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
Gale force, walking arduous
Considerable buffeting, walking into the wind will be strenuous on exposed terrain, stronger gusts may knock you off your feet. 40 to 55mph.
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 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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Gale force, walking arduous
Considerable buffeting, walking into the wind will be strenuous on exposed terrain, stronger gusts may knock you off your feet. 40 to 55mph.
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 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
Saturday 20th December 2025
Last updated
Fri 19th Dec 25 at
7:02PM
Summary for all mountain areas
South to south-easterly winds, reaching gale force for western hills, local drizzly showers southwestern Scotland as well as Wales, with rain into Pembrokeshire later. Elsewhere, areas of weak sun and low cloud. Low cloud focused on eastern side of Pennines and also southern and eastern Highlands.
Headline for Brecon Beacons
Strong to gale force winds. Mostly dry, rain later in west. Fairly extensive low cloud.
How windy? (On the summits)
South to south-easterly 25 to 40mph, but up to 50mph for a time hills west of Brecon.
Effect of the wind on you?
Walking arduous, or near west coast difficult, with a very turbulent airflow. Significant wind chill and buffeting.
How Wet?
Isolated showers, persistent rain later in west.
Mostly dry, but scope for a few drizzly showers. Later as a front edges in from the west, heavy rain will move in to Pembrokeshire, perhaps into night more widley into hills west of Brecon.
Cloud on the hills?
Fairly extensive
Fairly extensive cloud banks of cloud covering upper slopes or tops through the day, but some occasional breaks.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Very likely overcast. Visibility good at times, but poor in rain.
How Cold? (at 750m)
3 or 4C. Directly in the wind feeling like -10C.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Sunday 21st December 2025
Last updated
Fri 19th Dec 25 at
7:02PM
How windy? (On the summits)
Easterly 25 to 40mph
Effect of the wind on you?
Very blustery, gusty winds, with sudden, strong gusts running downslope from ridges and passes. Significant wind chill.
How Wet?
Rain may become heavier and persistent
Patches of rain or drizzle at first, but through the day a batch of heavier and more persistent rain may well spread up from the south.
Cloud on the hills?
Widespread, especially in rain
Hill fog will very likely be extensive across the hills through the day. Best of any breaks will be toward the west coast.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Extensively dull. Visibility perhaps good at times, but marked haze and poor when in rain.
How Cold? (at 750m)
Around 3 or 4C
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Monday 22nd December 2025
Last updated
Fri 19th Dec 25 at
7:02PM
How windy? (On the summits)
Southeasterly 15 to 25mph
Effect of the wind on you?
Blustery at times with marked wind chill where exposed to the wind.
How Wet?
Early rain and drizzle, then isolated patches.
A warm front and its widespread rain clears early, but further patches of rain or drizzle may follow, but small amounts.
Cloud on the hills?
Fairly extensive, but breaks west coast.
Extensive at varying heights in rain. As rain clears, varied conditions with banks widely on some hills, whilst cloud lifting off other nearby hills, at least for a time.
Chance of cloud free summits?
20%, but 60% westernmost hills.
Sunshine and air clarity?
Little or no sun. Visibility poor in rain, but tending to become good, despite a slight haze.
How Cold? (at 750m)
3C
Freezing Level
Above the summits
Planning Outlook
A much drier and chiller theme develops into the Christmas period and perhaps into the New Year, as high pressure builds to the north and northeast and maybe later in the period overhead over Scotland when inversion conditions would be in place. An extensive cloud sheet will likely come in from the North Sea over many days with light snow showers or flurries likely, rain to lower slopes, but many areas dry. Best breaks in the west.