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
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.
Hazy, some fog banks
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Hazy views with lack of air clarity, particularly on lower terrain, some fog banks on hills making navigation locally more difficult. If above an inversion, the air outstandingly clear.
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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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.
Hazy, some fog banks
Hazy views with lack of air clarity, particularly on lower terrain, some fog banks on hills making navigation locally more difficult. If above an inversion, the air outstandingly clear.
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 13th October 2025
Last updated
Sun 12th Oct 25 at
4:00PM
Summary for all mountain areas
Inversion conditions widely across Scottish highlands. High tops of Lakeland and Snowdonia also likely above a cloud layer. Feeling quite warm in the autumn sunshine on summits above the cloud; valleys and glens starting cooler. Cloudier over Pennines and east Wales, most fog rising to high terrain with local breaks.
Headline for Brecon Beacons
Varied cloud lifts to high terrain; quite hazy
How windy? (On the summits)
East or southeasterly 15-20mph, notable gusts over high ground.
Effect of the wind on you?
Mostly small, though gusts in exposure will affect comfort of walking.
How Wet?
No rain expected
Cloud on the hills?
Fairly extensive, rising to upper slopes
Cloud banks at various heights in the morning, possibly more sheet-like, particularly east. Bases tending to lift to or above 600m; east of Brecon may often be cloudy above this level, much more broken to the west with clearer summits. Very highest summits at dawn may just be above fog, but soon enveloped as the fog rises.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Mostly cloudy and dull, a few brighter spells possible in the west. Visibility limited by fog and haze.
How Cold? (at 750m)
10C, little change with height in the morning through valleys starting much cooler.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Tuesday 14th October 2025
Last updated
Sun 12th Oct 25 at
4:00PM
How windy? (On the summits)
Easterly 15mph, in palces gusty 20-25mph around some higher slopes.
Effect of the wind on you?
Fairly small, but some slopes feeling noticeably gusty.
How Wet?
No rain expected
Cloud on the hills?
Varied low cloud, may persist east
Cloud banks may fairly extensively cover eastern hills, some highest tops starting near top of the cloud layer, but likely to spill up and over higher slopes. May thin a little, and cloud more broken overall in west.
Chance of cloud free summits?
50%
Sunshine and air clarity?
Sunshine generally best in west Wales, visibility very good here. Hazy or misty some slopes elsewhere.
How Cold? (at 750m)
8 or 9C, small variation from lower slopes upward in morning.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Wednesday 15th October 2025
Last updated
Sun 12th Oct 25 at
4:00PM
How windy? (On the summits)
Northeasterly 15-20mph. Gusty, reaching 25mph over tops and elevated passes.
Effect of the wind on you?
Comfort of walking just becoming affected during gusts.
How Wet?
No rain expected
Cloud on the hills?
Patchy cloud largely lifts off summits
From dawn, well broken cloud at various heights, perhaps more extensive east of Brecon at first. Bases lift to or above the high tops, though always a risk of patches grazing the tops, particularly east.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Increasingly sunny as cloud increasingly breaks. Very clear air on the high tops at first, a haze increasingly prevalent.
How Cold? (at 750m)
7 or 8C. Cooler in the valleys at dawn.
Freezing Level
Above the summits
Planning Outlook
High pressure resides over the country through the week, maintaining quiet weather. In the mornings, varied low cloud and morning fog is likely while inversion conditions likely to remain over highest mountains for several days. A haze will linger on low slopes below the inversion. During midweek the inversion starts to weaken as pressure begins to fall gradually; cloud will be well-broken for many and begin to lift to higher terrain. Light winds overall, an easterly breeze likely for Wales. Uncertainty about the weather pattern development toward next weekend: some indication of strengthening winds bringing some rain, but may not reach all areas. Later October has hints of chillier northerly air, especially in Scotland.