Includes all higher summits in the southern half of Wales: the Bannau Brycheiniog / Brecon Beacons National Park, southern Cambrian Mountains and highest Preseli hills.
Brecon Beacons
Tuesday 6th January 2026
Last updated
Mon 5th Jan 26 at
4:30PM
Intermittent snowfall to lower slopes pushes widely eastwards, increasingly more prolonged and heavier snow from the west across the Highlands, though near the west coast becoming sleet or rain to mid-heights. Hill snow and rain lower down setting in for England and Wales from the west afternoon. Wind varied, but tending to strengthen.
Snow flurries, later snow-rain mix. Increasingly windy.
Westerly 20-25mph, increasing with time to 35-40mph during afternoon, stronger gusts 50mph for a time by dusk, easing slightly evening hours, but then northwesterly 40-50mph into night.
Walking becoming strenuous with time, more arduous later, buffeting gusts; significant wind chill.
Patchy snow, mostly in the west, later rain to mid-slopes.
Bands of patchy snow passing west-to-east through the day; very little precipitation east of Brecon. Becoming more frequent hill snow up to dusk, becoming rain to mid or some upper slopes in west.
Mostly high west terrain, variably lower
Variable cloud on high terrain, some breaks off summits, but lowering to middle slopes during snow showers. A trend towards more persistent cloud with time afternoon. Easternmost mountains may only see cloud on high terrain during daylight.
30%
Some bright/sunny spells will break out, but cloud will be extensive for periods too. Variable visibility, very good for periods, but rapidly deteriorating to very poor in snow.
-2C, rising slightly with time, reaching 0C from dusk, but starting to lower overnight. Feeling like -13C in direct wind.
Terrain widely frozen from dawn, lifting with time to 400-600m, up to 800m or briefly higher by evening, especially in west, then falling gradually again well into night.
Brecon Beacons
Wednesday 7th January 2026
Last updated
Mon 5th Jan 26 at
4:30PM
Northwesterly 25 to 35mph, strongest around dawn, lessening afternoon, shifting westerly; increasing again into night.
Be prepared for marked wind chill on exposed high terrain, risk very blustery at first, becoming smaller during daytime.
Largely dry, rare showers
Isolated coastal showers, flurries on hills locally in west. Largely dry east. Into night, risk some sleet or rain moving in from west.
Patches locally, clearer east/south
Patchy cloud over higher tops, mostly western areas, but possibly good breaks to many tops across Brecon Beacons and east Wales during the daytime.
70%
Mix of cloud and sun, some high cloud moving in from west later. Visibility mostly very good.
-1C, tending to rise mainly after dark. Feeling as cold as -12C if exposed to stronger wind early in day.
Slight frost inland valleys at first. Otherwise 500-600m, or slightly higher west Wales, but icy surfaces likely.
Brecon Beacons
Thursday 8th January 2026
Last updated
Mon 5th Jan 26 at
4:30PM
Direction and speed likely to vary: mostly westerly for a time, 10 to 20mph. May strengthen rapidly evening-night.
Mostly small during daytime.
Patchy light snow
Occasional snow flurries on tops, sleet or rain to mid-slopes. Toward evening and night, risk of more persistent snow developing.
Varied cloud and fog
Patchy cloud around some higher tops, possible fog some valleys also. Risk cloud banks developing and lowering more widely over hills.
40%
Varied cloud and weak sun, thin high cloud may thicken to cover the sky. Visibility very good, possible haze lower down.
-1C.
700 to 800m, partly frozen terrain lower down, slight frost from dawn inland valleys. May then lower considerably later.
Freezing conditions persist this week - some changes by the weekend as Atlantic lows try to circulate further northwards, bringing a period of thawing mainly to England and particularly Wales, whilst Scottish mountains may see brief if any periods of above-freezing conditions even onward into mid-month. Complex weather systems, with potentially a deep low moving across southern Britain by Thursday-early Friday this week which may bring some snowfalls to Wales and the southern Pennines. Often lighter winds in Scotland for a few days, but another low may track further north later in weekend bringing widespread gales, and mostly rain to England and Wales, snow and lowland rain to Scotland.