Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Friday's Forecast
Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
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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Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
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
Friday 16th October 2026
Last updated
Thu 15th Oct 26 at
4:18PM
Summary for all mountain areas
Bright sun and showers, mostly chilly temperatures. Showers cluster for steady falls and heavy bursts with hail, first in Scotland (snow on high Munros), then into England and Wales afternoon. Showers tend to scatter into evening, though sometimes returning to north parts of Scotland and Wales.
Headline for Eryri / Snowdonia National Park
Patchy sun, afternoon showers with heavy bursts
How windy? (On the summits)
Northwesterly 20-25mph, some notable gusts forming over high tops, approaching 30mph or higher later, and trending northerly.
Effect of the wind on you?
Often fairly small; walking at times impeded on high terrain, buffeting gusts forming later.
How Wet?
Afternoon showers
Scattered showers in the morning, moving southeast into mid-Wales. With time, showers will tend to increase, a few afternoon hours of more frequent showers, steadiest falls northern slopes, but scattering again overnight.
Cloud on the hills?
Varied on high terrain, increasing afternoon
Ragged cloud clings to the hills around dawn, a thicker deck of cloud on high terrain towards north and west slopes. Cloud will lift, varying around 800m in showers, but often just capping tops during dry windows, but will then more often shroud terrain above 700m for several afternoon hours when showers become more frequent.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Patchy sun, best of sun towards Berwyn group, and trending more often cloudy for several afternoon hours, particularly northern areas. Good visibility, some haze towards coasts.
How Cold? (at 900m)
3 or 4C, will vary slightly in showers.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 17th October 2026
Last updated
Thu 15th Oct 26 at
4:18PM
How windy? (On the summits)
Northeasterly 10-15mph, may gust up to 20mph over high tops.
Effect of the wind on you?
Mostly small.
How Wet?
Little or none
A little spotty light rain/sleet may drift into northern Snowdonia NP in the morning, but soon fading for dry hills.
Cloud on the hills?
Mostly just northern high tops
Patchy banks at varied heights in the morning, some mist in sheltered valleys. May be more extensive on high terrain near and north of the Ogwen valley to start, but cloud will lift and tend to break up from sunrise, to just passing banks over Snowdon and high Carneddau summits, ultimately clearing.
Chance of cloud free summits?
40%, gradually rising to reach 80%
Sunshine and air clarity?
Mostly sunny, a little fair weather cloud at times, more cloudy northernmost areas in the morning. Very good visibility.
How Cold? (at 900m)
3C, may rise a degree south and west of high tops.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 18th October 2026
Last updated
Thu 15th Oct 26 at
4:18PM
How windy? (On the summits)
Northeasterly 10-15mph, tending to strengthen somewhat and quite gusty.
Effect of the wind on you?
Fairly small, though some blustery moments increasingly on high tops.
How Wet?
Rain unlikely
Small risk a little rain drifting into east Wales late in the day, but more likely dry.
Cloud on the hills?
Little or none
A little light mist in sheltered valleys will soon lift and break up for largely cloud-free hills. A small chance of a little ragged cloud drifting around high terrain but may stay entirely clear.
Chance of cloud free summits?
80%
Sunshine and air clarity?
Mostly sunny, a little high cloud may form. Very good visibility.
How Cold? (at 900m)
3C, may rise a degree.
Freezing Level
May be just at or above highest summits, but also patchy frosts in sheltered valleys at dawn.
Planning Outlook
A window of more settled weather this weekend as a core of high pressure builds over Scotland. Clear night skies allow for chilly mornings with ground frosts, some valley mist particularly in Scotland. Mostly sunny, though locally a little cloud lingering on some high slopes; an easterly breeze will keep the skies a touch cloudier in England and Wales, chance a little rain for England on Sunday with building cloud, though detail currently uncertain. The following week starts with some rain and wind in Wales, more settled to the north but with strengthening wind and building cloud as well. Forecast confidence is low into the week: a general trend towards unsettled conditions is indicated, soonest in the southeast. Scotland may stay largely dry into mid-week, northernmost areas clearest of cloud.