Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Tuesday'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.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
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.
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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.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
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.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 3rd March 2026
Last updated
Mon 2nd Mar 26 at
3:56PM
Summary for all mountain areas
A breezy start in Scotland, particularly in the north, the wind easing to fairly small effects; light wind England and Wales. Dry and sunny for most hills, chilly temperatures. Some light rain affecting south Wales through the day, the associated cloud drifting into north Wales and the south Pennines with time.
Headline for Eryri / Snowdonia National Park
Light wind and often sunny, some cloud forming later
How windy? (On the summits)
Northeasterly 10-15mph from dawn, shifting easterly then southeasterly with time, becoming gusty on high terrain and downslope to the west, up to 20mph.
Effect of the wind on you?
Mostly small.
How Wet?
Precipitation unlikely
A chance of some light patchy rain approaching from the south late in the day, though may be entirely dry during daylight.
Cloud on the hills?
Clear for several hours, then some cloud from south and east
Some varied cloud patches in the morning, including mist around sheltered valleys, soon lifting and dissipating. With time, a risk of low cloud arriving into mid- and east-Wales, mostly above 600-700m, though likely just patches on high tops in Snowdonia during daylight.
Chance of cloud free summits?
90%, lowering to 70%
Sunshine and air clarity?
Mostly sunny well into the day, though a veil of high cloud to the south, pushing northward with time. Visibility very good, some haze or mist early in day.
How Cold? (at 900m)
2 or 3C. Beginning to rise late in the day, likely by several degrees overnight (just high slopes; low slopes will cool again into night).
Freezing Level
Above the summits, though may just touch the high summits from overnight, soon lifting after dawn.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 4th March 2026
Last updated
Mon 2nd Mar 26 at
3:56PM
How windy? (On the summits)
Southerly 20 to 25mph, in places gusty 30mph around higher tops.
Effect of the wind on you?
Blustery over higher terrain, affecting ease of walking and balance on exposed ridges. Marked wind chill.
How Wet?
Little if any precipitation
Risk of occasional fine drizzle around cloud but largely dry.
Cloud on the hills?
Some cloud banks, likely to lift
Varied cloud banks in the morning tending to lift and gradually break above many hills. Areas north and northwest of Ogwen valley clearer overall, broken patches. Cloud may cling to the high tops and high Berwyn group.
Chance of cloud free summits?
40% rising to 80%
Sunshine and air clarity?
Sunshine most common north coastal areas, may break through western areas more widely. Some haze, particularly coasts, but visibility fairly good inland.
How Cold? (at 900m)
6 or 7C. Directly in the wind, feeling near or below freezing.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Thursday 5th March 2026
Last updated
Mon 2nd Mar 26 at
3:56PM
How windy? (On the summits)
South-southwesterly 20-30mph, a gradual easing, towards 15-20mph evening, may lower for a time into night.
Effect of the wind on you?
Strenuous walking with a notable chill in exposure early; improving, may become fairly small.
How Wet?
Risk afternoon showers
The morning likely dry, then a risk of showers in the afternoon which may be locally heavy. Into evening, patchy rain lingers.
Cloud on the hills?
Clear periods for a time, deteriorating
Ribbons/banks of cloud at several elevations in the morning, some ragged patches possible on lower slopes too, but soon lifting and dissipating. Highest tops likely capped most of the day, then a more extensive layer of cloud arrives with time.
Chance of cloud free summits?
50% early, lowering to 20%
Sunshine and air clarity?
A few glimpses of weak sun early but otherwise overcast. Visibility limited by haze.
How Cold? (at 900m)
6 or 7C, beginning to lower late in the day, by several degrees overnight. Feeling around freezing in early wind.
Freezing Level
Above the summits.
Planning Outlook
Varying conditions over the next couple of weeks as areas of high pressure build across the British Isles then slip eastwards. Some dry and bright days with light winds mixed with periods of strengthening southerly winds bringing occasional rain coming in from the west - Thursday this week sees rain move increasingly onto northwestern hills. Temperatures will vary, often lifting just above freezing to higher tops, but occasionally dropping back below freezing - chillier air briefly later this week. Some frosts into valleys during clear-sky nights. Remaining old snow cover on Scottish mountains stays largely consolidated with little change, only patchy around highest tops in England and Wales with little impact on walking.