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.
Thursday'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.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
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.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
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
Thursday 20th August 2026
Last updated
Wed 19th Aug 26 at
4:30PM
Summary for all mountain areas
Showers and low cloud push into north Scotland all day, feeling chilly in the wind. Showers more scattered over southern Munros. Showers affect south Scotland, England, and Wales all day, with a notable cluster of frequent heavy rain drifting south through England into the Peak District around midday, showers follow behind.
Headline for Brecon Beacons
Frequent showers well into the day
How windy? (On the summits)
Westerly turning northerly, speed likely varying 10 to 25mph, trending towards higher speed with time.
Effect of the wind on you?
Fairly small for periods, but feeling noticeably cool if exposed to fresher breeze on tops as the day goes.
How Wet?
Frequent showers, some heavy
Frequent showers drifting from the west well into the day, heavy bursts common and showers occasionally clustering into broader areas of rain. Only late in the day will showers tend to become scattered.
Cloud on the hills?
Capping tops, a few breaks, and variably lower
Varied cloud banks above 700-800m, likely to come and go on tops, some lower patches around rain and in the west, and may become more extensive for several hours later in the day.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Glimpses of sun, periods of more extensive high cloud. Varied visibility, very good but turning poor in cloud and rain.
How Cold? (at 750m)
9 to 11C. Feeling like 2 to 5C in stronger wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Friday 21st August 2026
Last updated
Wed 19th Aug 26 at
4:30PM
How windy? (On the summits)
Northerly but variable, around 10mph and often less. Gusts form around afternoon showers.
Effect of the wind on you?
Negligible.
How Wet?
Most rain west, some showers
Western hills often under rain, particularly the Cambrians and Preseli hills. Drier windows towards the east, but some areas of rain will drift here at times, with a risk of showers for several afternoon hours.
Cloud on the hills?
Patches over tops, mostly west
Patchy cloud often affecting high western terrain, a few breaks here and there between bursts of rain. Further east, some varied patchy cloud at varied heights in the morning, but substantially lifting to clear off the hills, patches over high tops where showers occur later.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Glimpses of sun. Good visibility.
How Cold? (at 750m)
8 to 10C, locally reaching 11C south and eastern hills.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Saturday 22nd August 2026
Last updated
Wed 19th Aug 26 at
4:30PM
How windy? (On the summits)
Northerly 5-15mph.
Effect of the wind on you?
Small.
How Wet?
Patchy light rain
A little rain affects the hills on-and-off much of the day, dry windows likely and any notable falls highly localised and fleeting.
Cloud on the hills?
Little expected
Patchy cloud here and there in the morning at varied height, the most cloud over the coastal Cambrians which may extensively shroud the tops early in the day. Lifting and breaking as morning goes to clear the summits.
Chance of cloud free summits?
80%
Sunshine and air clarity?
Patchwork of cloud and sun. Excellent visibility.
How Cold? (at 750m)
8C rising to 11C, or warmer on hills near Brynmawr.
Freezing Level
Above the summits.
Planning Outlook
As the weekend approaches, wind shifts northerly, moving showers southward. Generally lighter wind but gusts will be common around showers. Temperature lowers too, dropping close to freezing on high Scottish tops on Friday morning (chance of sleet/snow here) and frost may occur in Highland glens over a couple of nights. Heavy showers in England and Wales on Friday, then more often dry with few lighter showers through the weekend as higher pressure builds into the southwest. Conditions remain on the drier, brighter side into early next week. Wind shifts southwesterly and pressure drops again as the week goes, bringing periods of cloud and rain for most hill groups, and perhaps some stronger wind at times. Detail is uncertain, but some windows of better weather are possible, notably in north and eastern areas.