Average annual temperature is 9.7 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: -13.9 °C
Number of sunny days: 132 days
Number of rainy days: 193 days
Number of snow days: 40 days
Look at detailed online map of Sion District
* Weather data for Sion District 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) | 10.6 | 14.7 | 13.7 | 18.0 | 22.7 | 27.5 | 33.0 | 35.2 | 29.2 | 25.7 | 11.8 | 7.9 |
| Average daytime temperature (°C) | 3.3 | 8.4 | 8.9 | 10.8 | 17.0 | 22.8 | 24.7 | 24.7 | 23.6 | 18.1 | 6.0 | 4.1 |
| Average temperature (°C) | -0.1 | 3.2 | 4.6 | 6.3 | 12.0 | 17.7 | 19.2 | 19.1 | 17.5 | 12.6 | 2.5 | 1.2 |
| Average night temperature (°C) | -3.3 | -1.1 | 0.5 | 2.2 | 7.1 | 12.2 | 13.7 | 13.5 | 11.8 | 7.8 | -1.2 | -2.5 |
| Absolute minimum temperature (°C) | -11.0 | -8.7 | -5.2 | -1.9 | 0.9 | 7.3 | 7.4 | 6.9 | 4.8 | 2.3 | -6.4 | -13.9 |
| 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) | 9.1 | 10.3 | 11.9 | 13.6 | 15.0 | 15.7 | 15.4 | 14.1 | 12.6 | 10.9 | 9.5 | 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) | 5.6 | 8.2 | 7.6 | 8.7 | 10.1 | 12.4 | 12.7 | 10.8 | 10.4 | 7.6 | 3.9 | 4.2 |
| Precipitation (mm) | 83 | 11 | 258 | 141 | 159 | 131 | 82 | 102 | 63 | 117 | 304 | 268 |
| Sunny days | 13 | 19 | 11 | 11 | 4 | 5 | 7 | 13 | 18 | 16 | 3 | 12 |
| Rainy days | 10 | 6 | 13 | 16 | 27 | 25 | 24 | 18 | 12 | 15 | 15 | 12 |
| Snow days | 8 | 3 | 7 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 7 |
The best time to visit Sion District during the most sunny months:
Months with the longest average daylight duration in Sion District:
The largest precipitation sum in Sion District is at