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.
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.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
Chilly
Air temperature typically 0 to 5C on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate layers.
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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.
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.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
Chilly
Air temperature typically 0 to 5C on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate layers.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 28th October 2026
Last updated
Tue 27th Oct 26 at
12:12PM
Summary for all mountain areas
Still windy - though less so than on Tuesday. Generally showery, although over N England at first, and occasionally through the morning in Scotland, the rain frequent. Higher mountains extensively foggy.
Headline for Eryri / Snowdonia National Park
Upland wind near gale on highest tops; showery at first.
How windy? (On the summits)
Westerly 30 to 35mph at dawn; slowly easing to 25mph through daylight.
Effect of the wind on you?
Strenuous walking from dawn, balance a challenge where exposed with considerable wind chill; effects slowly lessening.
How Wet?
One or two showers
After dawn, bursts of drizzly rain for perhaps an hour or so, particularly Snowdon range. Then improving, only here and there a shower.
Cloud on the hills?
Mountains persistently foggy
Cloud will shroud the mountains all day, at times in rain below 300m near the coast and 550m east Wales. Some improvement afternoon when the cloud base will range between 450 and 750m, still highest eastern areas.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Sun increasingly breaking through after a dull misty start, particularly east Wales. Hazy, best visibility east Wales.
How Cold? (at 900m)
7C - rising marginally through daylight. Will feel as cold as minus 3C where exposed.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Thursday 29th October 2026
Last updated
Tue 27th Oct 26 at
12:12PM
How windy? (On the summits)
Southerly 25 or 30mph, possibly 35mph higher western summits.
Effect of the wind on you?
Likely to impede ease of walking on higher areas and give marked wind chill.
How Wet?
Risk fine drizzle in cloud.
Largely or completely dry, but perhaps fine drizzle in fog.
Cloud on the hills?
Extensive, in places from valleys up.
Morning: Extensive fog from some valleys up and widely below 300m - although some higher areas may be or become cloud free, particularly Snowdon area. Afternoon: Most summits probably clearing at least temporarily.
Chance of cloud free summits?
20% rising to 60%
Sunshine and air clarity?
Morning: areas where dull and misty or foggy, but the sun may well come through west Wales. Afternoon: Some sun most areas, but remaining hazy. Cloudiest E Wales.
How Cold? (at 900m)
6C.
Freezing Level
Above the summits
Viewing Forecast For
Eryri / Snowdonia National Park
Friday 30th October 2026
Last updated
Tue 27th Oct 26 at
12:12PM
How windy? (On the summits)
Southerly 25 to perhaps 30mph higher western summits in morning. Will tend to ease to 15mph during day.
Effect of the wind on you?
Becoming small.
How Wet?
Rain unlikely
Extensively or completely dry, although risk fine drizzle where foggy in places in morning.
Cloud on the hills?
May be extensive morning east Wales
Generally cloud base rising to 750m or above - perhaps increasingly clearing higher summits at times. But threat particularly morning east Wales, of much lower cloud, possibly initially from just above valleys up.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Patches of sunshine particularly west Wales. Hazy, patches of fog east Wales morning.
How Cold? (at 900m)
8C
Freezing Level
Above the summits.
Planning Outlook
A hint of a change as pressure builds across Britain from the coming weekend as the present stormy weather gradually subsides. On Friday and into the weekend, a final front could well become almost stationary for a day or so before fizzling out - still uncertainty as to its position (thus its footprint of rain and low cloud) in the otherwise improving picture as it becomes fine with light wind on the hills and overnight frost in lowland and upland valleys.