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.
Sunday's Forecast
Gale force, walking arduous
Considerable buffeting, walking into the wind will be strenuous on exposed terrain, stronger gusts may knock you off your feet. 40 to 55mph.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
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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Gale force, walking arduous
Considerable buffeting, walking into the wind will be strenuous on exposed terrain, stronger gusts may knock you off your feet. 40 to 55mph.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
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 31st August 2025
Last updated
Sat 30th Aug 25 at
4:26PM
Summary for all mountain areas
Low pressure southwest of the Hebrides, brings strong to gale force southerly winds; marked chill. Showery rain frequent on western hills from west Highlands to Snowdonia, with showers increasingly developing elsewhere. Hill fog varied, but extensive west/southern Highlands. Highest cloud bases in northern Scotland.
Headline for Brecon Beacons
Strong winds, marked chill. Showery rain, extending inland. Some heavy.
How windy? (On the summits)
South to southwesterly 35 to 45mph, at times over 50mph at least in gusts over higher tops.
Effect of the wind on you?
Arduous walking conditions across the hills, in places more difficult where exposed. Marked wind chill.
How Wet?
Scattered heavy showers
Bursts of rain throughout the day, most frequent toward west/southwest early morning, but increasingly widespread. Risk of isolated thunder.
Cloud on the hills?
Mostly higher tops or above
Cloud base varying, mostly confined above 600-700m, sometimes lower patches in rain. Lifting above higher tops for periods, most often in east.
Chance of cloud free summits?
40% in west, 70% in east
Sunshine and air clarity?
Brief glimpses of sun. Visibility good away from showers, but general haze.
How Cold? (at 750m)
10 or 11C, little change all day. Wind chill feeling below freezing in exposure on tops.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Monday 1st September 2025
Last updated
Sat 30th Aug 25 at
4:26PM
How windy? (On the summits)
South soon southwesterly, 25 to 40mph.
Effect of the wind on you?
Frequent buffeting, strenuous walking over exposed high terrain, affecting balance on ridges. Considerable wind chill.
How Wet?
Heavy showers, hail and thunder
Showery rain throughout the day, merging into clusters of more constant rain at times. Heavy bursts with hail, risk of lightning.
Cloud on the hills?
Varied over tops
Often covering higher slopes above 600-800m, most persistent west and southwest of Brecon. Some breaks toward higher tops, best and most often east Wales.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Brief glimpses of sun mostly east. Visibility intermittently good; but general haze, poor in rain.
How Cold? (at 750m)
9 to 11C. Feeling near to freezing directly in the wind on higher terrain.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Tuesday 2nd September 2025
Last updated
Sat 30th Aug 25 at
4:26PM
How windy? (On the summits)
Southeasterly 10 to 15mph, tending to increasingly vary in direction as shallow low pressure area moves in.
Effect of the wind on you?
Mostly small
How Wet?
Increasingly rain moving up from the south.
May start with just a few showers, but a increasingly risk of persistent spells of rain moving in from the south.
Cloud on the hills?
Will become extensive in rain
Will likely increasingly envelop hills from mid to upper slopes as rain becomes more widespread during the day.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Overcast. Visibility becoming poor in rain.
How Cold? (at 750m)
10C
Freezing Level
Above the summits
Planning Outlook
Low pressure continues to dominate early in the new week, maintaining unsettled conditions widely. Areas of rain and heavy showers, risk of hail and thunder. Windy, gales over mountains early in the week, tending to ease for periods at least in the Highlands mid-late week, whilst southwesterlies often remain strong over England and Wales. Some improvement possible toward next weekend, though the extended outlook into the second week of September remains changeable. Mid-September shows signs of a better improvement as pressure tends to rise more widely.