West Highlands Forecast

Viewing Weather Forecast for Monday 22nd October 2018

Western Highlands accessible from, and south of, Glenfinnan (Road to the Isles) and Glen Spean (includes Creag Meagaidh). This area include Ben Nevis and the mountains around Glencoe. In the east, includes Ben Alder south to Loch Lomond and Trossachs NP. Includes Arran and Mull.

Today | Tuesday | Wednesday

Forecast last updated on Sunday 21st October 2018 at 4:15pm

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 West Highlands

Upland gales becoming storm force north. Rain mostly west.

How windy? (On the Munros)

Westerly 30 to 40mph morning, strengthening to 40 to 65mph by midday onward. Least wind Arran and lower tops near Loch Lomond, strongest Lochaber.

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)

Rain on and off, mainly near coast

Rain soon increasingly frequent onward near/west of Loch Linnhe, becoming persistent, although total rainfall small. Elsewhere, rain now and again by mid-morning onward, but on central highlands, E & S Loch Lomond NP and Arran, little more than a few spots in the wind. In morning, temporarily snow highest tops.

Cloud on the hills?

Deteriorating; fog filling in most hills

Many mountains starting free of low cloud. Will deteriorate, most markedly near the coast where fog will become persistent above 400 to 650m. Progressively inland, cloud base higher, even in afternoon, only patches S/E Loch Lomond NP and central highlands below 700m, but extensive higher tops.

Chance of cloud free Munros?

30% west; 60% well inland.

Sunshine?
Air clarity (below cloud)

Pockets of sun, mainly valleys well inland. 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.