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.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
Cool to mild
Air temperature 8 to 12C 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.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
Cool to mild
Air temperature 8 to 12C 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
Sunday 3rd August 2025
Last updated
Sun 3rd Aug 25 at
7:38AM
Summary for all mountain areas
Rain, low cloud and fog ahead of a front will clear Scotland late morning and England and Wales afternoon - but high humidity may maintain a little drizzle and low cloud Wales (most likely SW). Cloud base may not rise sufficiently to clear higher mountains mainly in W Scotland.
Headline for Brecon Beacons
Drizzly, windy and foggy; largely clearing mid to late afternoon.
How windy? (On the summits)
Westerly 30-35mph, easing to 20-25mph md to late afternoon.
Effect of the wind on you?
Strenuous walking with some buffeting on exposed tops.Notable wind chill. Conditions easing later afternoon.
How Wet?
Rain and drizzle; clearing later in day
Rain and drizzle on and off, mostly west Wales; very little in total toward Black Mountains. Becoming dry into afternoon - except possibly pockets fine drizzle remaining Cambrian range and Preseli.
Cloud on the hills?
Fog across the mountains - largely or all clearing later afternoon.
Extensive down to lower slopes, particularly west Wales. Through mid to late afternoon, most hills more or less clearing - although cloud base may rise only slowly Cambrian range and Preseli.
Chance of cloud free summits?
Less than 10%, rising to greater 80% late afternoon
Sunshine and air clarity?
Bright sunshine from mid to perhaps late afternoon - although may remain largely cloudy Cambrian range and Preseli. Very good visibility after rain clears.
How Cold? (at 750m)
14C. Feeling like 5C directly in the wind.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Monday 4th August 2025
Last updated
Sun 3rd Aug 25 at
7:38AM
How windy? (On the summits)
South turning westerly; temporarily 50 to 60mph. Easing through afternoon to reach 30mph evening.
Effect of the wind on you?
Expect difficult conditions - you could be blown over with progress very slow. Significant wind chill.
How Wet?
Rain and drizzle clearing later afternoon
Rain and drizzle becoming extensive from west through morning, heaviest western mountains. Will clear from northwest mid to late afternoon.
Cloud on the hills?
Extensive fog
Deteriorating morning in rain as fog forms across higher areas, but on lower slopes Preseli to Brecon Beacons. Temporarily very low cloud anywhere afternoon, before largely clearing. But may not completely clear higher Preseli or Cambrian range.
Chance of cloud free summits?
10%; rising to 70% late afternoon
Sunshine and air clarity?
Sunshine intermittently by late afternoon. Visibility poor during rain, improving, but hazy.
How Cold? (at 750m)
Varying between 11C and 14C, Directly in the wind, will feel close to freezing point.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Tuesday 5th August 2025
Last updated
Sun 3rd Aug 25 at
7:38AM
How windy? (On the summits)
Northwesterly 30mph; will ease slightly through the day.
Effect of the wind on you?
Will impede ease of walking across higher areas
How Wet?
Risk showers
One or two brief showers.
Cloud on the hills?
Very extensive at first: cloud base gradually rising.
After dawn, cloud base typically 550 to 750m, lowest western hills. By early afternoon, most cloud will have lifted above 800 or 900m.
Chance of cloud free summits?
20% rising to 80%
Sunshine and air clarity?
Ranging from occasional sunshine Preseli and Cambrian ranges to patchwork of sun elsewhere. Slight haze, but overall very good visibility.
How Cold? (at 750m)
7C; rising to 10 to 13C; warmest southeast Wales.
Freezing Level
Above the summits.
Planning Outlook
A mixed week: unusually stormy for August on Monday northern Britain, then intermittent rain though the week, most frequent and heaviest western mountains together with areas of low cloud and pulses of strong wind.