Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Monday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Snow and rain mix
Precipitation falling mostly as snow on higher terrain, rain on low-to-middle elevations, may turn to sleet or rain higher up.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
Winter kit required on higher terrain
Snow cover over higher mountains. Safe progress over some terrain will require suitable footwear - possibly crampons and ice-axe where necessary.
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.
Snow and rain mix
Precipitation falling mostly as snow on higher terrain, rain on low-to-middle elevations, may turn to sleet or rain higher up.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
Winter kit required on higher terrain
Snow cover over higher mountains. Safe progress over some terrain will require suitable footwear - possibly crampons and ice-axe where necessary.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 16th February 2026
Last updated
Sun 15th Feb 26 at
3:30PM
Summary for all mountain areas
Snow over northwestern mountains in Scotland will tend to extend further into Lochaber and Cairngorms by afternoon as NW'ly winds strengthen, some hail mixed in. Strong westerlies for England, gale-force on Welsh mountains, heavy showers merging into longer periods rain, snow confined to higher tops.
Headline for Eryri / Snowdonia National Park
Windy, to gale force. Rain or high-level snow, often heavy, hail.
How windy? (On the summits)
Westerly 35 to 40mph, squally stronger gusts at times in heavier showers, may lessen a little during afternoon, trending more northwesterly later.
Effect of the wind on you?
Strenuous walking conditions, affecting balance over exposed tops and ridges, at times more challenging. Considerable to sometimes significant wind chill.
How Wet?
Frequent to persistent rain, hill snow, hail.
Showers merging into frequent or constant heavy precipitation, setting in persistently over an hour or more around middle of day, then back to showers. Snow falling over hills above 600-700m, wetter to 800m afternoon. Risk of hail and isolated thunder.
Cloud on the hills?
Extensive
Cloud base varying, between 300m near precipitation toward coasts, otherwise 500 to 700m, occasional higher breaks eastern mid-Wales.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Largely cloudy, glimpses of sun mostly east Wales. Very varied visibility; very poor or appalling in snow, occasionally good.
How Cold? (at 900m)
0 or -1C. Then dropping overnight toward -4C. Daytime wind chill feeling like -10 to -15C on exposed higher areas.
Freezing Level
800m to 900m, briefly slightly higher afternoon away from precipitation. Then into night dropping below 500-600m, frost forming into some valleys.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 17th February 2026
Last updated
Sun 15th Feb 26 at
3:30PM
How windy? (On the summits)
Northerly 20 to 30mph early morning, risk stronger up to dawn, but dropping, to NE'ly 15-20mph, or less during afternoon.
Effect of the wind on you?
Prepare for considerable wind chill in the morning, blustery conditions for a few hours at least, but improving.
How Wet?
Local early showers clear
Risk snow and hail showers over Irish Sea affecting Snowdon range in the morning, fading out.
Cloud on the hills?
Largely or all clearing
Banks of cloud on higher slopes in northern areas in the morning. By afternoon mountains largely or completely free of cloud.
Chance of cloud free summits?
40% rising to 80% by afternoon
Sunshine and air clarity?
Patchy cloud and sun, becoming sunnier, soonest mid Wales. Excellent visibility.
How Cold? (at 900m)
-3 or -4C. Early in day, feeling like -12C directly in the wind, easing.
Freezing Level
400 to 600m, highest toward west coast.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 18th February 2026
Last updated
Sun 15th Feb 26 at
3:30PM
How windy? (On the summits)
Southeasterly 40-50mph; constant powerful gusts over high terrain and passes, topping out at 70mph.
Effect of the wind on you?
Widely challenging conditions with severe wind chill; powerful gusts make staying on your feet constantly difficult.
How Wet?
Most likely dry
A risk of occasional snow flurries drifting onto southern and western slopes, but more likely dry.
Cloud on the hills?
Some cloud over tops later
The hills mostly free of cloud, but with time, an increasing chance of cloud caps grazing the high tops of mid-Wales and perhaps later capping Yr Wyddfa (Snowdon) as well.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Weak sun through high cloud, may trend more overcast with time. Very good visibility though an early haze.
How Cold? (at 900m)
-3C. Feeling like -20C or colder in exposure.
Freezing Level
300-400m, rising north and west of high terrain but poorly defined, some thaws may reach up to 700m.
Planning Outlook
Much terrain frozen into midweek, frost into valleys and glens. Uncertain extent of strengthening winds by Wednesday, and possible snow moving into Wales. Late in the week and through next weekend, a switch to southwesterly winds is expected, bringing a change to milder conditions - lifting above freezing to tops in England and Wales, and generally higher freezing levels in Scotland; periods of thawing likely over the mountains, though some further snowfall at times on higher Munros. Rain most frequent over western hills. Generally windy with upland gales.