Average annual temperature is 8.6 °C
Absolute maximum temperature: 31.5 °C
Absolute minimum temperature: -14.9 °C
Number of sunny days: 123 days
Number of rainy days: 222 days
Number of snow days: 20 days
Look at detailed online map of Port-Valais
* Weather data for Port-Valais Switzerland is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 13.5 | 12.4 | 18.0 | 16.8 | 20.3 | 24.9 | 31.2 | 31.5 | 25.1 | 23.5 | 12.1 | 10.6 |
| Average daytime temperature (°C) | 2.9 | 6.9 | 8.9 | 9.9 | 15.4 | 21.3 | 22.1 | 22.3 | 20.7 | 16.8 | 6.8 | 6.0 |
| Average temperature (°C) | -1.0 | 1.7 | 3.8 | 5.4 | 10.8 | 16.1 | 17.1 | 17.4 | 15.7 | 11.4 | 3.2 | 1.5 |
| Average night temperature (°C) | -5.1 | -3.2 | -1.3 | 0.4 | 6.1 | 10.3 | 12.2 | 12.6 | 11.1 | 7.1 | -0.3 | -2.0 |
| Absolute minimum temperature (°C) | -14.9 | -9.6 | -9.2 | -4.7 | 2.3 | 7.1 | 7.7 | 6.9 | 4.8 | 3.2 | -10.7 | -12.1 |
| 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) | 9.1 | 10.3 | 11.9 | 13.6 | 15.0 | 15.7 | 15.4 | 14.1 | 12.6 | 10.9 | 9.4 | 8.7 |
| 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) | 4.8 | 8.1 | 7.0 | 8.6 | 10.5 | 12.8 | 12.4 | 10.8 | 10.1 | 7.4 | 3.4 | 3.9 |
| Precipitation (mm) | 172 | 24 | 258 | 233 | 193 | 161 | 384 | 229 | 120 | 210 | 522 | 339 |
| Sunny days | 8 | 18 | 10 | 7 | 5 | 7 | 8 | 15 | 17 | 15 | 3 | 10 |
| Rainy days | 11 | 6 | 19 | 23 | 26 | 23 | 23 | 16 | 13 | 16 | 27 | 19 |
| Snow days | 12 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The best time to visit Port-Valais during the most sunny months:
Months with the longest average daylight duration in Port-Valais:
The largest precipitation sum in Port-Valais is at