Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Saturday's Forecast
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Snow and hail showers
Periods of bright or sunny conditions mixed with showers or flurries of snow and hail. Visibility may change rapidly from excellent to very poor.
Hazy, some fog banks
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Visibility reduced around cloud banks, hazier on some lower slopes. Locally some improvements possible out of cloud.
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.
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Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Snow and hail showers
Periods of bright or sunny conditions mixed with showers or flurries of snow and hail. Visibility may change rapidly from excellent to very poor.
Hazy, some fog banks
Visibility reduced around cloud banks, hazier on some lower slopes. Locally some improvements possible out of cloud.
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
Saturday 14th March 2026
Last updated
Fri 13th Mar 26 at
12:32PM
Summary for all mountain areas
Very much less windy, especially England and Wales in afternoon. But still cold day with hail and snow showers, and particularly Wales away from western hills spells of sun. The snow will penetrate to lower slopes in Scotland but be confined above 600m elsewhere.
Headline for Eryri / Snowdonia National Park
Much less windy, particularly afternoon. A few snow showers.
How windy? (On the summits)
Westerly, 25mph after dawn to 20mph around midday and perhaps 15mph mid afternoon.
Effect of the wind on you?
Becoming fairly small. Considerable wind chill morning.
How Wet?
Hail and snow showers.
Showers of hail and above 600m, snow: mostly morning. Few showers afternoon.
Cloud on the hills?
Cloud base rising; most summits at least intermittently clearing afternoon
Varied cloud base: sometimes below 450m near precipitation until mid or late morning. Generally though cloud base rising, with cloud only intermittent above 800 or 900m from midday.
Chance of cloud free summits?
20% rising to 70%
Sunshine and air clarity?
Glimpses of sun, mainly more eastern areas, at first; slowly improving to a patchwork of sun. Hazy, and very poor visibility in snow morning; mostly very good or excellent visibility afternoon.
How Cold? (at 900m)
-1C; varying by a degree or two as showers come and go. Will feel as cold as minus 12C directly in the wind.
Freezing Level
800m
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 15th March 2026
Last updated
Fri 13th Mar 26 at
12:32PM
How windy? (On the summits)
Southwest veering west typically between 35 and 45mph, perhaps 60mph morning. Risk strengthening further toward dusk.
Effect of the wind on you?
Continued difficult walking and wind chill significant on exposed higher areas. Expect balance, and in places general mobility to be difficult.
How Wet?
Rain morning; clearing to showers
Morning: Extensive rain. Middle of day: Clearing from west, but the rain finishing as snow above 700m Afternoon: Hail and snow showers (rain lower slopes).
Cloud on the hills?
Hills covered morning; then cloud base rising markedly
Morning: Blanket of fog across the hills, breaks to 700m west Wales. Middle of day: Beginning to improve. Into afternoon: Varying cloud base, between occasionally 500m near precipitation and otherwise 750 to 900m.
Chance of cloud free summits?
Less than 10% morning; later 40%
Sunshine and air clarity?
Dull and misty morning. Then improving to patchy sun (mainly east Wales) and mostly very good visibility (temporarily poor in precipitation).
How Cold? (at 900m)
4C dropping to 0 or -1C. Will feel as cold as minus 12C where exposed to the wind.
Freezing Level
Above the summits morning, then dropping to between 650 and 900m.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 16th March 2026
Last updated
Fri 13th Mar 26 at
12:32PM
How windy? (On the summits)
Westerly; easing from 40-45 to 30-35mph through morning. Strengthening again toward dusk.
Effect of the wind on you?
Significant wind chill and arduous or at times difficult walking. Balance may well be a struggle at least in morning.
How Wet?
Snow showers, then rain & drizzle.
Showers, of snow above 450m after dawn. Possibly dry for a few hours before periods rain and drizzle (temporarily snow higher areas). The rain persistent western mountains, but on and off east Wales.
Cloud on the hills?
May clear to higher slopes temporarily - then considerable deterioration.
Generally fog higher areas all day, in the afternoon widely below 300-400m westernmost slopes to 500-700m east Wales. Perhaps a period later morning when most cloud above 800m (especially east Wales) later morning.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Glimpses of sun temporarily before cloud thickens: becoming dull and misty.
How Cold? (at 900m)
-1C, rising to 0C morning; later 3 or 4C. Will feel as cold as minus 15C due to wind chill.
Freezing Level
750m morning, but rising slowly. Abruptly above the summits later in day.
Planning Outlook
Frequent upland gales until Tuesday - generally strongest Scottish Highlands. Precipitation will continue on most mountains, focussed in the west - lengthy periods of showery weather and occasional swathes of widespread rain. Freeze thaw cycles will continue: on the Scottish Highlands, thaw periods brief and snow widely accumulating. Further south, lying snow mostly confined to higher summits. There is now high likelihood of an abrupt transition mid-week as pressure builds north of Britain: extensively fine; cloud often clearing, particularly western Britain and temperature levels more varied - fairly warm some afternoons but frost widely at night.