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.
Tuesday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
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.
Hazy, some fog banks
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Visibility reduced around cloud banks, hazier on some lower slopes. Locally some improvements possible out of cloud.
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.
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Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
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.
Hazy, some fog banks
Visibility reduced around cloud banks, hazier on some lower slopes. Locally some improvements possible out of cloud.
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
Tuesday 10th March 2026
Last updated
Mon 9th Mar 26 at
4:00PM
Summary for all mountain areas
Patchy rain and lowest cloud over southwest-facing hill groups. Cloud fairly extensive on hills, but higher bases and some breaks northeastwards. Gale-force winds on high terrain, speeds strengthening during day, later becoming widely severe upland gales; heavier rain arrives from west by evening.
Headline for Brecon Beacons
Windy, gales later. Varied low cloud, rare local rain.
How windy? (On the summits)
South to southwesterly; 25 to 35mph, least wind easternmost areas. Tending to strengthen, soonest in west Wales to 40mph afternoon, gusts 50mph high tops by dusk.
Effect of the wind on you?
Impeding ease of walking on higher areas. Becoming increasingly very blustery affecting balance in exposure. More arduous later in day. Marked wind chill.
How Wet?
Little or no rain until dusk
Risk of an isolated brief burst of rain. Rain more widely soon after dark, heaviest in west into evening, lasting a few hours.
Cloud on the hills?
Will come and go: clearing for a few hours before lowering afternoon
Morning: cloud base widely rising to or above 600 to 800m, but may persist Preseli hills. Afternoon: Will deteriorate from west; across Preseli and south of A40, will form above 300 to 450m, elsewhere 450 to 600m.
Chance of cloud free summits?
30%, but 70% for a few hours middle of day.
Sunshine and air clarity?
Occasional sun - possibly more widespread sun for a few hours mid and east Wales. Cloudier later. Very good visibility though a haze southwestern areas, poorer later.
How Cold? (at 750m)
5C. Feeling like -5C later -8C directly in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Wednesday 11th March 2026
Last updated
Mon 9th Mar 26 at
4:00PM
How windy? (On the summits)
Westerly up to 40mph post dawn. Will drop to typically 25 or on higher tops 30mph by midday.
Effect of the wind on you?
Expect considerable wind chill and walking to be arduous at first. By late morning, the wind still likely to impede ease of walking where exposed.
How Wet?
Showers - some hail
Occasional showers, sometimes of hail.
Cloud on the hills?
Frequently clearing
In precipitation, cloud temporarily forming below 400 to 500m. Otherwise, by midday nearly all cloud above the summits.
Chance of cloud free summits?
80% by midday
Sunshine and air clarity?
Patchwork of sunshine, most sun east Wales. Visibility mostly very good or excellent.
How Cold? (at 750m)
1C rising slowly toward 3C. Will feel like -8C directly in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Thursday 12th March 2026
Last updated
Mon 9th Mar 26 at
4:00PM
How windy? (On the summits)
Southwesterly 45 to 60mph.
Effect of the wind on you?
Difficult conditions over the mountains, any mobility challenging in exposure on tops. Significant wind chill.
How Wet?
Rain may set in heavier later
Rain on and off at least, more persistent at times over west and southern areas, patchier eastwards. Uncertain timing, but risk with time of prolonged heavier rain developing, after dark snow high tops.
Cloud on the hills?
Extensive
Covering many hills most or all day above 400-500m, at times lower on southwestern slopes. Some higher bases toward east around Black Mountains.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Overcast and dull most of day, local brighter moments east and mid-Wales. Rather hazy, poorer visibility in rain.
How Cold? (at 750m)
5C, then into evening likely to drop to 0C. Wind chill feeling like -7 to -10C.
Freezing Level
Above the summits most likely until dusk, then dropping to 800m or lower into night.
Planning Outlook
Generally unsettled this week and through the upcoming weekend as low pressure systems pass near and north of Britain - strong west or southwesterly winds prevail, often gale-force to at times storm-force over the mountains. Some fluctuation of temperature and freezing level, but mostly below freezing over Scottish mountains, at times snow falling to lower elevations. Colder for all by the end of the week with widely lowering freezing level Thursday into Friday. Frequent precipitation most western mountains, accumulations of snow across the mountains, most substantial in western Scotland from Glencoe northwards. Quieter weather patterns indicated beyond mid-month as higher pressure builds.