Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Monday'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.
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.
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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.
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
Monday 20th July 2026
Last updated
Sun 19th Jul 26 at
4:00PM
Summary for all mountain areas
Some patchy drizzle and low cloud covering many northern mountains in the Highlands in the morning. Cloud persists on hills toward northwest coasts, tending to lift and break further inland. Hills in England & Wales mostly clear. Wind fairly light overall. Very dry ground and high fire risk remains.
Headline for Eryri / Snowdonia National Park
Light wind. Dry, sun and fair-weather cloud, hills clearing.
How windy? (On the summits)
North to northwesterly 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 and southward. With time, patches thin up to high summits and largely clearing.
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 inland, only rising a degree or so north and west Eryri/Snowdonia NP.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 21st July 2026
Last updated
Sun 19th Jul 26 at
4:00PM
How windy? (On the summits)
Northwesterly 5 to 15mph, increasing a little during day, reaching 20-25mph high tops during evening and into night.
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 in the morning.
Cloud on the hills?
Mostly north in morning, clearing
Patchy cloud banks grazing higher tops mainly in the Snowdon/Yr Wyddfa group for periods in the morning. Lifting to be well broken above tops into afternoon.
Chance of cloud free summits?
50% rising to 90% afternoon
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, rising to 15C toward mid-Wales tops.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 22nd July 2026
Last updated
Sun 19th Jul 26 at
4:00PM
How windy? (On the summits)
North to northwesterly 15 to 25mph, some gusts 30mph higher tops in northern areas.
Effect of the wind on you?
Feeling breezy and quite cool over higher terrain, starting to affect ease of walking and balance on exposed high ridges.
How Wet?
Damp start toward north
Drizzle and a little light rain possible over northern hills in the morning, largely fading into middle of day, but an odd light shower possible inland in the afternoon.
Cloud on the hills?
Early low cloud lifting and clearing
Cloud banks early morning most widely over northern hills, possibly to 500-600m for a time, 700m and more broken further south; highest tops may be near top of cloud sheet. Rising to 800-900m then increasingly breaking during day.
Chance of cloud free summits?
50% rising to 90%
Sunshine and air clarity?
Fairly cloudy, some sun breaking through, best mid-Wales. Visibility reduced around early dampness, then very good below cloud.
How Cold? (at 900m)
10C rising to 13C. Feeling like 3 to 5C directly in the wind on high tops.
Freezing Level
Above the summits.
Planning Outlook
Largely dry weather prevails as high pressure remains nearby to the west. A northwesterly flow keeps 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 affects northwest Scotland more often, occasionally drifting further south. Despite this, ground remains very dry with high fire risk, with ongoing wildfire management limiting access in places. A more unsettled trend develops during next weekend, bringing wind, rain and showers first to Scotland and increasingly widely. England and Wales remain quite warm.