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.
Today's Forecast
Severe gale or storm, mobility very difficult
Severe conditions on the mountains, any movement very challenging, you may be blown over. 55-70mph+
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
Chilly
Air temperature near or just above freezing on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate layers.
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Severe gale or storm, mobility very difficult
Severe conditions on the mountains, any movement very challenging, you may be blown over. 55-70mph+
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
Chilly
Air temperature near or just above freezing on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate layers.
Viewing Forecast For
Brecon Beacons
Saturday 21st December 2024
Last updated
Fri 20th Dec 24 at
12:04PM
Summary for all mountain areas
Widespread storm force upland winds, strongest far north, around an intense low centred north of Scotland. Snow showers very frequent across W and NW Scotland; whilst further south showers, of snow only on higher tops. Overnight rain will clear Wales from the north morning and middle of day.
Headline for Brecon Beacons
Gale or severe gale force upland wind. Rain and low cloud later clearing.
How windy? (On the summits)
Westerly 45 to on higher tops 55mph.
Effect of the wind on you?
Considerable buffeting at times on lower slopes, whilst higher up severe wind chill and mobility often difficult. You could be blown over.
How Wet?
Rain easing to showers
Overnight rain clearing mid Wales around middle of day and then south Wales into the afternoon. The odd shower will follow.
Cloud on the hills?
Very extensive most of day - improving markedly afternoon
Morning: Fog covering the mountains, in west Wales from lower slopes. Will improve from north early afternoon as most cloud becomes confined above 700m.
Chance of cloud free summits?
Almost nil morning to in afternoon rising to 80%
Sunshine and air clarity?
Little or no sunshine. Hazy with visibility poor in rain, but becoming mostly very good from north afternoon.
How Cold? (at 750m)
6C, dropping to 4C afternoon. Will feel as cold as minus 11C directly in the wind.
Freezing Level
By dusk dropping close to highest summits.
Viewing Forecast For
Brecon Beacons
Sunday 22nd December 2024
Last updated
Fri 20th Dec 24 at
12:04PM
How windy? (On the summits)
Northwesterly 55mph; particularly gusty near precipitation.
Effect of the wind on you?
Arduous walking on lower slopes, whilst higher up severe wind chill and any mobility challenging, particularly near precipitation.
How Wet?
Showers, snow higher areas
Snow and hail showers, sometimes frequent; mostly rain below 400, later 500m. Least precipitation east Wales, where frequently dry.
Cloud on the hills?
Extensive on higher areas
Near precipitation cloud sometimes below 400m particularly west Wales, but breaks to 750m. Summits in east Wales may well frequently clear.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Sunshine, mainly east Wales; only occasional sun west. Very varied visibility, sometimes excellent, but appalling in snow.
How Cold? (at 750m)
0C, may rise marginally through the day. Will feel as cold as minus 18C directly in the wind.
Freezing Level
700m.
Viewing Forecast For
Brecon Beacons
Monday 23rd December 2024
Last updated
Fri 20th Dec 24 at
12:04PM
How windy? (On the summits)
Northwest backing westerly; easing from 30, perhaps 35mph at first, perhaps temporarily 25mph.
Effect of the wind on you?
Anticipate periods of considerable wind chill and arduous walking.
How Wet?
Rain spreading east
The odd snow shower morning. Rain spreading east later morning or middle of day (timing uncertain).
Cloud on the hills?
Deteriorating as cloud later envelops lower slopes
Moderate confidence of cloud lifting to or above 750m east Wales for a few hours. But anticipate deterioration as rain approaches: cloud filling in from many lower slopes up west Wales and 500m elsewhere.
Chance of cloud free summits?
40% dropping from west to 10%
Sunshine and air clarity?
Little or no sunshine as cloud thickens from west. Visibility very good; later poor in rain.
How Cold? (at 750m)
0C, perhaps 4C before dusk. Will feel as cold as minus 79C directly in the wind.
Freezing Level
Near or increasingly above highest tops.
Planning Outlook
A change in the weather pattern from Tuesday as high pressure progressively envelops Wales and England. Here, as in S Scotland, extensively dry and much less windy. Mild - although frost in valleys some nights. Still windy Scottish Highlands, here very mild with lying snow substantially melting. Rain frequent NW Highlands, and less so W Highlands. Further east little or no rain.