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Live forecasts update automatically; written guidance last reviewed 15 June 2026 by the National Report weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
With the live forecast above showing conditions changing quickly in the valley, check it again before heading up—mountain weather can shift in minutes. Chamonix’s alpine climate means crisp mornings giving way to afternoon cloud or showers, especially in autumn.
What should I expect from Chamonix weather this week?
The live forecast above gives you a reliable snapshot for the valley floor (around 1,000 m). Higher up, at the Aiguille du Midi or Grands Montets, temperatures drop 6–7 °C per 1,000 m and winds strengthen. If you’re hiking or skiing, layer up and keep an eye on the UK 10-day forecast for comparison—mountain weather behaves differently.
How does Chamonix weather change through the year?
Winter (December–February) brings reliable snow above 1,800 m, though valley inversions can keep fog low. Spring (March–May) offers warmer days but afternoon storms. Summer is pleasant for hiking, though July and August see frequent thunder. Autumn is crisp and often quieter, but expect early snowfall by November. For a broader view, you might look at UK weather hub for comparison with British conditions.
Is the BBC’s Chamonix weather forecast accurate?
The BBC uses Meteo France data for the valley. It’s reliable for general trends, but high-altitude microclimates mean you should always cross-check with local webcams or mountain stations.
What’s the best month for skiing in Chamonix?
January and February offer the deepest snow and coldest temperatures. December can be thin early on, and March often brings spring slush lower down. Check Chamonix weather 14 days before booking.
Can I rely on a 30‑day forecast for Chamonix?
Long-range forecasts (30 days) give only broad patterns, not daily accuracy. For planning trips, look at Chamonix weather forecast 15 days combined with historical data by month.