Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Tuesday'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.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra 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.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 6th October 2026
Last updated
Mon 5th Oct 26 at
3:40PM
Summary for all mountain areas
Chilly in Scotland, blustery showers northwest with hail, snow on summits. Showers well-scattered elsewhere, regular sun breaks. Patchy rain, drizzle, and low cloud affect England and Wales most of the day; some areas of east Wales see windows of cloud breaks and good visibility.
Headline for Eryri / Snowdonia National Park
Drizzle and fog, some patchy rain, trending more frequent
How windy? (On the summits)
Westerly 20-25mph, trending lighter and shifting northwesterly, around 15mph and sometimes less afternoon.
Effect of the wind on you?
Fairly small.
How Wet?
Rain from time to time, mainly western hills
Rain and drizzle on and off, mostly west Wales. Total rainfall mostly fairly small, but a few heavier showery moments are possible too.
Cloud on the hills?
Fairly extensive
Fog across hills above 300 to 450m western hills much of the day, may temporarily drop below 200m coastal slopes during notable falls. Breaks to 600m east Wales, and some chance of a few more broad breaks just in the early hours to the east of high terrain.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Some sunny glimpses in the east to start the day, becoming overcast, largely dull and misty on high tops and west slopes where visibility will be poor. Good visibility to the east during dry windows.
How Cold? (at 900m)
9 or 10C; may drop a few degrees late in day Snowdon range.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 7th October 2026
Last updated
Mon 5th Oct 26 at
3:40PM
How windy? (On the summits)
Northwesterly 20-30mph, but perhaps rising slightly later in the day.
Effect of the wind on you?
Will impact ease of walking and balance challenged at times, may deteriorate slightly. Considerable wind chill.
How Wet?
Early rain followed by hail showers
Confidence low: Overnight rain will clear, possibly only slowly through morning from east Wales. A brief dry windows but showers then follow from the north, trending more frequent, risk hail.
Cloud on the hills?
Fairly extensive on higher areas
Cloud likely to shroud the mountains widely in rain, but as it clears to showers, cloud base rises to 750 to 900m, but dropping to 400 to 600m near showers. Generally lowest cloud base will be on Snowdon range.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Patches of sun will extend east - most sun mid Wales. Visibility sometimes poor, but otherwise good, although a haze.
How Cold? (at 900m)
4C; will feel as cold as minus 7C directly in winds.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Thursday 8th October 2026
Last updated
Mon 5th Oct 26 at
3:40PM
How windy? (On the summits)
Northwesterly 30mph to start, lessening and shifting westerly, then significantly strengthening evening into night.
Effect of the wind on you?
Blustery in exposure to start, becoming fairly small, then deteriorating overnight.
How Wet?
Showers ease, rain later
From dawn, showers push onto most hills from the north, tending to lessen to become substantially dry. Later, rain returns from the west, patchy at first but increasingly frequent evening into night.
Cloud on the hills?
Often covering tops, some breaks
Cloud banks will cling to the high tops much of the day, lower bases towards the north and west early during showers, locally towards 600-700m. Cloud largely isolates to tops, a few breaks forming, but then returning extensively evening into night.
Chance of cloud free summits?
Rising to 50%
Sunshine and air clarity?
Patchy sun, mostly sunny mid-Wales to start, high cloud increasingly thickening. Very good visibility.
How Cold? (at 900m)
3C, rising slightly, then a sharp rise into night to 10C or above.
Freezing Level
Above the summits.
Planning Outlook
A brief colder period with the wind easing on Wednesday and Thursday with bright sun breaking out - some snow showers will affect high terrain in Scotland, some hail mixed in as well. Westerly wind returns as Thursday goes, bringing bands of rain, low cloud and strong upland winds across Britain. Saturday remains blustery and showery but with bright breaks forming, and then Sunday sees a more settled day as a small area of high pressure builds in from the south. The following week looked mixed with bands of rain coming and going, punctuated by regions of high pressure, but typically on the cloudy side. Generally mild temperatures.