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.
Today'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.
Chilly
Air temperature near or just above freezing on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate 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.
Chilly
Air temperature near or just above freezing on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate layers.
Viewing Forecast For
Brecon Beacons
Saturday 29th March 2025
Last updated
Sat 29th Mar 25 at
7:02AM
Summary for all mountain areas
Deteriorating rapidly as a front, particularly active in western Scotland, brings precipitation and upland gales - or on Scottish highlands storm force winds. Heavy snow for a few hours mainly western Scotland, mostly rain elsewhere. Total rainfall small south toward S Pennines and Wales.
Headline for Brecon Beacons
Deteriorating afternoon: becoming windy; rain and lowering cloud.
How windy? (On the summits)
Westerly 10 to 15mph, strengthening 20 or in west Wales 30mph by mid or late afternoon.
Effect of the wind on you?
Small before in afternoon walking increasingly impeded by the wind.
How Wet?
Pockets or rain later afternoon onwards
Substantially or completely dry, but risk of a little drizzly rain, most likely west Wales, toward or during evening.
Cloud on the hills?
Probably extensive on highest tops
Cloud base typically 650 to 900m by late morning. Will lower onto higher slopes particularly southwest and west Wales late in day.
Chance of cloud free summits?
80% later 20%
Sunshine and air clarity?
Patchwork of sunshine - though may turn cloudy from west through afternoon. Very good or excellent visibility.
How Cold? (at 750m)
0 rising to 4C. Will feel as cold as minus 8C directly in the wind.
Freezing Level
800m at first; above the summits by midday.
Viewing Forecast For
Brecon Beacons
Sunday 30th March 2025
Last updated
Sat 29th Mar 25 at
7:02AM
How windy? (On the summits)
Northwest backing westerly, slowly easing from 30 to 40mph on highest tops post dawn to 20 to 30mph evening.
Effect of the wind on you?
Considerable buffeting and wind chill higher up, mainly morning.
How Wet?
Rain very unlikely
Small risk of a little drizzle near the west coast by dusk.
Cloud on the hills?
Confined to higher tops: may clear nearly all summits afternoon
By late morning cloud base typically 650 to 800m. Cloud base should then lift to 900m or above. Toward or during evening, mainly near the coast southwest Wales, cloud will probably begin to form on lower slopes.
Chance of cloud free summits?
90% afternoon
Sunshine and air clarity?
Patchwork of sunshine; most cloud morning Cambrian range. Slight haze.
How Cold? (at 750m)
7C Rising slowly through the day. Will feel well below freezing point directly in the wind.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Monday 31st March 2025
Last updated
Sat 29th Mar 25 at
7:02AM
How windy? (On the summits)
Mostly west or southwesterly (although direction may vary) 10mph or less.
Effect of the wind on you?
Negligible
How Wet?
Rain very unlikely
Chance pockets of fine drizzle SW Wales.
Cloud on the hills?
Most summits gradually clearing, possibly persisting SW Wales
Most mountains free of cloud by late morning or midday as areas of low cloud gradually break up. Confidence low SW Wales, where very low cloud over the sea may envelop even lower slopes of the Preseli.
Chance of cloud free summits?
80%
Sunshine and air clarity?
Sunshine becoming extensive, perhaps by mid morning. But threat toward Preseli of dull and misty; otherwise very good or excellent visibility.
How Cold? (at 750m)
8C
Freezing Level
Above the summits.
Planning Outlook
Pressure will rise across the UK early next week, bringing extensively dry and for a few days very warm weather - albeit on Monday the remnants of fronts will bring a little rain but extensive low cloud to some western mountains. Later next week, some forecasts suggest a marked drop in temperature levels as the high pressure shifts position to the north of Scotland.