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 26th September 2026
Last updated
Fri 25th Sep 26 at
4:30PM
Summary for all mountain areas
Strong southwesterly winds, gale-force on Scottish mountains, strengthening in the west. Showery rain and cloud banks in western Scotland, patchy rain extending inland. A little rain in the wind at times and some cloud on western hills of England and Wales, more often dry and less wind further south.
Headline for Brecon Beacons
Moderate breeze; largely dry, hills mostly clear.
How windy? (On the summits)
West turning southwesterly 15 to 20mph, typically strongest west Wales, in places 25mph at times.
Effect of the wind on you?
Fairly small.
How Wet?
Little or no rain
Substantially dry, an odd brief light shower mainly west Wales.
Cloud on the hills?
Little if any
Patchy mist some valleys at first, some brief fragments may drift upslope, mainly over hills in west and southwest-facing areas, but soon all cloud above hills.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Sunshine and well broken cloud. Visibility very good, slight haze toward west coast.
How Cold? (at 750m)
8C rising to 11C afternoon.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Sunday 27th September 2026
Last updated
Fri 25th Sep 26 at
4:30PM
How windy? (On the summits)
Southerly 25-40mph, risk abruptly reaching 50mph mainly western hills for an hour or so middle of day; later W-SW'ly.
Effect of the wind on you?
Strenuous moments in exposure, strongest gusts affecting balance with notable wind chill despite mild air.
How Wet?
Heavy rain for a time
Mostly dry early, then rain becomes frequent from west, setting in for several hours, a swathe of heavy rain passing eastward through middle of day, briefly torrential, risk thunder. Breaking up later to just brief showers and more often dry.
Cloud on the hills?
Increasingly covering high terrain
Little to start, then ragged patches lowering onto western tops, increasingly spreading east, lowering more widely to cover most high terrain, bases locally to 400-500m southern slopes during heaviest rain. Lifting again later.
Chance of cloud free summits?
80% lowering to 30% in rain
Sunshine and air clarity?
Early weak sun soon gives way to overcast skies; brightening up again later in day. Very good visibility, deteriorating with cloud/rain, poor for a time.
How Cold? (at 750m)
9C rising to 13C, notably cooling into night. Feeling like 1 to 3C in strongest wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Monday 28th September 2026
Last updated
Fri 25th Sep 26 at
4:30PM
How windy? (On the summits)
Variable west turning southerly, 10mph or often less.
Effect of the wind on you?
Small.
How Wet?
Rain unlikely
Cloud on the hills?
Largely clear
Patchy mist around some valleys from dawn, may drift briefly onto some lower hill slopes, but all dispersing.
Chance of cloud free summits?
Above 90%
Sunshine and air clarity?
Patchwork of cloud and sun, some thin high cloud in the morning. Visibility excellent.
How Cold? (at 750m)
6C rising 11C.
Freezing Level
Above the summits.
Planning Outlook
A changeable prospect during the week ahead. Sunday sees extensive rain moving in from the west with heavy bursts, accompanied by powerful southerly winds. Improving for many places into Monday as higher pressure expands in from the south, but showers and brisk winds continue toward northwest Scotland. Strong southeasterly winds by Tuesday, widely gales on mountains with turbulent downslope gusts toward the west; a risk of rain developing from the south during the day, becoming heavy later. Blustery south-southwesterlies into Wednesday and Thursday, showery in the west. Higher pressure tends to expand further north again into early October. Mostly mild temperatures.