Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Saturday's Forecast
Gale force, walking arduous
Considerable buffeting, walking into the wind will be strenuous on exposed terrain, stronger gusts may knock you off your feet. 40 to 55mph.
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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Gale force, walking arduous
Considerable buffeting, walking into the wind will be strenuous on exposed terrain, stronger gusts may knock you off your feet. 40 to 55mph.
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
Saturday 27th June 2026
Last updated
Fri 26th Jun 26 at
4:29PM
Summary for all mountain areas
Widely windy, afternoon gales across Scotland, possibly Lakeland and Snowdonia too. In Scotland, drizzle gives way to showery rain, setting in late in the day over western hills. Patchy rain England and Wales with dry windows and warm sunny moments, but a rising risk of showery bursts through afternoon, locally heavy.
Headline for Eryri / Snowdonia National Park
Risk afternoon gales; often dry, risk afternoon showers
How windy? (On the summits)
South-southwesterly 25-35mph, speeds always strongest west where likely to strengthen, sustained speeds up to 45mph for several afternoon hours and stronger gusts over highest tops.
Effect of the wind on you?
Expect strenuous walking conditions, more challenging over high terrain and western hills with buffeting gusts knocking you off balance. Feeling chilly.
How Wet?
Some patchy rain, risk heavier showers
Some drizzle on high tops in cloud early. Patchy rain drifting from the southwest from time to time, an odd heavier burst possible, then a rising risk of extended and heavier falls in the later afternoon, particularly west.
Cloud on the hills?
Varied, mostly west and where rain occurs
Varied cloud banks, most frequent over west coastal slopes, fairly extensive to middle slopes early. Some patches lower down inland in morning. A lifting and breaking tendency, a few afternoon hours of banks just above 700-800m, or perhaps largely clear. Filling in over high tops should rain return, patchy lower banks.
Chance of cloud free summits?
Rising to 50%
Sunshine and air clarity?
Mixed cloud and sun, likely an extended sunny period afternoon, best chance east-Wales. Some mistiness in morning. Visibility often good, but turning poor should rain occur.
How Cold? (at 900m)
13 to 15C, small variation all day. Still rather humid. Feeling like 5C in direct wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 28th June 2026
Last updated
Fri 26th Jun 26 at
4:29PM
How windy? (On the summits)
West-southwesterly 20-25mph, sometimes gusting 30mph over tops, later sustained 30mph and trending westerly.
Effect of the wind on you?
Fairly small, but gust impact ease of walking, perhaps more consistently impeded later in the day.
How Wet?
Morning rain, substantially dry afternoon
From before dawn, several bands of rain pass west-to-east, brief heavier falls likely in the morning. From midday onward, largely dry, some risk of light spots of rain drifting onto western hills.
Cloud on the hills?
Lifting and breaking trend afternoon
Fairly extensive through much of morning, to most middle slopes, or lower western slopes with ragged lower patches in the early morning. From noon, a rising and breaking trend, to banks above 800m with increasing breaks.
Chance of cloud free summits?
20%, rising afternoon to 60%
Sunshine and air clarity?
Mostly cloudy morning breaking into a patchwork of cloud and sun afternoon. Visibility becoming very good.
How Cold? (at 900m)
10 or 11C, cooling later afternoon to 9C.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 29th June 2026
Last updated
Fri 26th Jun 26 at
4:29PM
How windy? (On the summits)
Westerly trending southwesterly 10-15mph, stronger early, sustained 20mph around dawn.
Effect of the wind on you?
Mostly small, some breezy moments early in exposure.
How Wet?
Patchy rain, afternoon showers, drier east
Light patchy rain drifts onto west slopes from dawn, mostly light with dry windows, more frequent on higher west aspects. Some risk of showery bursts forming afternoon. Very little rain reaches east hills.
Cloud on the hills?
Lifting to high terrain with breaks
Banks of cloud at multiple elevations at dawn, most extensive west aspects where banks may reach lower slopes. Lifting through morning, to largely just banks over tops afternoon, and breaks probable; briefly lower again if showers occur.
Chance of cloud free summits?
40% rising to 70%
Sunshine and air clarity?
A patchwork of cloud and sunshine, some variable thin high cloud around. Very good visibility.
How Cold? (at 900m)
9C rising to 12C.
Freezing Level
Above the summits.
Planning Outlook
Cooler on Sunday as the weather pattern returns to an Atlantic influence. Bands of rain sweep eastward early Sunday, followed by fresher, sunnier weather with some patchy showers in the north and west. This westerly Atlantic pattern dominates next week: high pressure south and low pressure north will bring alternating periods of rain punctuated by bright sunshine. Wind generally on the strong side with mild to sometimes warm temperatures, though cooler and windier spells at times produce significant wind chill on Scottish tops. Day-to-day detail currently uncertain, but western hill groups from Lakeland northward will see the most cloud and patchy rain, while east and southern areas likely drier and sunnier. This pattern is indicated to continue into the following weekend.