August · France
Best time to visit Chamonix in August Weather, crowds & prices
Weather in Chamonix in August
Average temperature 18°C, 87 mm of rain, about 29 days with 6+ hours of sunshine and 67% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
1.7/10
Ranked #10 of 12 months
- Avg temp
- 18°C
- Rainfall
- 87 mm
- Humidity
- 67%
- Days with 6h+ sun
- 29
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
August in Chamonix scores 1.7/10 for snow and ski travel - ranked #10 of 12. Expect around 18°C, 87 mm of rain, and roughly 29 days with 6+ hours of sunshine this month.
Alpine ski slopes and glacial panoramas reach their peak in the crisp, snow-laden heart of January.
August in Chamonix — the hardest end of the year
Temperatures hover around 18°C (64°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 87 mm of rain this month — a flexible day or two helps — with about 29 days with 6+ hours of sunshine and 14.1 hours of daylight to work around it.
That is 1.7/10 on the same scale — 10th of 12 months, versus 8.3/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Expect low-season pricing, and crowds are light for this destination.
If your dates are flexible, January is materially better in Chamonix — 6.6 points higher on the same scale.
Frequently asked
- What is the weather like in Chamonix in August?
- In August, Chamonix averages 18°C, 87 mm of rain, and about 29 days with 6+ hours of sunshine. Its climate-comfort score is 1.7/10.
- Is August a good time to visit Chamonix?
- August earns a 1.7/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Chamonix in August?
- Expect about 87 mm of rain in August. Average humidity is 67% and there are about 29 days with 6+ hours of sunshine.
Curated in Chamonix
Tickets & experiences
Things to do in Chamonix
Chamonix, France. Live activities and tours from GetYourGuide, matched to this destination.