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.
Friday'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.
Cool to mild
Air temperature 5 to 10C 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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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.
Cool to mild
Air temperature 5 to 10C 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
Friday 17th October 2025
Last updated
Thu 16th Oct 25 at
4:25PM
Summary for all mountain areas
Varied areas of low cloud / fog in morning, some highest tops just poking above an inversion, mainly southwest-central Highlands, possibly Snowdon group and Lakeland high tops. Cloud tending to rise, some breaks locally. A thicker cloud layer north-east Highlands, local drizzle. SE'ly breeze starting to increase.
Headline for Brecon Beacons
Patchy low cloud / early fog banks, some sun. Light wind til late.
How windy? (On the summits)
Southeasterly 10-15mph, at times 20mph, particularly more southern areas. Tending to increase slightly, into night reaching 25mph, local stronger gusts developing.
Effect of the wind on you?
Fairly small, feeling breezier in places, more notable later in day onward.
How Wet?
No rain expected
Cloud on the hills?
Mostly high terrain, well-broken afternoon
Banks of cloud on mid and upper slopes with patches lower down at dawn, some local valley mist possible. Cloud lifts to high terrain, breaks for clear hills are likely into afternoon, particularly west.
Chance of cloud free summits?
30% rising to 70%
Sunshine and air clarity?
Intermittent sunshine, most in afternoon, some wispy cloud high in sky. Good visibility though some haze especially morning.
How Cold? (at 750m)
7C, feeling nearer freezing where breeze increases.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Saturday 18th October 2025
Last updated
Thu 16th Oct 25 at
4:25PM
How windy? (On the summits)
Southeasterly, tending to increase 25 to 35mph, later in day 40mph higher tops, very gusty in places.
Effect of the wind on you?
Becoming more blustery, starting to affect comfortable walking and balance on exposed tops and ridges.
How Wet?
Little or no rain until late
Some drizzle where in cloud on south-facing hills. Some patchy rain may encroach from west later in day, then more persistent into the night.
Cloud on the hills?
May persist south
Variable cloud banks on the hills in the morning, mostly southern areas, where low banks may persist on some slopes, mostly above 600-700m. Lifting toward or above many tops in mid Wales.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Mostly little if any sun. An increasing veil of high cloud. Rather hazy.
How Cold? (at 750m)
7C, but feeling below freezing in the wind.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Sunday 19th October 2025
Last updated
Thu 16th Oct 25 at
4:25PM
How windy? (On the summits)
South to southeasterly, 35 to 50mph, speed may vary during day, gusty for periods around high tops.
Effect of the wind on you?
Expect challenging conditions over the mountains, frequent buffeting gusts affecting balance. Marked wind chill.
How Wet?
Persistent rain, sustained heavy falls
Risk of rain much of the day, in the morning may be patchier and lighter, less toward eastern mid-Wales. Several hours of continuous heavy rain setting in from the southwest. May ease from west later.
Cloud on the hills?
Extensive, lowest south
Shrouding the mountains likely all day, to many mid-slopes upward, or lower slopes on south-facing areas.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Sun unlikely, overcast, murky in rain. May start slightly better in east.
How Cold? (at 750m)
9C, small change with height on hills. Feeling like -3 to -5C directly in the wind.
Freezing Level
Above the summits
Planning Outlook
Southeasterly winds increase into the weekend, becoming gale force on many hills into Sunday. A dry day on Saturday with variable cloud - some highest tops may start near or above the cloud mainly in Scotland, but the inversion largely gone by this time as cloud rises higher - best breaks during the day toward the northwest of major hill groups. Fronts moving in from the Atlantic by Sunday bring rain, which is likely to become heavy, especially Wales, then northern England, but uncertainty how fast this spreads into Scotland. A more unsettled outlook into next week with areas of rain and showers, which will vary locally day-to-day. Likely colder later in the week, may drop to freezing on highest mountains.