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
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
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.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
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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Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
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.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
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 22nd September 2026
Last updated
Mon 21st Sep 26 at
4:00PM
Summary for all mountain areas
Scotland starts windy with rain in the northwest highlands, this spreading fairly widely over the highlands into afternoon and evening. Wind eases, some bright breaks in the far northwest. Feeling damp, warm, and often cloudy England and Wales, drizzle on west hills, odd patchy rain, but sun glimpses too.
Headline for Brecon Beacons
A little drizzle and light rain, sun breaks northeast
How windy? (On the summits)
South to southwesterly 10mph, less to start, approaching 15mph over tops later.
Effect of the wind on you?
Negligible.
How Wet?
Damp air mostly west
Fine drizzle where in cloud and on some lower slopes too toward west Wales. More often dry eastern areas, though a few spotty afternoon showers may break out. Rainfall totals small.
Cloud on the hills?
Fairly extensive, lifting higher
Low cloud from many lower hill slopes upward and some fog banks into valleys too in the morning. Cloud tending to drift higher up and breaks forming gradually, best breaks towards the Black Mountains. Banks of cloud likely linger all day on south/western aspects.
Chance of cloud free summits?
20%, rising to 50% Black Mountains
Sunshine and air clarity?
Largely cloudy, misty or hazy; glimpses of sun breaking through in places, mainly eastern valleys; some improvement during the day.
How Cold? (at 750m)
12 to 14C, humid; little change into evening and night.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Wednesday 23rd September 2026
Last updated
Mon 21st Sep 26 at
4:00PM
How windy? (On the summits)
Southwesterly 15-20mph, trending northwesterly and later northerly. Sometimes gusting stronger over tops.
Effect of the wind on you?
Fairly small, but speed and direction will vary, and quite blustery over the high tops at times.
How Wet?
Drizzly and patchy rain, clearing afternoon
Some drizzle on the high tops and patchy rain around in the morning. Rain may be more frequent for a few hours, but breaking up and moving east afternoon, to become dry later.
Cloud on the hills?
Often covering high terrain, breaking afternoon
Often cloudy above 600m through morning, some variability, and more extensive for a time, with ragged patches forming to forest canopies. Through afternoon, bases lift, increasingly breaking up, just banks over tops later if any.
Chance of cloud free summits?
30%, later rising to 70%
Sunshine and air clarity?
Glimpses of sun, breaking out afternoon, for a mostly clear sunset. Very good visibility out of cloud/rain.
How Cold? (at 750m)
Steady around 12 or 13C into afternoon, then cooling to finish around 10C.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Thursday 24th September 2026
Last updated
Mon 21st Sep 26 at
4:00PM
How windy? (On the summits)
Southerly 15-25mph, will vary somewhat, and notable gusts over tops and downslope to the north.
Effect of the wind on you?
Fairly small, but nuisance gustiness over tops and towards the north.
How Wet?
No rain expected
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?
90%
Sunshine and air clarity?
Sun through high cloud, more of a patchwork in the morning. Very good visibility.
How Cold? (at 750m)
8C rising to 12C, staying elevated overnight.
Freezing Level
Above the summits.
Planning Outlook
A heavier swathe of rain moves east Wednesday morning, soon clearing Scotland but leaving a few showers behind, later clearing England and Wales. Southwesterly winds increase again on Thursday and rain later moves into western Scotland, but elsewhere is likely dry, bright in Wales and much of England. A variable outlook continues next weekend and beyond with high pressure building from the south at times with fairly warm and dry conditions, but Atlantic systems still pass to the north bringing occasional rain and showers toward western Scotland at least, strong wind here with sustained gales in the north. Next week remains on the unsettled side: west-southwesterly wind with bands of rain passing over most mountains, but a trend towards higher pressure brings longer settled windows into October.