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.
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
Friday 11th September 2026
Last updated
Thu 10th Sep 26 at
4:30PM
Summary for all mountain areas
Fresh westerly winds will be strongest in northern Scotland, speeds lessening a little during the day, but feeling cool in exposure on tops. Light showers mainly in western Scotland tends to fade. Cloud often capping western tops, breaks forming higher with time; clearer hills toward east.
Headline for Brecon Beacons
Breeze eases. Largely dry, cloud lifts and breaks.
How windy? (On the summits)
West-northwesterly 20mph to start, easing, to largely 10mph later. Tending to increase again well into night toward 30mph.
Effect of the wind on you?
Small; a little early breeze in exposure feeling cool. Some deterioration onward through the night.
How Wet?
No rain expected most areas
A rare brief drizzly shower near Cardigan Bay early morning soon fading.
Cloud on the hills?
Early cloud lifts, increasing summits breaks
Most terrain above 700m starts shrouded, more extensively low Cambrians and western Brecon Beacons; southern slopes clearest of cloud. With time, a lifting trend, breaking up, to just banks rolling over summits then more often clear afternoon.
Chance of cloud free summits?
50% rising to 80%
Sunshine and air clarity?
Sunshine increasingly breaks out, notably southern Brecon Beacons. Good visibility, though a haze building.
How Cold? (at 750m)
10 or 11C, little change all day. Feeling like 3 to 5C on tops in early wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Saturday 12th September 2026
Last updated
Thu 10th Sep 26 at
4:30PM
How windy? (On the summits)
Southwesterly, generally rising during day 25 to 40mph, some stronger gusts develop.
Effect of the wind on you?
Increasingly strenuous walking conditions, strengthening gusts around high tops affecting balance.
How Wet?
Rain develops from north during day
Spots in the wind, but much of the region see little rain until into afternoon. Increasing risk of steadier then heavier rain developing from the northwest, extending to much of Brecon Beacons later in day.
Cloud on the hills?
Varied, mostly west, lowering
Varied banks of cloud drift onto hills mostly in west, breaks to upper slopes for many hours in more eastern areas. Filling in and lowering with time from west.
Chance of cloud free summits?
50%
Sunshine and air clarity?
Overcast, some brighter skies through high cloud. Visibility good, but some haze, reducing in rain.
How Cold? (at 750m)
10C rising to 14C. Feeling increasingly like 0C directly in wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Sunday 13th September 2026
Last updated
Thu 10th Sep 26 at
4:30PM
How windy? (On the summits)
West-northwest 20-25mph at dawn, easing during morning, to 10mph by middle of day, later SW'ly. Rising again by evening.
Effect of the wind on you?
Feeling chilly in a fresh breeze early morning, becoming small most of day.
How Wet?
Substantially dry
An odd drizzly shower on west coastal hills early in the day, otherwise likely dry.
Cloud on the hills?
Varied early cloud lifts and breaks
Patchy cloud mostly over western hills in the morning, some banks over western Cambrians to lower slopes for a time, well broken further southeast. Cloud lifts, but may come and go on western tops, often clearer in east.
Chance of cloud free summits?
50% west, rising to 80% east.
Sunshine and air clarity?
Variable sunshine and cloud, a veil of high cloud to south in morning; sunnier near coast afternoon. Visibility excellent.
How Cold? (at 750m)
10 to 12C, little change all day and night, warmest toward the east. Feeling like 3 to 5C in early wind.
Freezing Level
Above the summits.
Planning Outlook
Changeable west-southwesterlies prevail through mid September; often windy, gale-force winds for periods over higher terrain. An active frontal system sweeps southeastward on Saturday with a sustained fall of rain, accompanied by upland gales for most places. Improving for better weather on Sunday, then wind and rain returns into Monday, staying showery into Tuesday. A mixed outlook likely continues later next week with rain most frequent in western Scotland. Temperatures varying, some cooler days especially in Scotland, but often fairly mild further south, at times quite warm and humid.