Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Monday'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.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
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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.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 26th January 2026
Last updated
Sun 25th Jan 26 at
4:15PM
Summary for all mountain areas
Gale-force and very gusty southeasterly winds Scottish mountains, tending to strengthen. Patchy snow and low cloud affects the eastern Highlands; largely dry and clearer toward west/northwest. Some cloud breaks for the Lakes. Rain and upland gales moves into Wales from the west in the afternoon.
Headline for Eryri / Snowdonia National Park
Gales developing, dry much of day, rain later.
How windy? (On the summits)
Southeasterly 30mph at dawn, steadily increasing to a gusty 45-50mph during afternoon, strengthening further after dark, eventually stormy winds 70mph into middle of night.
Effect of the wind on you?
Significant wind chill. Strenuous walking from dawn, deteriorating, challenging by dusk with buffeting. Severe conditions onward into night.
How Wet?
Rain develops afternoon, summit snow
Mostly dry morning, a few spots of sleet on eastern hills. Rain gradually arrives through afternoon, becoming widespread after dark and falling as snow for a time on the high summits.
Cloud on the hills?
Mostly east, more extensive later
Patchy cloud on the upper slopes and summits, some breaks best typically toward northwest. Low cloud more extensive east Wales. Becoming extensive later afternoon as rain sets in with bases lowering to mid-slopes.
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, marginal rise to 0C or just above later in day. Wind chill feeling like -10 to later -15C or colder after dark.
Freezing Level
600-700m, small change of temperature with added height; lifting slightly afternoon.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 27th January 2026
Last updated
Sun 25th Jan 26 at
4:15PM
How windy? (On the summits)
South-southeasterly 50-70mph at/before dawn, easing to nearer 45-50mph, though some variability and powerful gusts.
Effect of the wind on you?
Mobility challenged likely all day, difficult early; strongest wind requires crouching for stability. Severe wind chill.
How Wet?
Snow soon rain, becoming showery
Snow from before dawn all turning rapidly to rain to upper slopes, persistent and heavy for several hours, breaking up by midday, but then showery bursts with hail spreading from southwest in afternoon.
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)
-1 to +1C. Feeling like -17C in direct wind.
Freezing Level
Soon lifting above the summits, but may variably return to around 800m at times into afternoon.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 28th January 2026
Last updated
Sun 25th Jan 26 at
4:15PM
How windy? (On the summits)
Southeasterly 30 to 50mph - speed likely to vary during day, risk reaching 60mph western Snowdon/Yr Wyddfa group.
Effect of the wind on you?
Arduous walking conditions, very gusty around higher tops, mobility and balance difficult in places. Significant wind chill.
How Wet?
Rain unlikely
Chance of some rain spots in west if high cloud starts to thicken.
Cloud on the hills?
Varied, clearer north/west
Low cloud banks most persistent eastern hills. Varied patches on tops elsewhere, but good breaks likely toward northwest.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Occasional sun, varied high cloud. Visibility very good away from cloud.
How Cold? (at 900m)
0 or -1C, rising to +2C. Wind chill feeling like -10 to -13C.
Freezing Level
800m from dawn, rising just above freezing to higher summits during day.
Planning Outlook
Powerful southeasterlies prevail across Scotland this week and many indications favour strong east or southeasterly winds onward into the first half of February. Scottish mountains are expected stay below freezing in the extended range, fresh heavy snowfalls giving substantial depths and drifts across south and eastern areas, much less snow northwestward. Hills in England and Wales will see varying freezing levels, sub-zero for periods to 600m or lower, but intermittently lifting just above the tops - a mix of rain and upland snowfall. A generally unsettled pattern with Atlantic lows continuing to frequently circulate over Britain on a southerly track, whilst high pressure resides away to the north.