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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the WordPatch weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
For the most useful take on Annecy weather right now, check the live forecast above: it shows conditions for the next few days. The best times to visit are late spring to early autumn (May–September), when temperatures are warmest and the lake is inviting for swimming and boating.
When is the best time to visit Annecy?
Annecy sits in the French Alps, so its weather varies sharply with altitude. May–September offers the most reliable warmth, with July and August averaging 24–27°C. For fewer crowds, consider June or September. Winter (December–February) brings snow to the surrounding mountains, ideal for skiing, but the town itself is cold and often grey.
What should you pack for Annecy weather?
Pack layers whatever the season. In summer: light clothing, a waterproof jacket for sudden thunderstorms, and swimwear for the lake. Spring and autumn: a warm jumper and rainproof coat. Winter: thermal layers, hat, gloves, and sturdy boots if you plan to walk in snow. UV can be strong in the mountains – bring sunscreen even on cooler days.
Is Annecy warm enough to swim in the lake?
Yes, from late June to early September the lake surface typically reaches 21–25°C. July and August are best for comfortable swimming. Outside these months the water is noticeably cooler.
Does Annecy get snow in winter?
Snow in the town itself is intermittent and often melts quickly. However, the surrounding mountains (e.g. La Clusaz) receive reliable snowfall from December to March, making them popular for skiing and snowboarding.
How reliable are the longer-range forecasts for Annecy?
Forecasts beyond 10 days are less reliable due to mountain weather patterns. For planning, check a 10 day weather forecast or the BBC weather Annecy 14 days outlook. A 30-day forecast gives a general trend but cannot guarantee daily conditions.
Sources
For more UK-focused travel weather, see our UK weather hub or compare conditions with Birmingham weather. If you’re checking longer-term outlooks, remember that annecy weather forecast 15 days and weather in lake annecy 10 days are best treated as indicative rather than exact.