Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Wednesday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
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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Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
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
Wednesday 29th July 2026
Last updated
Tue 28th Jul 26 at
4:15PM
Summary for all mountain areas
A swathe of frequent to persistent rain through central & southern Scotland, some heavier bursts with possible thunder and lightning afternoon. Patchier showers in northwest, rather cool here. Warmer and humid southwards, low cloud covering many western hills, some drizzle near Irish Sea.
Headline for Eryri / Snowdonia National Park
Breezy. Damp low cloud coastal hills, local showers.
How windy? (On the summits)
South to southwesterly 20 to 30mph, gusty in places over higher terrain.
Effect of the wind on you?
Blustery over the hills, affecting comfortable walking at times on higher exposed tops and ridges.
How Wet?
Local drizzle, chance a late shower
Some drizzle around low cloud on hills near Cardigan Bay. Chance of an isolated showery burst of rain inland later in day. A band of rain moves in from west into night, risk thunder.
Cloud on the hills?
Most widely early in day, persistent low cloud west coast hills
Cloud banks to lower elevations on coastal hills in west, tending to thin but likely to linger around some western slopes all day. Further north and east, patchier cloud, more often clearing afternoon.
Chance of cloud free summits?
20% west coast, rising to 70% north/east.
Sunshine and air clarity?
Largely cloudy and misty in west, may improve at little. Sun and varied high cloud further east, visibility very good.
How Cold? (at 900m)
12C rising to 15C where not in cloud, or 17C mid-Wales. Some valleys reach 25C or above toward east; quite humid.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Thursday 30th July 2026
Last updated
Tue 28th Jul 26 at
4:15PM
How windy? (On the summits)
Westerly 20 to 25mph, at times 30mph higher northern tops.
Effect of the wind on you?
Affecting ease of walking and balance on exposed high tops and ridges. Marked wind chill.
How Wet?
Early showers clear
A band of showery rain around dawn, may leave scattered showers into morning, but soon clearing east to be largely dry. Light showers possible by dusk in west.
Cloud on the hills?
Early patches lifting and clearing
Patchy cloud banks over mountains, most in western areas early morning, bases soon rise and break above tops, largely clear middle of day onward. Patches may return in west by evening.
Chance of cloud free summits?
80%
Sunshine and air clarity?
Fairly cloudy start, then sun breaking through, increasingly sunny afternoon. Visibility very good.
How Cold? (at 900m)
7 to 9C. Feeling near 0C in exposure to wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Friday 31st July 2026
Last updated
Tue 28th Jul 26 at
4:15PM
How windy? (On the summits)
West to southwesterly 15 to 25mph, strongest northern tops, at times 30mph.
Effect of the wind on you?
Starting to affect comfortable walking at times on higher tops and ridges. Noticeable wind chill.
How Wet?
Brief local showers
One or two showers passing west to east.
Cloud on the hills?
Capping tops in morning, lifting
Patchy cloud soon mostly above 700m early morning, lifting toward higher tops, may come and go for a few hours, but increasingly clearing into afternoon.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Patchwork of cloud and sun; coastal areas sunnier afternoon onward. Visibility very good.
How Cold? (at 900m)
7C rising to 9 or 10C afternoon. Feeling nearer 0C in the wind on tops.
Freezing Level
Above the summits.
Planning Outlook
Cool and showery westerlies late this week and into Saturday, windy over high terrain; western hills often capped in cloud. Rain may encroach from the southwest on Sunday, winds turn southerly and warmer air wafts back across England and Wales at least. A complex area of low pressure is then expected to circulate slowly over Britain early next week, bringing areas of rain and heavy showers, some thundery downpours possible. Winds varying, may strengthen northwesterly by Tuesday to gales. An improving trend into midweek, but showery westerlies likely prevail in Scotland at least. Despite spells of rain, beware ongoing fire management restricting access to some mountains.