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.
Saturday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Heavy rain
Near-constant heavy rain, sometimes torrential over the mountains, very wet underfoot.
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.
Heavy rain
Near-constant heavy rain, sometimes torrential over the mountains, very wet underfoot.
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
Saturday 29th August 2026
Last updated
Fri 28th Aug 26 at
4:29PM
Summary for all mountain areas
Northerly winds bring cloud and some light rain to northern Scotland, but winds fall light for much of the Highlands - varied low cloud banks tend to rise, isolated showers possible afternoon. Rain for Wales from early morning, extending further north over England during the day, often heavy, risk thunder.
Headline for Brecon Beacons
Heavy rain, later showery; low cloud, windy at times.
How windy? (On the summits)
Varying considerably during the day - southerly at dawn, turning easterly early morning, switching west then northwesterly afternoon onward; often 20-25mph, at times reaching 35mph and gusty, intermittent lulls possible.
Effect of the wind on you?
Sometimes fairly small, but likely often breezy, for periods more blustery, may vary across the region during the day, speeds tending to peak from mid-morning for a few hours and again later in the day.
How Wet?
Heaviest sustained rain in the morning, showery bursts later.
Rain through morning, heavy falls fairly persistent over a few hours, risk of local thunder. Rain will ease briefly, though a lingering drizzle on high terrain, with broader areas of rain returning, some heavier showery bursts later afternoon into evening, may locally set in again.
Cloud on the hills?
Extensive
Cloud rarely breaking above 500m, bases regularly approaching low slopes, and to valley level on southern slopes during heaviest rain. Bases will tend to rise late in the day and break up somewhat but high summits unlikely to clear.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Mostly overcast, largely dull on high terrain with poor visibility. A few glimpses of sun may break out in afternoon on lowest slopes.
How Cold? (at 750m)
12 or 13C, little change all day. Feeling just above freezing in strongest direct wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Sunday 30th August 2026
Last updated
Fri 28th Aug 26 at
4:29PM
How windy? (On the summits)
South-southwesterly 20mph, strengthening, to often 30mph with some stronger gusts in showers.
Effect of the wind on you?
Ease of walking becomes affected, increasingly more strenuous conditions and marked wind chill.
How Wet?
Rain sets in, thundery bursts form
Drizzly rain affects high western hills in the morning. Patchy heavier rain drifts from the west, increasingly frequent and heavy bursts set in for several hours of persistent falls into afternoon, risk of hail and thunder.
Cloud on the hills?
Fairly extensive, brief improvement
Fairly extensive from dawn, to middle slopes and locally lower to the south and west. Bases lift for a time, best chance of clearer high terrain to the north, but filling back in as rain arrives, increasingly extensively.
Chance of cloud free summits?
40%, lowering to 20%
Sunshine and air clarity?
Some bursts of sunshine, best in the east with good visibility. Increasingly overcast, visibility turning poor.
How Cold? (at 750m)
11 to 13C, will vary, and trend lower before evening. Feeling like 2 or 3C in strongest wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Monday 31st August 2026
Last updated
Fri 28th Aug 26 at
4:29PM
How windy? (On the summits)
Westerly 25 to 35mph, speeds may fluctuate during day.
Effect of the wind on you?
Blustery over hills, making walking uncomfortable on exposed high terrain, feeling rather cool.
How Wet?
A few showers
A scattering of showers for a few hours morning into middle of day, brief heavier moments, then fading to be largely dry. Patchy rain returns from west into night.
Cloud on the hills?
Lowest west in morning, breaks to tops
Covering hills fairly widely with some lower banks in western areas early in day. The base tending to rise higher and clear most hills middle of day into afternoon.
Chance of cloud free summits?
30% rising to 80%
Sunshine and air clarity?
Fairly cloudy, occasional sun breaking through; high cloud later builds. Visibility often very good, some haze west.
How Cold? (at 750m)
10C, little change then slightly cooler later. Feeling near to freezing directly in the wind.
Freezing Level
Above the summits.
Planning Outlook
A generally unsettled outlook through the extended weekend and into the start of September with frequent rain and strong winds. Areas of low pressure and frontal systems move in from the Atlantic. Dropping cooler, notably chilly over Scottish mountains into Tuesday, close to freezing point on highest summits with significant wind chill in strong westerlies. A brief window of better conditions into Wednesday soon deteriorates from the west as southwesterly winds strengthen, reaching gale force over the mountains frequently in the second half of the week. Heavy rain most prolonged in the west where increasingly wet underfoot. Likely staying unsettled into next weekend and the following week.