Last updated: March 2, 2024
The weather in Chamonix-Mont-Blanc, France, during May is characterized by an average temperature of 7°C (45°F). Highs can soar to 19°C (66°F), while lows may dip to -5°C (23°F). Typically, the humidity level in Chamonix-Mont-Blanc throughout May hovers around 78%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, Chamonix-Mont-Blanc averages 224 mm (8.8 inches) of rainfall, typically over the course of 21 rainy days. The month enjoys an average of 14 hours 57 minutes of daylight, with the sun shining for approximately 11 hours 40 minutes each day. Additionally, there is a 26% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In May, the UV Index in Chamonix-Mont-Blanc reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 1 | 3 | 5 | 7 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |
| Exposure | Low | Moderate | High | VeryHigh | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 25 min | 30 min | 45 min | ||||||