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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Reading Wire weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Ben Lomond’s weather is famously changeable, with conditions shifting from calm to blustery within an hour. The live forecast above gives your best window for a summit attempt, but always expect clouds and a cool wind, even in summer.
What’s the typical weather on Ben Lomond?
You’re looking at a mountain that creates its own microclimate. Even when Glasgow enjoys a mild, dry day, the summit of Ben Lomond can be 5–8°C colder, with sudden mist and stronger gusts. Rainfall is frequent year-round, though April to September offers longer daylight and slightly more stable conditions. Winter brings snow and ice on the high path, so crampons and an ice axe become essential from November to March.
How should I prepare for a climb?
Pack layers, waterproofs and sturdy boots whatever the live forecast says. The main route from Rowardennan is well marked but can become slippery after rain. Check the Met Office mountain weather forecast for detailed summit wind speeds and visibility before setting off. Mobile reception is patchy above the tree line, so download your route map in advance.
Can I climb Ben Lomond in winter?
Yes, but it’s a serious undertaking. Snow and ice can linger until May. You’ll need winter boots, crampons and an ice axe, plus experience navigating in poor visibility. Check the live forecast above and the Met Office’s mountain-specific warnings.
What’s the best time of day to start?
Start by 8am or earlier in summer to avoid afternoon thunderstorms. In winter, aim for a 7am start to allow enough daylight for the six-hour round trip. The live forecast above shows sunrise and sunset times for your chosen day.
Is the path easy to follow?
The main tourist path from Rowardennan is clear and well-trodden, but mist can reduce visibility to just a few metres. Use a compass and map, and don’t rely solely on your phone. The live forecast above will indicate cloud cover at the summit.
For more detailed planning, see our Glasgow Weather page or the 10 Day Weather Forecast UK for the wider region. Our UK weather hub has guides for other Scottish hills too.