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
Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
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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Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
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
Thursday 24th September 2026
Last updated
Wed 23rd Sep 26 at
4:27PM
Summary for all mountain areas
Southerly gales develop widely over Scottish mountains, becoming severe northwest coastal tops. A little rain moves northeast, then more persistent rain sets in for western mountains, turning heavier. Wind strengthens too for England & Wales, generally dry and hills clear, sun giving way to a veil of upper cloud.
Headline for Brecon Beacons
Increasingly breezy; dry, mostly clear, local mist/cloud patches.
How windy? (On the summits)
Southerly 15-25mph, will vary somewhat, tending to rise, and notable gusts over tops and downslope north of high tops.
Effect of the wind on you?
Fairly small, but nuisance gustiness over tops and towards the north.
How Wet?
No rain expected
Rare if any spots from thickening cloud over western hills.
Cloud on the hills?
Little or none
Mist in some sheltered valleys around dawn, this soon lifting, dissipating for clear hills.
Chance of cloud free summits?
Above 90%
Sunshine and air clarity?
Sun through high cloud. Very good visibility.
How Cold? (at 750m)
8C rising to 12C, staying elevated overnight.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Friday 25th September 2026
Last updated
Wed 23rd Sep 26 at
4:27PM
How windy? (On the summits)
Westerly or variable 10-15mph or less, but at dawn 20mph and rising a little again toward evening.
Effect of the wind on you?
Mostly small.
How Wet?
A little rain west
Much of south and east of the region likely stays largely dry. Patchy rain develops over western hills during morning, amounts fairly small, may fizzle out.
Cloud on the hills?
Early low-level cloud lifts
Varied cloud or fog banks from lower elevations in the morning, some high tops may start above cloud; tending to disperse or lift onto higher slopes, but many hills may well clear. Some cloud banks drift onto western hills in rain.
Chance of cloud free summits?
50%
Sunshine and air clarity?
Some sun through high cloud, best southeast, perhaps a sunny start on summits if above an inversion. Early mist, then visibility good, reducing in west where rain develops.
How Cold? (at 750m)
Around 12C, little change all day.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Saturday 26th September 2026
Last updated
Wed 23rd Sep 26 at
4:27PM
How windy? (On the summits)
West turning southwesterly 10 to 20mph, typically strongest west Wales.
Effect of the wind on you?
Fairly small.
How Wet?
Little or no rain
Substantially dry, an odd brief light shower mainly west Wales.
Cloud on the hills?
Little if any
Patchy mist some valleys at first, some brief fragments may drift upslope, but soon all cloud above hills.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Sunshine and well broken cloud. Visibility very good, slight haze toward west coast.
How Cold? (at 750m)
8C rising to 11C afternoon.
Freezing Level
Above the summits.
Planning Outlook
South to southwesterly winds prevail onward into the weekend and next week. Some rain drifting in from the Atlantic, a mix of drizzle, some showery falls, and locally steadier rain at times over western mountains. Cloud often shrouding hills, best of breaks toward east and north. Generally mild air, but prepare for marked chill factor on tops due to often strong winds, gales for periods over high terrain, most sustained in Scotland. Into mid-next week, risk of a more widespread gale, or severe gale over higher mountains. Higher pressure then tends to expand further over the country into the start of October for drier and quite warm weather.