Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Saturday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
Hazy, some fog banks
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Hazy views with lack of air clarity, particularly on lower terrain, some fog banks on hills making navigation locally more difficult. If above an inversion, the air outstandingly clear.
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.
Terrain widely frozen
All ground frozen from lower elevations upward, with hard frost or snow cover. Beware of icy surfaces on lower and higher terrain. Appropriate footwear needed, crampons may be necessary.
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Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
Hazy, some fog banks
Hazy views with lack of air clarity, particularly on lower terrain, some fog banks on hills making navigation locally more difficult. If above an inversion, the air outstandingly clear.
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.
Terrain widely frozen
All ground frozen from lower elevations upward, with hard frost or snow cover. Beware of icy surfaces on lower and higher terrain. Appropriate footwear needed, crampons may be necessary.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 22nd November 2025
Last updated
Fri 21st Nov 25 at
2:52PM
Summary for all mountain areas
As less cold air penetrates the UK, only higher summits in Scotland will remain below freezing point. Nevertheless, much mountains terrain will remain frozen and icy. Rain and strong winds overnight will have eased to in Scotland and through the morning will clear Wales and N England.
Headline for Eryri / Snowdonia National Park
Showers. Fog tending to thin. Terrain partly frozen.
How windy? (On the summits)
Southwesterly 45mph at first; veering west or northwesterly 20mph from west mid to late morning.
Effect of the wind on you?
Strenuous walking with frequent buffeting and significant wind chill morning.
How Wet?
Rain morning; clearing to the odd shower
Rain and drizzle frequent most of morning but from west easing to well scattered showers.
Cloud on the hills?
Extensive, some rising into afternoon
Shrouding even lower hills widely from dawn. Will improve, by midday, most cloud above 600m. By mid afternoon, breaks to 750m, mainly east Wales.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Dull and misty morning; slowly pockets of sun coming through and below cloud visibility becoming very good.
How Cold? (at 900m)
2 or 3C. Feeling like -5C in the wind, nearer -10C at first.
Freezing Level
Above the summits - but expect patches of still frozen terrain.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 23rd November 2025
Last updated
Fri 21st Nov 25 at
2:52PM
How windy? (On the summits)
Westerly, 30 to perhaps 40mph morning, but strengthening toward 40 to 50mph.
Effect of the wind on you?
Significant wind chill and arduous or difficult walking, particularly afternoon when general mobility may be challening.
How Wet?
Frequent rain, heavy bursts
Rain; frequent or in mid Wales showery. But may merge to persistent rain, particularly Snowdon range. Hail, and snow higher tops, and small risk thunder.
Cloud on the hills?
Extensive all day
Cloud base varied, but widely covering hills above 500-800m, lowest near to west coast, where sometimes forming on lower slopes.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Rare glimpses of sun if any. Visibility often poor in precipitation, otherwise good visibility although a haze.
How Cold? (at 900m)
Around 0C. Will feel like -13C directly in the wind later in the day.
Freezing Level
900m or above.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 24th November 2025
Last updated
Fri 21st Nov 25 at
2:52PM
How windy? (On the summits)
Northerly, 25 to 30mph.
Effect of the wind on you?
Will impede ease of walking across the hills, and at times in gusty conditions, balance may be tricky.
How Wet?
Little or perhaps no precipitation
There may be light rain, or above 800m sleet or snow now and again, most likely morning.
Cloud on the hills?
Cloud base rising - probably not clearing higher summits
Morning: cloud shrouding higher areas extensively. Gradually cloud base rising toward 750 to perhaps 900m, but patches may come and go below 600m near and north of the A5.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Patches of bright sunshine slowly coming through. Visibility very good or perhaps in afternoon excellent.
How Cold? (at 900m)
Around 0C - a marginal drop likely through the day Will feel as cold as minus 8C directly in the wind.
Freezing Level
900m.
Planning Outlook
Another brief burst of cold air on Monday and Tuesday will bring further snow to northern Scotland. By Wednesday, milder air together with rain and strong wind will be extending across Britain. Rain and strong wind will be frequent, particularly on western mountains for the remainder of the week. In Scotland temperatures on the Munros will sometimes be below freezing point, but fresh snow probably transient, whereas elsewhere, snow rare if any.