Average annual temperature is 6.3 °C
Absolute maximum temperature: 26.7 °C
Absolute minimum temperature: -16.8 °C
Number of sunny days: 137 days
Number of rainy days: 188 days
Number of snow days: 40 days
Look at detailed online map of Grand Mont Blanc
* Weather data for Grand Mont Blanc Italy is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 8.1 | 11.6 | 9.0 | 13.1 | 16.8 | 22.6 | 23.3 | 26.7 | 20.9 | 21.5 | 12.5 | 11.0 |
| Average daytime temperature (°C) | 1.1 | 4.2 | 4.8 | 7.3 | 11.2 | 16.6 | 19.3 | 19.4 | 16.6 | 12.8 | 5.0 | 4.1 |
| Average temperature (°C) | -2.9 | -0.3 | 1.1 | 3.3 | 7.7 | 13.1 | 15.3 | 15.2 | 12.7 | 8.8 | 1.2 | -0.1 |
| Average night temperature (°C) | -7.2 | -5.0 | -3.2 | -0.9 | 4.3 | 9.2 | 10.8 | 10.7 | 8.9 | 5.4 | -2.3 | -3.8 |
| Absolute minimum temperature (°C) | -15.5 | -16.8 | -11.7 | -12.1 | 0.7 | 5.5 | 6.9 | 5.2 | 2.8 | 0.7 | -8.5 | -12.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 |
| Daylight mean duration (h) | 9.2 | 10.4 | 11.9 | 13.5 | 14.9 | 15.6 | 15.3 | 14.1 | 12.5 | 10.9 | 9.5 | 8.8 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 6.5 | 7.8 | 9.3 | 10.0 | 8.6 | 11.3 | 13.3 | 11.8 | 10.0 | 6.9 | 6.6 | 5.8 |
| Precipitation (mm) | 34 | 29 | 74 | 77 | 305 | 148 | 145 | 147 | 93 | 129 | 104 | 69 |
| Sunny days | 18 | 18 | 14 | 9 | 2 | 2 | 4 | 13 | 14 | 11 | 13 | 19 |
| Rainy days | 2 | 5 | 12 | 14 | 29 | 28 | 27 | 18 | 16 | 20 | 9 | 8 |
| Snow days | 11 | 5 | 5 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 4 |
The best time to visit Grand Mont Blanc during the most sunny months:
Months with the longest average daylight duration in Grand Mont Blanc:
The largest precipitation sum in Grand Mont Blanc is at