspects. Bases rise after sunrise, approaching 700-800m southern aspects, northern aspects soon clearer. By later afternoon, breaks off summits increasingly likely.
Chance of cloud free summits?
10%, later rising to 60%
Sunshine and air clarity?
Overcast and dull with poor visibility early. Sunny glimpses breaking out through afternoon with improved visibility.
How Cold? (at 750m)
12 to 14C. Feeling like 5C in strongest wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Friday 22nd May 2026
Last updated
Tue 19th May 26 at
4:10PM
How windy? (On the summits)
Southerly sustained 20-25mph; gusty, often approaching 30mph, including downslope north early.
Effect of the wind on you?
Breezy in exposure all day with buffeting gusts, to lower terrain early, the strongest affecting stability.
How Wet?
Substantially dry
Late in the day, a rising risk of patchy rain. May well be dry all of daylight.
Cloud on the hills?
Little expected
Thin ribbons of cloud on some southern slopes early, mist in sheltered valleys too. This lifting after sunrise and largely dissipating for cloud-free hills.
Chance of cloud free summits?
Rising to 90%
Sunshine and air clarity?
Mostly sunny but weakened by a veil of high cloud. Very good visibility, but a morning haze to the south.
How Cold? (at 750m)
14C rising to 16C.
Freezing Level
Above the summits.
Planning Outlook
Pressure rises as the weekend approaches, facilitating south-southwesterly wind; much milder temperatures arriving, likely warm in England and Wales by the weekend. Blustery wind for a few days, quite gusty too, including to lower slopes early; still feeling chilly on high Scottish tops, and strongest gusts will challenge stability. Patchy rain and hill cloud will continue to affect Scotland as well, most often in the west. Increasingly dry and sunny England and Wales, but always with a risk of cloud and some rain, including early valley mist in sheltered areas. Higher pressure is indicated into next week as well. Precise detail of the high pressure core remains uncertain - the risk of strong wind and spells of rain possible for most areas, but also extended bright and warm periods too.