Includes all higher summits in the southern half of Wales, including highest point in Preseli Hills.
Brecon Beacons
Friday 22nd January 2021
Last updated
Thursday 21st January 2021 at
2:57 PM
Very cold across the mountains - terrain widely frozen, very icy in places, plus lying snow in most areas. Brisk west to northwest winds will maintain a severe chill factor in exposure. Areas of snow or hail showers moving inland from western coasts.
Cold, brisk wind. Local snow or hail showers.
Westerly 15 to 25mph.
Walking impeded at times, significant wind chill in exposure on tops.
Scattered snow and hail showers
Occasional snow or hail showers moving inland from the west coast, briefly heavy, chance isolated thunder. Greatest risk of showers reaching the Brecon Beacons is into the afternoon. Eastern hills may remain largely dry all day.
Breaks to tops
Most cloud often confined to patches on high tops, and breaks frequent. However, where snow occurs, shafts of cloud briefly below 500m.
60%
Brief glimpses of sun and often very clear air. Visibility abruptly very poor in showers.
-2C. Where exposed to wind on higher terrain, feeling as cold as -12C.
450-600m, but also frost in some valleys in the morning. Very icy underfoot.
Brecon Beacons
Saturday 23rd January 2021
Last updated
Thursday 21st January 2021 at
2:57 PM
Northwesterly 20 to 25mph.
Walking impeded at times on higher terrain. Significant wind chill.
Snow or hail showers
Snow and hail showers continue to come in from the west, sometimes frequent and heavy in west. Small risk isolated thunder. Few showers reaching east Wales.
Patches high tops
Cloud base varied, may often cap higher slopes in west Wales, below 600m in showers. Breaks more common in eastern areas.
40%
Brief sun and very clear air. Visibility locally very poor in showers.
-3C
Most terrain frozen from dawn. Partial thawing lower slopes up to 300-400m.
Brecon Beacons
Sunday 24th January 2021
Last updated
Thursday 21st January 2021 at
2:57 PM
Direction may vary, mostly westerly, occasional lulls, but risk strengthening to 30-40mph for several hours.
Sometimes small, but beware of deteriorating conditions and significant wind chill.
Risk periods of snow and hail
Detail uncertain: Areas of snow or hail showers coming in from the west. May merge into a zone of constant snow for a few hours. Also periods where dry for several hours locally. Isolated thunder.
Extensive around precipitation
Cloud varied - sometimes only fragments on higher slopes, with good breaks. Around precipitation, forming extensively and quickly below 700m.
40%
Intermittent sun and very clear air. Visibility abruptly appalling if in snow.
-4C
Terrain widely frozen. May rise above zero up to 300-400m for a time.
All mountains sub-zero through the weekend and into early next week. Terrain widely frozen with fresh snow cover to many lower slopes. Some freeze-thaw cycles may then occur, although higher Scottish mountains may rarely lift above zero for the next couple of weeks at least. Showers of snow and hail, or further significant snowfalls in some areas. Precipitation frequent into late January. Hard frosts most common in Highland glens. Very icy underfoot in places. Wind speeds varied, occasionally reaching gale force.