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.
Tuesday'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.
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.
Hazy, some fog banks
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Distant views reduced by haze, locally foggy for a time in valleys and some hill slopes.
Warm
Comfortable temperatures on the hills, 10 to 15C on tops, feeling pleasantly warm especially on lower ground. Beware of feeling cooler if exposed to wind on higher terrain.
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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.
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.
Hazy, some fog banks
Distant views reduced by haze, locally foggy for a time in valleys and some hill slopes.
Warm
Comfortable temperatures on the hills, 10 to 15C on tops, feeling pleasantly warm especially on lower ground. Beware of feeling cooler if exposed to wind on higher terrain.
Viewing Forecast For
Brecon Beacons
Tuesday 29th September 2026
Last updated
Mon 28th Sep 26 at
4:30PM
Summary for all mountain areas
A windy start strengthens to widespread gales, powerful gusts not just on high terrain. Feeling chilly despite mild-to-warm temperatures, increasingly humid too. Some patchy rain and cloud moves north through Wales into England and later Scotland; northwest Scotland bright and dry well into the day.
Headline for Brecon Beacons
Very windy, gales later; murky, patchy rain, cloud thinning
How windy? (On the summits)
Southeasterly 30-35mph to start, but notable gusts downslope to the northwest. Strengthening, sustained 45mph over tops, strongest gusts towards 60mph and further strengthening overnight.
Effect of the wind on you?
Strenuous walking conditions from the start will deteriorate to widely challenging conditions, chaotic buffeting gusts make balance difficult, not just on high terrain. Notable wind chill.
How Wet?
Patchy rain and drizzle
Patchy rain drifts from the south now and again, most notable falls in eastern areas, and often drizzly on the high tops as well in cloud. Some chance a drier window through afternoon, then rain sets in from the west evening into night.
Cloud on the hills?
Covering many hills, varied clear windows break out
Fairly extensive cloud over the hills, from some lower elevations upward in the morning on south-facing slopes. Will thin and break a little, best of breaks forming toward western Cambrians, but also north aspects of Brecon Beacons.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Some glimpses of weak sun through high cloud mostly west coastal areas, perhaps more broadly later afternoon. Hazy, murky southern areas, some local improvement possible as the day goes.
How Cold? (at 750m)
13C rising to 15 or 16C, feeling humid; then only slight drop onward into night. Feeling like 4 to 6C in direct wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Wednesday 30th September 2026
Last updated
Mon 28th Sep 26 at
4:30PM
How windy? (On the summits)
Southerly 25 to 40mph, at times 50mph at least in gusts on higher tops; lessening trend later.
Effect of the wind on you?
Strenuous walking conditions, frequent buffeting in exposure on high terrain, gusts knocking you off balance.
How Wet?
Frequent bursts of rain
A band of heavy rain from dawn soon clears northeastward, but clusters of heavy showers follow, merging to frequent rain with risk of thunder.
Cloud on the hills?
Varying over higher tops
Cloud base lifting early morning with some breaks to upper slopes, but will likely come and go over higher slopes all day, best of breaks typically toward eastern mid-Wales.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Intermittent sun breaking through mostly east and mid-Wales. Visibility varying, at times very good, but hazier coasts and reducing in rain.
How Cold? (at 750m)
Humid 14C or above from dawn, dropping during the day to a fresher 10C. Feeling near to freezing in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Thursday 1st October 2026
Last updated
Mon 28th Sep 26 at
4:30PM
How windy? (On the summits)
Southwesterly 15-25mph, some gustiness to start. Trending stronger later, strengthening overnight.
Effect of the wind on you?
Fairly small, some nuisance gusts before showers with a chilly feeling. Deteriorating somewhat overnight.
How Wet?
Showers gradually easing
Showers stream in from the southwest, rather frequent with some heavy bursts in the morning. Showers will gradually scatter and become lighter, best chance dry conditions towards Black Mountains later in the day.
Cloud on the hills?
Lifting to tops and increasingly breaking
Starting fairly extensive above 700m, banks as low as 500m on southwestern aspects. Bases will vary in an out of showers, but a lifting trend, north slopes soon clear, and increasingly just patches on western tops as the day goes.
Chance of cloud free summits?
Rising to 70%
Sunshine and air clarity?
Patchy sunshine, extended sunny spells breaking out north and east. Good visibility, a little haze building.
How Cold? (at 750m)
8 or 9C, rising a degree Black Mountains.
Freezing Level
Above the summits.
Planning Outlook
A band of rain moves northeast through early Wednesday, leaving fresher and blustery south-southwesterlies into Wednesday and Thursday, showery in the west but often bright between showers, particularly eastern areas. Friday will be a wetter day again, the rain quite frequent with extensive cloud over western hill groups and quite windy in England and Scotland. On Saturday, higher pressure tends to expand from the south, bringing more settled weather to England and Wales; temperatures generally mild, some cool nights when skies are clear. Scotland will stay cloudier and windier, particularly in northern areas early next week, some drizzle in the northwest and occasionally broader bands of rain slipping eastward.