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.
Monday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
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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Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
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
Monday 5th October 2026
Last updated
Sun 4th Oct 26 at
3:52PM
Summary for all mountain areas
Humid air ahead of a cold front moving slowly south across Scotland will bring fog and drizzle to most mountain areas, although some improvement from the north across the Scottish Highlands. Upland gales will be widespread - least windy southwards along the Pennines and also Wales.
Headline for Brecon Beacons
Gales higher areas. Dull; extensive fog. Patches drizzle.
How windy? (On the summits)
Southwesterly increasingly markedly with height to 30, perhaps 35 or 40mph. highest tops Generally a slow easing through the day.
Effect of the wind on you?
Expect considerable wind chill and walking to be strenuous. Balance difficult at times higher up.
How Wet?
Drizzle occasionally west Wales.
Risk drizzle occasionally Cambrian range and SW Wales. Elsewhere isolated if any drizzle.
Cloud on the hills?
Fog most or all higher areas; very low cloud base west/southwest Wales
Very low cloud will drift in off the sea to Cambrian and SW Wales (southern areas west of Brecon). Elsewhere, patches low cloud probably breaking at times by midday or early afternoon, perhaps widely so north from Black Mountains.
Chance of cloud free summits?
30%
Sunshine and air clarity?
There may be patches off sun and goodt visibility east Wales. Westward increasingly cloudy or dull and misty.
How Cold? (at 750m)
13C.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Tuesday 6th October 2026
Last updated
Sun 4th Oct 26 at
3:52PM
How windy? (On the summits)
Westerly 15 to perhaps 20mph.
Effect of the wind on you?
Small.
How Wet?
Rain occasionally, mainly west Wales
Patches drizzly rain, mostly west Wales. Total rainfall small, and little if any reaching Black Mountains.
Cloud on the hills?
Blanket of fog on most hills
Fog across most hills above 300 to 450m up. East of Cambrian range and north of A40 (through Brecon), most cloud above 500 to perhaps 700m.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Widely cloudy and in rain misty. Otherwise very good visibility.
How Cold? (at 750m)
12C.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Wednesday 7th October 2026
Last updated
Sun 4th Oct 26 at
3:52PM
How windy? (On the summits)
Northwesterly 25-30mph, but perhaps later in day 40mph.
Effect of the wind on you?
Will impact ease of walking and balance difficult at times. Later, conditions may become difficult, particularly near showers. Considerable wind chill.
How Wet?
Rain clearing to a few showers
Confidence low: Overnight rain will clear, possibly only slowly through morning from east Wales. Later risk of a few showers, possible hail.
Cloud on the hills?
Intermittently covering higher areas
Cloud likely to shroud the mountains widely in rain, but as it clears so cloud will clear most or all summits, but will drop to 400 to 600m near showers.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Patches of sun will extend east. Visibility poor in rain, but otherwise good.
How Cold? (at 750m)
7C; will feel as cold as minus 4C directly in winds.
Freezing Level
Above the summits.
Planning Outlook
A brief colder period with the wind easing on Wednesday and Thursday - some snow will lie on higher Scottish summits. Winds then return to the southwest, bringing bands of rain, low cloud and strong upland winds across Britain. Most frequent severe weather will be on the W and NW Highlands, where there will be considerable rain and frequent upland gales.