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.
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 typically 0 to 5C 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 typically 0 to 5C on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate layers.
Viewing Forecast For
Brecon Beacons
Monday 16th March 2026
Last updated
Sun 15th Mar 26 at
4:21PM
Summary for all mountain areas
Snow and hail showers affect most areas in the morning, frequent over western hills. A brief easing, then several hours of rain arrives to Wales, moving north and east into England and Scotland through afternoon and into evening. A notable rise in temperature with arrival of rain. Strong wind all day, a slight easing for a few hours.
Headline for Brecon Beacons
Patchy rain/drizzle; blustery, strengthening afternoon
How windy? (On the summits)
Westerly 30-35mph, shifting southwesterly with time, strengthening through afternoon, 40-45mph into evening.
Effect of the wind on you?
Walking strenuous in exposure most of the day with considerable wind chill. Conditions deteriorating through afternoon, balance increasingly challenged in buffeting gusts.
How Wet?
Patchy rain and drizzle
A few isolated showers after dawn, then several hours of patchy rain from late morning into afternoon, tending to clear into evening. Total rainfall small particularly east Wales, north from Black Mountains.
Cloud on the hills?
Blanket of fog most or all day
High terrain likely in fog from dawn, a few odd summit clearances in the east at first. Bases lower to middle slopes in showers, then from midday into afternoon, cloud fills in over high terrain, lowering towards 300-400m through afternoon.
Chance of cloud free summits?
40% early, lowering to almost nil through afternoon
Sunshine and air clarity?
Becoming dull and misty from west - very good visibility early in the day on lower slopes below cloud before conditions deteriorate.
How Cold? (at 750m)
1C, steadily rising, reaching 5C by evening. Will feel as cold as minus 12C due to wind chill.
Freezing Level
Starting around 800m or above, lifting above the summits.
Viewing Forecast For
Brecon Beacons
Tuesday 17th March 2026
Last updated
Sun 15th Mar 26 at
4:21PM
How windy? (On the summits)
Southerly 25 to 35mph, strongest Cambrian range; more widely 35mph early in the day.
Effect of the wind on you?
Walking strenuous in the morning, an easing trend with time, though staying very blustery in the west.
How Wet?
Risk drizzle, mainly or only SW Wales
Frequently or completely dry, but risk drizzle Preseli, possibly western Brecon Beacons.
Cloud on the hills?
Blanket of fog probably clearing most areas, lingering far west
Preseli to western Brecon Beacons: Persistent fog, cloud base 300m, perhaps lower, to 550m; may break or become confined to Preseli. Elsewhere: Cloud covering the hills widely from dawn, but may well mostly or completely break up later morning or middle of day.
Chance of cloud free summits?
Rising to 70% by afternoon
Sunshine and air clarity?
Threat dull and murky most or all day SW Wales. Otherwise, pockets of sun, becoming widespread; visibility very good although a haze.
How Cold? (at 750m)
5 or 6C. Feeling like -5C in the wind.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Wednesday 18th March 2026
Last updated
Sun 15th Mar 26 at
4:21PM
How windy? (On the summits)
South-southeasterly 10-20mph, some gustiness, including to lower slopes.
Effect of the wind on you?
Mostly small
How Wet?
No precipitation expected
Cloud on the hills?
Little expected
Some patchy fog on sheltered low slopes and valleys in the morning, lifting soon after sunrise and dissipating for clear hills.
Chance of cloud free summits?
Sunshine and air clarity?
Mostly sunny. Very good visibility.
How Cold? (at 750m)
7C from dawn (to 3C in valleys), lifting to 12C, staying elevated into night on upper slopes.
Freezing Level
Above the summits.
Planning Outlook
Areas of low cloud, drizzly rain and strong winds will continue to affect mainly western mountains until Wednesday, the rain at times heavy in western Scotland. Pressure begins to quickly rise on Wednesday, providing fairly widely settled conditions across the country. Some cloud and spotty light rain lingers in north England/south Scotland for a few days, elsewhere becoming mostly sunny. England, Wales, and southwest Scotland seeing milder temperatures, mostly light wind but the occasional stronger breeze. Elsewhere in Scotland stays cooler, some overnight frosts possible under clear-sky nights. Over the weekend, first indications of a cool easterly wind building across all areas, perhaps some periods of rain south, but further detail currently uncertain.