Cairngorms NP and Monadhliath

Cairngorms National Park and Monadhliath. Also includes the Ben Alder area hills between Loch Ericht and Loch Laggan.

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Viewing Forecast For

Cairngorms NP and Monadhliath
Tuesday 22nd September 2020
Last updated Monday 21st September 2020 at 4:09 PM

Summary for all mountain areas

Gales or severe gales across Scottish mountains. Upland gales also extending to northern England, plus Snowdonia for a time. Low cloud and patchy rain many hills, becoming more persistent. Heavier rain sets in across W/NW Scotland, most widely afternoon.

Headline for Cairngorms NP and Monadhliath

Mountain gales becoming severe. Occasional rain.

How windy? (On the Munros)

South to southwesterly, strengthening to 50 to 60mph by late morning, gusts over 70-80mph higher tops.

Effect of the wind on you?

Soon widely difficult walking where exposed across the hills. Severe wind chill.

How Wet?

Rain mostly south, later more widespread from west.

Many hills north of Cairngorms often dry. Occasional rain mainly west of A9 and southern Cairngorms NP. Toward evening from the west, the rain will become persistent and gradually extend across Cairngorms NP. Finishing as snow high tops after dark.

Cloud on the hills?

Extensive or becoming extensive

Cloud will shroud higher areas most or all day, above 750 to 1000m, lowest base summits accessible north of Glen Garry and Ben Alder. Some higher breaks north of the Cairngorms toward the Lecht. In rain, the cloud base will lower a further 100 or 200m.

Chance of cloud free Munros?

20% south/west near A9, to 40% NE Cairngorms.

Sunshine and air clarity?

Pockets of weak sun mainly lower areas Cairngorms NP. Visibility sometimes very good but generally hazy and poor in rain.

How Cold? (at 900m)

7C; dropping abruptly to 2C soon after dusk.

Freezing Level

Above the summits most, or perhaps all day. However, anticipate abrupt drop to 1150m from dusk.

Viewing Forecast For

Cairngorms NP and Monadhliath
Wednesday 23rd September 2020
Last updated Monday 21st September 2020 at 4:09 PM

How windy? (On the Munros)

Direction may vary considerably, rarely more than 10-15mph, sometimes little wind.

Effect of the wind on you?

Mostly small.

How Wet?

Risk a few showers, hail/snow tops

Much of the day likely dry, but expect a scattering of showers to form and drift around slowly, with snow flurries falling to around 800m, and hail to lower slopes.

Cloud on the hills?

Breaks to higher tops

Patches of cloud above 800-1000m in morning, but breaks forming to many higher slopes through middle of day. Locally around showers, patches will form below 700m.

Chance of cloud free Munros?

60%

Sunshine and air clarity?

Patchwork of sun, the cloud occasionally filling in, particularly afternoon. Visibility mostly excellent, reduced only briefly by local showers.

How Cold? (at 900m)

2C

Freezing Level

Around 1200m.

Viewing Forecast For

Cairngorms NP and Monadhliath
Thursday 24th September 2020
Last updated Monday 21st September 2020 at 4:09 PM

How windy? (On the Munros)

Direction varied, most likely 10mph or less. Small risk easterly 25mph.

Effect of the wind on you?

Likely small.

How Wet?

Mostly dry

Much of the day may well remain dry with just well scattered showers of hail, or sometimes snow on the Munros.

Cloud on the hills?

Very little

Patches mostly confined to higher slopes. Many tops often free of cloud.

Chance of cloud free Munros?

80%

Sunshine and air clarity?

Sunshine and well broken cloud. Visibility excellent.

How Cold? (at 900m)

2 or 3C.

Freezing Level

1200m or just above.

Planning Outlook

Varied conditions beyond midweek as complex lows pivot eastwards across Britain. Most rain may well be focused across England, Wales & southern Scotland, with only well scattered showers for much of the Scottish Highlands - excellent visibility and good cloud breaks. Some marked lulls in wind, but for periods up to gale force - northerly by Friday. Generally chilly up to Saturday with higher mountains near or just below freezing point, and overnight frost in some valleys. Over the weekend, westerly winds are expected to return, with rain, low cloud and less cold temperatures.