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.
Sunday'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.
Clear
Excellent or superb visibility, no navigation issues.
Chilly
Air temperature typically 0 to 5C on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate layers.
Click an icon for more information or click here for a key to all icons.
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.
Clear
Excellent or superb visibility, no navigation issues.
Chilly
Air temperature typically 0 to 5C on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate layers.
Viewing Forecast For
Brecon Beacons
Sunday 18th October 2026
Last updated
Sat 17th Oct 26 at
4:00PM
Summary for all mountain areas
A fine but cool day with sunshine and mountains largely free of cloud, fragments on some slopes and early mist on low terrain. Cloud banks drift onto Skye more often. Light winds for much of Scotland, a fresher northeasterly breeze for England and Wales, which brings odd light showers.
Headline for Brecon Beacons
Chilly breeze. Dry most of day with sunshine and clear hills.
How windy? (On the summits)
Northeasterly 15-20mph, tending to strengthen quite gusty, by evening 25mph, then 30-35mph onward into night.
Effect of the wind on you?
Mostly small effect on walking, though feeling chilly on high tops in any breeze, more notably later in day. Worsening conditions into night.
How Wet?
Generally dry
Chance of an odd light shower drifting in from the east later, but most of the day stays entirely dry. Some patchy rain onward into the night.
Cloud on the hills?
Soon none
A little light mist in sheltered valleys at dawn will soon lift and break up for cloud-free hills.
Chance of cloud free summits?
Above 90%
Sunshine and air clarity?
Mostly sunny, a little high cloud drifts in. Very good visibility, though some haze to start.
How Cold? (at 750m)
3C rising to 5C, or locally 6C on sun-exposed southern slopes. Feeling like 0 to -3C in breeze.
Freezing Level
Above the summits, though light patchy frosts likely in sheltered valleys at dawn, soon thawing.
Viewing Forecast For
Brecon Beacons
Monday 19th October 2026
Last updated
Sat 17th Oct 26 at
4:00PM
How windy? (On the summits)
Easterly 20 to 30mph, gusty in places around higher tops.
Effect of the wind on you?
Blustery, in places some buffeting gusts around exposed tops and considerable wind chill.
How Wet?
Rain and drizzle
Light rain and drizzle drifting across the region from the east, may persist over a few hours fairly widely, possibly drier afternoon, though damp if cloud lingers.
Cloud on the hills?
Fairly extensive, may improve
Covering most higher slopes above 600-700m in the morning, some lower banks for a time. Likely to persist on high tops into middle of day, tending to rise and break a little more during the afternoon.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Generally cloudy and dull, reduced visibility where damp, may improve gradually.
How Cold? (at 750m)
6C, little change all day. Feeling like 0 to -5C in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Tuesday 20th October 2026
Last updated
Sat 17th Oct 26 at
4:00PM
How windy? (On the summits)
Southeasterly 10 to 20mph.
Effect of the wind on you?
Fairly small.
How Wet?
Rain and drizzle
Generally damp all day, some steadier light rain, risk heavier falls developing. West Wales may see patchier rain or locally drier periods.
Cloud on the hills?
Fairly extensive, may be better west
Overcast, dull and misty from many lower slopes upward south and eastern areas. Cloud base higher westward, possibly locally much clearer toward coast.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Overcast, dull and misty from many lower slopes upward, though local brighter skies toward west Wales.
How Cold? (at 750m)
7 or 8C, little change all day.
Freezing Level
Above the summits.
Planning Outlook
The new week starts with some rain and wind in Wales and south Pennines, staying drier for much of Scotland on Monday, but with strengthening southeasterly wind, cloud increasingly shrouding all hills and becoming widely damp onward into Tuesday, blanket low cloud shrouding hills to some lower elevations. A more unsettled pattern returns widely as the week goes on as winds return to Atlantic southwesterlies. A few windows of brighter weather in eastern areas, but periods of strong wind and heavy rain into late week and next weekend as a series of fronts and low pressure systems sweep in from the southwest, risk of gales becoming severe at times on higher mountain terrain.