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
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.
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.
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
Saturday 5th September 2026
Last updated
Fri 4th Sep 26 at
4:17PM
Summary for all mountain areas
Brisk and chilly westerly winds in the morning, starting gale-force on high tops in Scotland, but lowering speeds. A little light rain, brief showers mainly western Scotland with varied cloud on tops. Often dry with cloud breaks to tops for eastern Highlands, England and Wales, some sun and hazy high cloud.
Headline for Brecon Beacons
Fairly light wind, generally dry, most hills soon clear.
How windy? (On the summits)
Westerly 25mph at dawn, soon easing in morning to 15mph or less, turning southwesterly; tending to rise again later in day to 20-25mph, occasional stronger gusts evening into night.
Effect of the wind on you?
Feeling cool in early breeze, but soon mostly small. Becoming blustery again later in day.
How Wet?
Largely dry
A brief drizzly shower west Cambrians early in day. During afternoon, possibly odd spots from high cloud in west, but more likely dry.
Cloud on the hills?
Mostly clearing
Patchy cloud over some slopes above 700m early morning. Lifting above the summits by mid-morning.
Chance of cloud free summits?
80%
Sunshine and air clarity?
A little sun soon weakening as high cloud builds then thickens across the sky. Visibility very good.
How Cold? (at 750m)
8C rising to 11C afternoon, little change or rising a degree or so higher evening/night. Feeling like 2C in wind at first.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Sunday 6th September 2026
Last updated
Fri 4th Sep 26 at
4:17PM
How windy? (On the summits)
South to southwesterly 30 to 40mph, may rise further afternoon; very gusty in places around high terrain.
Effect of the wind on you?
Buffeting affecting ease of walking over high terrain. Feeling cool in exposure despite warm air.
How Wet?
A little rain west
Drizzle and some light rain for periods mainly southwest hills. A band of more frequent rain spreads from the west into night.
Cloud on the hills?
Mostly toward coast
Varied low cloud, but may cover areas near Irish Sea all day, but bases higher inland and often clearer mid and east Wales.
Chance of cloud free summits?
80%
Sunshine and air clarity?
Some weak sun through high cloud. Slight haze.
How Cold? (at 750m)
13C, humid all day, rising to 17C, locally warmer east. Feeling like 5 to 8C directly in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Monday 7th September 2026
Last updated
Fri 4th Sep 26 at
4:17PM
How windy? (On the summits)
Southwesterly 25 to 35mph, speeds likely rising during day to 45mph on high tops.
Effect of the wind on you?
Walking increasingly uncomfortable in exposure, strenuous conditions develop with buffeting gusts. Marked wind chill.
How Wet?
Early rain, then showery
Rain from overnight may continue through dawn, but breaking up to leave only spotty showers for a time. With time, more frequent showery rain may return.
Cloud on the hills?
Lifting to tops, some breaks
Early varied cloud over the hills, lifting during morning to mostly patches over higher tops, breaks best east & mid Wales, more frequent for periods Pen-y-Fan west above 700m. Lower patches in showers.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Glimpses of sun mainly east Wales. A slight haze, particularly southwest, visibility reduced in rain.
How Cold? (at 750m)
8 or 9C, little change all day. Feeling like 0 to -3C in the wind on tops.
Freezing Level
Above the summits.
Planning Outlook
Generally unsettled onward into next week with spells of rain and showers moving in from the Atlantic, accompanied by frequently strong to gale force mountain winds. Temperatures will vary, mildest toward the south, but cooler air moves in from the north at times bringing higher Scottish tops occasionally close to freezing point. Indications favour improving weather patterns during mid-month as high pressure builds from the south.