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
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.
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.
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.
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
Thursday 21st May 2026
Last updated
Wed 20th May 26 at
3:59PM
Summary for all mountain areas
Morning rain in Scotland passes north, afternoon drizzle, rain returns in evening to central/west Munros; slick rock surfaces. Early rain soon clears English hills, afternoon drizzle in Lakeland. Morning drizzle in Wales fades, hills increasingly clear. Strong gusty wind too, local gale-force gusts. Warm Pennines and Wales.
Headline for Brecon Beacons
Early drizzle and gusty wind, both easing by afternoon
How windy? (On the summits)
Southwesterly 35-40mph at dawn, notable gusts including downslope. Soon beginning to ease and gradually trending southerly through the day, speeds ending 15-25mph by evening, strongest in the west.
Effect of the wind on you?
Walking arduous at dawn, considerable buffeting from gusts challenging stability; also feeling cool in the morning. An easing trend, effects becoming fairly small by later afternoon.
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, lifting off summits afternoon.
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, cloud largely above the summits, only an odd cap returning, if any.
Chance of cloud free summits?
10%, rising to 80% through afternoon.
Sunshine and air clarity?
Overcast and dull with poor visibility early. Sunny glimpses breaking out, perhaps mostly sunny by later afternoon through weakened by high cloud; visibility becomes good.
How Cold? (at 750m)
11 or 12C, rising to 14C by evening and staying elevated into night. Little change with added height. Feeling like 5C in strongest early wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Friday 22nd May 2026
Last updated
Wed 20th May 26 at
3:59PM
How windy? (On the summits)
Southerly sustained 20-25mph; gusty, often approaching 30mph, stronger early with downslope gusts too.
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; some risk of cloud caps on high summits building from the west, but minimal if at all.
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)
13C rising to 15 or 16C; may stay cooler west of Brecon; rising to a warm 22C eastern valleys.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Saturday 23rd May 2026
Last updated
Wed 20th May 26 at
3:59PM
How windy? (On the summits)
Westerly 10mph and often less, trending variable.
Effect of the wind on you?
Negligible.
How Wet?
Likely dry
Chance of some early fine drizzle over high summits, this soon fading after sunrise for dry hills.
Cloud on the hills?
Early low cloud south, hills clearing
Low fog on the southern slopes, perhaps up to 600m (chance of tops above a layer of cloud, but uncertain); may be more extensive Preseli. Cloud lifts through morning, likely above summits and well broken by afternoon.
Chance of cloud free summits?
Rising to 90%
Sunshine and air clarity?
Mostly sunny, some patchy higher cloud at times. Good visibility, but may be hazy in the distance to the south.
How Cold? (at 750m)
12C with little change in height early; rising to 16C (to a warm 24C eastern valleys). Only slight drop into nighttime.
Freezing Level
Above the summits.
Planning Outlook
Pressure rises into the weekend, facilitating south-southwesterly flow; much milder temperatures arriving, likely warm in England and Wales with wind easing. Staying blustery in north Scotland, gusty too, including to lower slopes early; still feeling chilly on high Scottish tops. Patchy rain and hill cloud will continue to affect Scotland as well, most often in the west. Becoming dry and sunny England and Wales, some early low fog possible, particularly on aspects near the Irish Sea, but this dissipating soon after sunrise. Higher pressure is indicated into next week as well with hot temperatures: valleys approaching the mid-to-high 20s. Some hill cloud, mostly north and west, but most hills seeing plenty of sunshine. Only rare spots of light rain if any.