Chamonix weather in May
May in Chamonix: cool, soaked, with clean air — a good time to visit.
#7 of 12 months in Chamonix · #477 of 604 destinations to visit in May · comfort 68/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Chamonix climate normals — May
| Daytime high | 14°C / 57°F | 🙂 cool |
|---|---|---|
| Nighttime low | 6°C / 42°F | |
| Feels like (high) | 14°C / 57°F | |
| Rainfall | 178 mm / 7 in | ⛈ soaked |
| Rainy days | 19 days | |
| Humidity | 81% | 💦 very humid |
| Dew point | 8°C / 46°F | |
| Sunshine | 10.2 h/day | |
| Daylight | 15 h | |
| Wind | 7 km/h / 4 mph | |
| Snowfall | 35 cm / 13.8 in | |
| Air quality (US AQI) | 40 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Chamonix?
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Chamonix in May — FAQ
- Is May a good time to visit Chamonix?
- May in Chamonix: cool, soaked, with clean air — a good time to visit. It ranks #7 of 12 months for Chamonix on SeasonMap's comfort score (68/100).
- What is the weather like in Chamonix in May?
- In May, Chamonix averages a daily high of 13.8°C and a low of 5.5°C, with about 177.8 mm of rain over roughly 18.6 rainy days.
- What is the air quality in Chamonix in May?
- Chamonix has a mean US Air Quality Index of about 40 in May.
- Does it snow in Chamonix in May?
- Chamonix sees roughly 35 cm of snowfall in May.