Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Sunday'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.
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.
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 5th July 2026
Last updated
Sat 4th Jul 26 at
4:17PM
Summary for all mountain areas
Early sunny bursts in east Scotland, rain and cloud setting in west and spreading widely with time. Extensive cloud and drizzle on English summits, some patchy rain, notably northwest hill groups; south Pennines drier later. Largely dry Wales, sun increasingly breaking out (through high cloud), particularly south.
Headline for Eryri / Snowdonia National Park
Early cloud patches breaking to warm sun
How windy? (On the summits)
Westerly 15-25mph; some variability, gusty over high tops and passes, and generally higher end of the range early and late in the day when gusts approach 35mph.
Effect of the wind on you?
Locally fairly small, but ease of walking becoming impacted on high exposed terrain, occasional buffeting gusts.
How Wet?
Little or no rain
Some fine drizzle in the air over high terrain where in cloud, chance of a few early patches of light rain from the west in the early morning, this all fading for a dry afternoon.
Cloud on the hills?
Lifting to upper slopes, well-broken
Fairly extensive high terrain with banks to at least middle slopes in the morning, patches to lower western slopes. Lifting trend with time to largely 800m and above, some breaks forming too, particularly later. With time, summits may be near the top of any cloud.
Chance of cloud free summits?
Rising to 60%
Sunshine and air clarity?
Increasingly sunny, particularly lower slopes, but weakened by high cloud; sun extensive to the south and east by later afternoon. Very good visibility.
How Cold? (at 900m)
11 or 12C, little or no change with added height. May locally rise a degree east Wales.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 6th July 2026
Last updated
Sat 4th Jul 26 at
4:17PM
How windy? (On the summits)
Westerly 15-25mph, some variability and gusty over tops; a slight easing trend with time.
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 but weakened by high cloud. Very good visibility.
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
Sat 4th Jul 26 at
4:17PM
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.
Planning Outlook
Rain, drizzle and low cloud persist over western hills from Lake District northward into early next week. Temperatures near average, but feeling cool in exposure to wind on tops, quite strong and gusty central and south Scotland. Northeast areas are drier with higher cloud bases but rain reaches here too. Higher pressure south maintains drier conditions in Wales and the south Pennines but cloud and some drizzle will affect high western slopes from time to time; lighter wind here, but nuisance gusts in exposure. A drier and warmer window builds into the middle of next week: very warm in England and Wales, spells of sunshine spread northward, and lighter wind. Some showers and patchy rain continue through late week and next weekend, though detail is uncertain and more often dry.