Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Tuesday's Forecast
Severe gale or storm, mobility very difficult
Severe conditions on the mountains, any movement very challenging, you may be blown over. 55-70mph+
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
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.
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Severe gale or storm, mobility very difficult
Severe conditions on the mountains, any movement very challenging, you may be blown over. 55-70mph+
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
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.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 27th January 2026
Last updated
Mon 26th Jan 26 at
4:20PM
Summary for all mountain areas
Severe conditions - storm-force winds on mountains, damaging gusts to some lower terrain. Extensive hill snow for N England & S Scotland, snow setting in heavier with time for southern Highlands; blizzard conditions widely, rain only lower slopes. Showery bursts follow in Wales with risk of hail and thunder.
Headline for Eryri / Snowdonia National Park
Severe gales. Heavy rain then showery in west.
How windy? (On the summits)
South-southeasterly 50-70mph, strongest at/before dawn, easing to nearer 45-50mph middle of day, though some variability and powerful gusts, increasing for a time again later afternoon to 60mph.
Effect of the wind on you?
Mobility challenging all day, very difficult early; strongest wind requires crouching for stability. Severe wind chill.
How Wet?
Snow soon rain, becoming showery
Snow before dawn all turning rapidly to rain to upper slopes, persistent and heavy at first, breaking up by mid morning, but then showery bursts with hail spreading from southwest, chance isolated thunder and lightning in west.
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 or 2C, dropping to 0 or -1C. Feeling like -17C in direct wind.
Freezing Level
Above the summits from before dawn, but variably lowers to around 800m at times into afternoon.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 28th January 2026
Last updated
Mon 26th Jan 26 at
4:20PM
How windy? (On the summits)
Southeasterly 30 to 45mph - locally varied during day, but typically strongest gusts western Snowdon/Yr Wyddfa group.
Effect of the wind on you?
Strenuous walking conditions, gusty in places higher tops, balance challenging in places. Significant wind chill.
How Wet?
Rain unlikely
Chance of some rain spots in west if high cloud thickens.
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)
0C rising to 2C. Wind chill feeling like -10 to -13C.
Freezing Level
Close to freezing on some higher slopes from dawn, but tending to lift just above most high tops above 1000m.
Viewing Forecast For
Eryri / Snowdonia National Park
Thursday 29th January 2026
Last updated
Mon 26th Jan 26 at
4:20PM
How windy? (On the summits)
Southeasterly 35 to 50mph, stronger gusts in places through elevated passes and downslope west of higher tops.
Effect of the wind on you?
Challenging walking on exposed higher terrain, buffeting gusts not just on the highest terrain. Significant wind chill.
How Wet?
A little rain or hill snow mostly east
Patchy rain, falling as sleet or snow above 800m, most common Bala to Berwyn, patchier west, may be very little near coast.
Cloud on the hills?
Fairly extensive, breaks northwest
Covering many hills, lowest and most persistent eastern areas, some breaks above 800m north/west of Snowdon.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Fairly cloudy, some brighter moments toward northwest, where visibility good if day. Mostly hazy, poorer if in rain/snow.
How Cold? (at 900m)
0 or -1C. Wind chill feeling like -12 to -15C.
Freezing Level
Variable, possibly as low as 600m in east, but just above freezing to some slopes above 900m further west.
Planning Outlook
Strong east or southeasterly winds likely to prevail onward into early 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.