Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Saturday's Forecast
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Clear
Excellent or superb visibility, no navigation issues.
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.
Click an icon for more information or click here for a key to all icons.
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Clear
Excellent or superb visibility, no navigation issues.
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
Saturday 3rd October 2026
Last updated
Fri 2nd Oct 26 at
2:11PM
Summary for all mountain areas
Fine, sunny with light wind mountains in England and Wales. Much of Scotland will be dry but showers, mainly W & NW Highlands, where there will be persistent fog. Progressively windier northwards; near gale force northern Scotland.
Headline for Eryri / Snowdonia National Park
Light wind; extensive sunshine.
How windy? (On the summits)
Westerly 15mph dropping gradually to 5 to 10mph.
Effect of the wind on you?
Mostly negligible.
How Wet?
Rain not expected
Cloud on the hills?
Little if any
Fragments may shroud some higher slopes after dawn, but all hills clearing.
Chance of cloud free summits?
Almost certain by late morning
Sunshine and air clarity?
Sunny with visibility excellent or superb.
How Cold? (at 900m)
7 to well inland in afternoon 10C.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 4th October 2026
Last updated
Fri 2nd Oct 26 at
2:11PM
How windy? (On the summits)
Southwesterly, 15 to 20mph.
Effect of the wind on you?
Small.
How Wet?
Extensively or completely dry.
Risk fine drizzle occasionally, more or less confined to slopes nearest the west coast.
Cloud on the hills?
Fog western mountains
Persistent low cloud penetrating slowly inland from about dawn. Likely shroud western hills most or all day - perhaps temporarily higher tops above the cloud. As it spreads inland, the cloud may break up before reaching hills north from Berwyn mountains.
Chance of cloud free summits?
10% west to 80% east
Sunshine and air clarity?
Sunshine mainly easternmost areas where it may be extensive. Mostly dull western hills. Mostly very good or excellent visibility
How Cold? (at 900m)
10C.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 5th October 2026
Last updated
Fri 2nd Oct 26 at
2:11PM
How windy? (On the summits)
Southwesterly typically 20mph, but where exposed on higher summits Snowdon range, perhaps 30mph.
Effect of the wind on you?
Mostly fairly small, but balance sometimes tricky in sudden gusts, mainly Snowdon range.
How Wet?
Substantially dry: risk isolated drizzle W.
Risk a little drizzle some westernmost slopes. Otherwise dry.
Cloud on the hills?
Fog probable higher western areas
Confidence low: Blanket of low cloud may continue to drift in off the sea to the west, shrouding even lower nearby hills in fog - possibly most or all day. But well inland, the cloud may well break up completely, and the clearance extend back toward the coast.
Chance of cloud free summits?
30%
Sunshine and air clarity?
There may be extensive sun and excellent visibility east Wales. This may extend back toward the dull and misty coastal areas.
How Cold? (at 900m)
11C.
Freezing Level
Above the summits.
Planning Outlook
Rain at some stage more or less daily on most mountain areas through the coming week. However, total rainfall small, and frequently dry E & S Wales and S Pennines. Frequently windy Scottish Highlands, whilst progressively southwards, periods of strong winds will less frequent. A brief period of colder weather around the middle of next week will bring snowfall to some northern mountains.