Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Monday'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.
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.
Hazy, some fog banks
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Distant views reduced by haze, locally foggy for a time in valleys and some hill slopes.
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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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.
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.
Hazy, some fog banks
Distant views reduced by haze, locally foggy for a time in valleys and some hill slopes.
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 6th July 2026
Last updated
Sun 5th Jul 26 at
4:00PM
Summary for all mountain areas
Windy and generally wet across Scottish hills, rain and drizzle most persistent in northwestern Highlands. Breezy, damp and drizzly too for northern England. Drier and lighter winds for Wales. Poor visibility with low cloud cloaking many hills through the day, best of any breaks toward east.
Headline for Eryri / Snowdonia National Park
Breezy, gusty in places. Low cloud on hills, some improvement.
How windy? (On the summits)
Westerly 25mph, some variability and gusty 30mph in places over tops; a slight easing trend with time 20-25mph, but speeds rise a little into evening.
Effect of the wind on you?
Locally fairly small, but ease of walking becoming impacted on high exposed terrain, some buffeting gusts.
How Wet?
Little rain expected
Some fine drizzle in the air over high terrain where in cloud in the early hours, a small risk of a few spots of light rain, but soon entirely dry.
Cloud on the hills?
Lifting to upper slopes, tops sometimes exposed
Fairly extensive upper terrain with banks to at least middle slopes, patches to lower west slopes; high summits near the top of the cloud layer. Lifting trend with time to largely 800m and above, breaks increasingly forming.
Chance of cloud free summits?
30% rising to 60%
Sunshine and air clarity?
Increasingly sunny on lower slopes by mid-late morning, but weakened by thin high cloud. Misty start in west, improving to very good visibility out of cloud.
How Cold? (at 900m)
11C rising to 13 to 15C, warmest east of high terrain.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 7th July 2026
Last updated
Sun 5th Jul 26 at
4:00PM
How windy? (On the summits)
West-northwesterly 15-25mph, strongest wind early and quite gusty (not just high terrain); northwesterly trend.
Effect of the wind on you?
Ease of walking affected in the morning, some buffeting gusts affecting stability, sometimes fairly small.
How Wet?
Likely dry
Small chance of some light drizzly rain drifting along northernmost slopes, but likely entirely dry.
Cloud on the hills?
Lifting and mostly breaking
A fairly extensive bank on upper slopes in the morning; highest tops may be at or above the cloud later. A lifting trend and much cloud breaking up, though banks will cling to high western slopes for periods.
Chance of cloud free summits?
70% (summits perhaps above cloud early)
Sunshine and air clarity?
Sun increasingly breaking out widely; high tops may be in sun above cloud most of the day. Very good visibility.
How Cold? (at 900m)
11 or 12C, rising to 14C, or slightly higher towards mid-Wales; little or no change with added height.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 8th July 2026
Last updated
Sun 5th Jul 26 at
4:00PM
How windy? (On the summits)
Southwesterly 15 to 20mph.
Effect of the wind on you?
Fairly small.
How Wet?
No rain expected
Cloud on the hills?
Very little, some west coast fog
Some cloud banks on hill slopes mainly western areas in the morning, higher terrain more likely clear. All dispersing, but possible low-level coastal fog near Llyn Peninsula for periods.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Sunshine and thin fair-weather cloud. Visibility very good.
How Cold? (at 900m)
14C rising to 17C afternoon.
Freezing Level
Above the summits.
Planning Outlook
A damp start westerly pattern continues at the start of the week, particularly in Scotland, then a drier and warmer window builds into the middle of the week: very warm in England and Wales, spells of sunshine spread northward, and lighter wind. Some patchy rain continues through late week in western Scotland though detail is uncertain and more often dry. High pressure is indicated to expand across Scotland through next weekend bringing more widely dry and warm conditions in the extended outlook into mid July - easterly winds likely develop, particularly England and Wales; a chance of some thunderstorms.