Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Sunday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
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.
Click an icon for more information or click here for a key to all icons.
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
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
Eryri / Snowdonia National Park
Sunday 25th January 2026
Last updated
Sat 24th Jan 26 at
4:05PM
Summary for all mountain areas
Blustery for most, gales in Scotland which will be severe on high tops early. Continued snow and local whiteout conditions on high terrain in east Scotland, snowdrifts build here. Often raining over the Pennines and south Wales, more intermittent in north Wales and Lakeland (sleet or snow on high summits).
Headline for Eryri / Snowdonia National Park
Blustery; patchy rain and often foggy, mostly east
How windy? (On the summits)
Southeasterly 30-40mph, locally stronger gusts around high tops and downslope to NW. Speeds trending towards the lower end of the range though will be variable.
Effect of the wind on you?
Blustery over most high terrain, particularly early when strongest gusts will challenge balance. Considerable wind chill.
How Wet?
Patchy rain
Occasional rain, most frequent or persistent over eastern Wales, patchier westwards. Falling as sleet or snow on the high summits.
Cloud on the hills?
Fairly extensive
Covering many high tops all day, lowest and most persistent cloud east and mid-Wales down to middle or lower slopes. Higher cloud and some breaks further northwestward, rare breaks above 700-800m here.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Largely cloudy, some haze building with time. Poor visibility over many hills in fog and precipitation, brighter and locally good visibility toward northwest.
How Cold? (at 900m)
1C. Feeling like -8 to -12C in the wind.
Freezing Level
Close to freezing on higher summits around 1000m.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 26th January 2026
Last updated
Sat 24th Jan 26 at
4:05PM
How windy? (On the summits)
Southeasterly 30mph at dawn, steadily increasing to a gusty 45-50mph by dusk, strengthening further after dark.
Effect of the wind on you?
Strenuous walking from dawn, deteriorating, challenging by dusk with buffeting. Significant wind chill.
How Wet?
Rain sets in afternoon, summit snow
Mostly dry morning, a few spots of sleet on eastern hills. Rain gradually arrives through afternoon, gradually becoming widespread into night and falling as snow on the high summits.
Cloud on the hills?
Becoming extensive afternoon
Patchy cloud on the upper slopes and summits, some breaks but more extensive east Wales. Becoming extensive afternoon as rain sets in with bases lowering to middle slopes at least.
Chance of cloud free summits?
40%, later 10%
Sunshine and air clarity?
Little sunshine expected. Good visibility at first, turning poor as rain sets in.
How Cold? (at 900m)
-1C, rising slightly with time.
Freezing Level
600-700m, lifting slightly afternoon.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 27th January 2026
Last updated
Sat 24th Jan 26 at
4:05PM
How windy? (On the summits)
Southeasterly 50-60mph at/before dawn, easing to nearer 45-50mph, though some variability.
Effect of the wind on you?
Mobility challenged likely all day, difficult early; strongest wind requires crouching for stability. Severe wind chill.
How Wet?
Often snowing
Snowing most of the morning. May become more on-and-off in the afternoon with the snow level rising to middle slopes, though also possible setting back in for periods.
Cloud on the hills?
Fairly extensive
Extensive cloud over the summits and upper slopes of Snowdonia and mid-Wales, likely all day. Western slopes may see some local higher breaks with time, though always a risk of lowering again.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Mostly cloudy, a few bright moments may break out afternoon. Visibility often very poor in precipitation, though local improvements afternoon.
How Cold? (at 900m)
-1C, lifting to 0 or +1C by afternoon. Feeling like -17C or colder in direct wind.
Freezing Level
Most terrain frozen from dawn, generally lifting though variable, only high terrain frozen by dusk.
Planning Outlook
An unsettled week ahead: a dominance of low pressure will bring periods of wet weather and gales (at times severe), to all areas. Winds will be predominantly east-southeasterly, particularly in Scotland, maintaining the cold air with freezing levels consistently to middle or lower slopes - wind chills will be severe. A near-term risk of flooding in the eastern highlands. Wind direction will be more variable in England and Wales, at times shifting south-southwesterly and drawing in milder air, brining freezing levels to upper slopes or even above the high summits. Low cloud often covering many hills with only local sunny breaks here and there.