The Northwest Highlands Forecast

Areas north from Knoydart in the west, and the Great Glen towards the east (NB. Does not include Mull and areas west of Loch Linnhe, these are found in the West Highlands forecast.)

Viewing Weather Forecast for Monday 22nd October 2018
Forecast last updated on Sunday 21st October 2018 at 4:15pm

Today | Tuesday | Wednesday

Summary for all mountain areas

Westerly gales across the Highlands all day, becoming storm force. Rain (initially snow on tops), will rarely cease on western coastal hills in NW Scotland. Low cloud filling in across the W/NW Highlands. Otherwise largely dry. Least wind Wales, but increasing N England.

Headline for The Northwest Highlands

Upland gales becoming storm force. Persistent rain west.

How windy? (On the Munros)

Westerly 40 to 50mph morning, strengthening to 55 to 70mph by midday onward. Least wind on and near Skye, strongest Sutherland.

Effect of wind on you?

Walking becoming very difficult across the hills; general mobility will become difficult where exposed. Severe wind chill.

How Wet? (Precipitation and its impact)

Frequent rain, mostly near west coast

Rain most of the day within a few miles of the west coast, concentrated Sutherland. Progressively inland, the rain lighter and more intermittent. Very little rain at all Ben Wyvis and summits near the Great Glen. In morning, temporarily snow highest tops.

Cloud on the hills?

Deteriorating; fog filling in most hills

Some mountains starting free of low cloud. Will deteriorate, most markedly near the coast where fog will become persistent above 400 to 600m. Progressively inland, cloud base higher, even in afternoon, only patches easternmost areas below 700m, but extensive above 900m.

Chance of cloud free Munros?

20% west; 60% east.

Air clarity (below cloud)

Pockets of sun eastern valleys. Increasingly hazy.

How Cold? (at 900m)

1C rising slowly to 4C

Freezing Level

1000m after dawn; lifting above all summits by early or mid afternoon. Slight frost at dawn some inland valleys.

Planning Outlook

All mountain areas of Britain from Tuesday 23rd October 2018

A strong area of high pressure lies west of the British Isles early this week. A prevailing west to northwesterly flow, with prolonged gales over Scottish mountains. Rain frequent or persistent NW Scotland, but largely dry elsewhere. Later in the week, a switch to northerly winds will bring widely much colder air across the UK. Dropping below freezing point on the Munros, and highest tops in England & Wales by Friday and the weekend. Expect upland gales and severe wind chill. Showers focused on north-facing hills will give a covering of snow on the hills. Away from showers, the air will be very clear.

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