Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Friday'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.
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.
Hazy, some fog banks
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Distant views reduced by haze, locally foggy for a time in valleys and some hill slopes.
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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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.
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.
Hazy, some fog banks
Distant views reduced by haze, locally foggy for a time in valleys and some hill slopes.
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
Friday 6th November 2026
Last updated
Thu 5th Nov 26 at
12:03PM
Summary for all mountain areas
Fairly light wind and scattered patches of light rain, amounting to little in total. Cloud base will vary, extensive on higher mountains, but lower down some slopes cloud free, whilst sometimes adjacent slopes remain foggy (or even between cloud layers) - with changes occurring only slowly.
Headline for Eryri / Snowdonia National Park
Light wind. Extensive fog higher areas.
How windy? (On the summits)
Easterly, 15mph or in morning perhaps 20mph some higher areas Snowdon range. Will tend to ease through day.
Effect of the wind on you?
Small
How Wet?
Occasional rain - mainly mid Wales.
Most possibly all areas dry particularly summits closest to the west coast. But damp weather with pockets of very light rain will come and go and for a few hours the rain may be steady in parts of mid Wales.
Cloud on the hills?
Extensive, particularly more eastern hills
Broadly, cloud base will rise slowly through the day, base typically 600 or 700m. However, areas of fog will 'hang' on lower slopes (above 300-450m), particularly those in east Wales, most or all day, whilst others clear.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Occasional sunshine, mainly west Wales. Hazy and misty in rain.
How Cold? (at 900m)
3C
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 7th November 2026
Last updated
Thu 5th Nov 26 at
12:03PM
How windy? (On the summits)
Direction varied 10mph or less.
Effect of the wind on you?
Negligible
How Wet?
Patches of drizzly rain
Total rainfall small; nevertheless, particularly east Wales, drizzly rain may fall for an hour or two.
Cloud on the hills?
Extensive fog.
Low cloud will affect much of region above 200-400m, although westwards the cloud base will tend to be above 450 and higher areas may sometimes be between cloud layers.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Cloudy or dull and extensively misty or foggy east Wales. A little sun here and there but still hazy west Wales.
How Cold? (at 900m)
4C
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 8th November 2026
Last updated
Thu 5th Nov 26 at
12:03PM
How windy? (On the summits)
Direction varied 10mph or less.
Effect of the wind on you?
Negligible
How Wet?
Risk of a little drizzle, total rainfall small
Little change with a few further pockets of light or very light drizzle.
Cloud on the hills?
Extensive; cloud base sometimes very different on nearby slopes
Detail uncertain: Cloud extensive highest slopes. Lower down, fog clinging to many slopes from valleys up most or all day, whilst others are or become fog free or are between layers of cloud.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Cloudy or dull with extensive fog - possibly brighter with glimpses of sun developing through day.
How Cold? (at 900m)
4C
Freezing Level
Above the summits.
Planning Outlook
High pressure will continue to be the main influence into next week, particularly W & NW Highlands where extensively dry and wind often light. However, disappointing for other areas as 'gloomy' conditions predominate" patches of light rain and extensive low cloud and fog. Into next week, an area of low pressure will bring rain and wind in from the southwest but northern Scotland may escape most or all the rain.