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.
Thunderstorms
Bursts of rain, torrential downpours with hail, risk of thunder and lightning. Seek shelter where possible.
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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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.
Thunderstorms
Bursts of rain, torrential downpours with hail, risk of thunder and lightning. Seek shelter where possible.
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
Friday 28th August 2026
Last updated
Thu 27th Aug 26 at
4:26PM
Summary for all mountain areas
Frequent rain for England and Wales well into the day, clustering into heavy falls and local thunderstorms; poor visibility on many tops and some fast flowing streams. Easing to lighter showers later. Rain and drizzle over north and notably east Scotland, best of clear hills west highlands. Widely warm and humid.
Headline for Brecon Beacons
Heavy thundery showers and extensive cloud; warm and humid
How windy? (On the summits)
A varied westerly, generally 15-25mph, some notable gusts approaching 30-35mph early and late in the day; will ease briefly, speeds to 10mph.
Effect of the wind on you?
Fairly small, though some notable gustiness early and late in the day.
How Wet?
Heavy, thundery rain and showers
From dawn, frequent showers across most hills, clustering together for extended heavy falls with a risk of thunder. With time, showers will begin to scatter, but the risk of heavy falls remains high until later, but staying drizzly with patchy rain until night.
Cloud on the hills?
Extensive
Blanket cloud shrouds the hills from middle slopes up well into the day, and often to lower slopes, and into southern valleys during heavier moments of rain. Only beginning to lift and break up later.
Chance of cloud free summits?
20%
Sunshine and air clarity?
A few glimpses of sun breaking out later, otherwise overcast, often dull with poor visibility.
How Cold? (at 750m)
12 to 14C, rising to 15C on eastern hills; humid.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Saturday 29th August 2026
Last updated
Thu 27th Aug 26 at
4:26PM
How windy? (On the summits)
Generally southwesterly, some variability, 25-40mph, and may strengthen further for a time with strong gusts.
Effect of the wind on you?
Strenuous walking in exposure much of the day, walking more arduous during strongest wind with notable wind chill.
How Wet?
Rain most of the day
Rain through morning, heavy falls come and go, risk of local thunder. Rain will ease briefly, though a lingering drizzle on high terrain, with broader areas of rain returning; heaviest rain likely in the morning.
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 unlike 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 late in the day on lowest slopes.
How Cold? (at 750m)
12 or 13C, may rise a degree. Feeling just above freezing in strongest direct wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Sunday 30th August 2026
Last updated
Thu 27th Aug 26 at
4:26PM
How windy? (On the summits)
Southwesterly 15-20mph, strengthening, top speeds to 35-40mph later but will continue to vary.
Effect of the wind on you?
Ease of walking becomes affected, and later more strenuous conditions for a time with notable wind chill.
How Wet?
Rain gradually sets in, rumbles of thunder
Drizzly rain affects high western hills from the morning. Patchy rain drifts from the west, increasingly frequent and heavy and will set in for several hours of persistent falls, risk of thunder for a time.
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 just above freezing in strongest wind.
Freezing Level
Above the summits.
Planning Outlook
A generally damp weekend ahead, particularly in England and Wales: several bands of rain will pass west-to-east, cloud often shrouding hills, particularly west where only slightly improving away from the main areas of rain. Some stronger wind will affect Wales at times, notably south. Less rain over Scotland, though a little drizzly rain here and there will become local showery bursts through afternoon; variable cloud, tending to lift during the day but returning where rain forms. Also minimal wind in Scotland, mild temperatures. Westerly flow is expected next week, drawing cloud and showers into western areas, particularly in Scotland, with periods of strong wind and broader areas of rain more widely across the country. Best of bright breaks to the east.