Look for a stable lid
Warmer air above a colder, moist layer can trap cloud beside the loch and in nearby glens. Drier air above improves the chance of clear high ground.
Loch Lomond, Trossachs & Argyll
Ben Lomond cloud inversion forecast. Next 24 hours.
See the next 24 hours around Ben Lomond, with a close fixed map, the strongest dawn window and the Loch Lomond and Trossachs regional signal.
Local outlook
Ben Lomond over the next 24 hours
Very likely
Likely
Possible
Purple dot: Ben Lomond
Latest regional signal
Unlikely
Best window
No clear viewing window yet
Captured 14 Sep, 03:04 BST · model rating, not a literal probability
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Local inversion guide
When can you see a cloud inversion at Ben Lomond?
The best chance comes when colder, moist air settles on low ground beneath warmer, drier air, winds stay light and the cloud top remains below your viewpoint.
Ben Lomond rises above the eastern shore of Loch Lomond, with water, glens and lower ground on several sides. Fog can pool beside the loch while cloud crossing the Southern Highlands reaches the summit.
Look beyond fog at loch level. A useful inversion needs a cloud top below the mountain, a clear moisture break above it and a wider settled signal around Loch Lomond rather than one isolated patch.
Before you travel: the map shows the wider pattern across Loch Lomond, Trossachs & Argyll, not a promise for one summit. Check the latest wind, visibility and mountain forecast for your exact route.
See the forecast data and limitationsCompare the loch and glens
Balloch, Arrochar and the eastern shore can behave differently. A consistent signal across separated low areas is stronger than fog in one place alone.
Keep cloud below 974 m
Check the forecast cloud top against Ben Lomond's height. A deep maritime layer can cover the summit even when low ground looks promising.
Watch how the wind changes
Light low-level wind helps the pool persist, but a change along the loch can move or deepen cloud quickly. Follow several hours on the timeline.
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Cloud inversion questions for Ben Lomond
Does fog over Loch Lomond guarantee a clear Ben Lomond summit?
No. Fog at loch level is encouraging, but the cloud can deepen up the slopes or separate summit cloud can form. Check the estimated cloud top and full mountain forecast.
Is this signal only for the eastern shore of Loch Lomond?
No. The likelihood is the wider regional model signal for Loch Lomond, the Trossachs and Argyll, supported by nearby captured forecast locations.
Does a Likely signal mean the Ben Lomond route is safe?
No. It is not a route or safety assessment. Check wind, rain, visibility, ice, access and the complete mountain forecast before setting out.
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