Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Sunday'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.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Clear
Excellent or superb visibility, no navigation issues.
Warm
Comfortable temperatures on the hills, 10 to 15C on tops, feeling pleasantly warm especially on lower ground. Beware of feeling cooler if exposed to wind on higher terrain.
Click an icon for more information or click here for a key to all icons.
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Clear
Excellent or superb visibility, no navigation issues.
Warm
Comfortable temperatures on the hills, 10 to 15C on tops, feeling pleasantly warm especially on lower ground. Beware of feeling cooler if exposed to wind on higher terrain.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 19th July 2026
Last updated
Sat 18th Jul 26 at
4:24PM
Summary for all mountain areas
Some patchy mist here and there at dawn, but the hills largely clear with a mix of sun and high cloud across the country. Mostly warm, milder north Scotland where cloud patches graze highest tops. Late in the day, hill cloud arrives into northwest Scotland with light drizzly rain. Fire risk remains high.
Headline for Eryri / Snowdonia National Park
Warm, mix of sun and fair-weather cloud
How windy? (On the summits)
Northerly 5-15mph, lowest speeds in the morning when light and variable for a few hours.
Effect of the wind on you?
Small.
How Wet?
No rain expected
Cloud on the hills?
Hills clear
Chance some light mist in sheltered areas in the morning, this fading but also some patchy cloud banks lifting to the high tops; plenty of clear spells expected, no cloud expected afternoon.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Often sunny, some thin high cloud and fair weather cloud developing; sunniest to the north. Excellent visibility.
How Cold? (at 900m)
10C rising to 12 or 13C, or less rise on northern slopes. A degree warmer towards Berwyn group.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 20th July 2026
Last updated
Sat 18th Jul 26 at
4:24PM
How windy? (On the summits)
Northerly 5-15mph; both speed and direction variable.
Effect of the wind on you?
Mostly small.
How Wet?
No rain expected
Cloud on the hills?
Early mist, some banks on high tops
Some early patchy mist in valleys, this soon fading but variable cloud banks form on higher terrain; clearest hills towards Moel Siabod. With time, banks isolate to high summits with breaks.
Chance of cloud free summits?
Rising to 70%
Sunshine and air clarity?
Often sunny, some fair weather cloud building. Very good visibility.
How Cold? (at 900m)
11C rising to 14C; may only rise a degree or two north and west Eryri/Snowdonia NP.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 21st July 2026
Last updated
Sat 18th Jul 26 at
4:24PM
How windy? (On the summits)
Northwesterly 5 to 15mph, increasing a little during day, may reach 20-25mph high tops toward evening.
Effect of the wind on you?
Small most of the day, becoming breezier over hills later.
How Wet?
Largely dry
Chance of an odd brief patch of drizzle northern hills.
Cloud on the hills?
Mostly north in morning
Patchy cloud banks grazing higher tops mainly in the Snowdon/Yr Wyddfa group for periods in the morning, tending to lift above tops often in afternoon.
Chance of cloud free summits?
50% rising to 80%
Sunshine and air clarity?
Patchwork of cloud and sun, sunshine best near coast in afternoon. Visibility very good.
How Cold? (at 900m)
12C, small change northwestern areas, may reach 15C toward mid-Wales tops.
Freezing Level
Above the summits.
Planning Outlook
Weather remains settled through next week as high pressure persists west of Ireland. Northwesterly flow keep temperatures nearer to average for the time of year, dawn temperatures in the middle single digits in Scotland; staying warm in England and Wales but maximum summit temperatures only to the high teens. Cloud and drizzle starts to affect northwest Scotland more often, occasionally drifting further south, chance of an area of patchy rain slipping south through the country on Wednesday, though totals likely small. Despite this, ground remains very dry with high fire risk, with active wildfires limiting access in places. An unsettling trend is indicated next following weekend, bringing wind and rain first to Scotland and increasingly widely. England and Wales may remain quite warm.