Average annual temperature is 9.0 °C
Absolute maximum temperature: 30.1 °C
Absolute minimum temperature: -10.0 °C
Number of sunny days: 141 days
Number of rainy days: 204 days
Number of snow days: 20 days
Look at detailed online map of Isone
* Weather data for Isone 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) | 12.2 | 14.5 | 14.9 | 17.3 | 21.0 | 26.3 | 27.5 | 30.1 | 24.1 | 25.4 | 14.2 | 13.9 |
| Average daytime temperature (°C) | 4.9 | 8.0 | 9.7 | 11.8 | 15.8 | 20.9 | 22.8 | 23.0 | 19.7 | 15.9 | 7.8 | 6.4 |
| Average temperature (°C) | 0.6 | 2.4 | 4.4 | 6.6 | 11.5 | 16.3 | 18.0 | 17.9 | 14.8 | 11.2 | 2.4 | 1.4 |
| Average night temperature (°C) | -3.1 | -2.2 | -1.1 | 0.9 | 6.9 | 11.0 | 12.8 | 12.6 | 10.0 | 6.8 | -1.9 | -2.5 |
| Absolute minimum temperature (°C) | -8.3 | -10.0 | -4.7 | -4.8 | 2.6 | 7.2 | 7.3 | 5.7 | 4.5 | 0.4 | -5.2 | -9.8 |
| 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) | 5.8 | 7.8 | 8.1 | 9.3 | 9.1 | 11.8 | 12.7 | 10.9 | 8.8 | 6.7 | 6.2 | 5.3 |
| Precipitation (mm) | 43 | 12 | 79 | 98 | 236 | 238 | 153 | 247 | 200 | 297 | 99 | 71 |
| Sunny days | 19 | 18 | 12 | 7 | 1 | 6 | 4 | 11 | 15 | 16 | 13 | 19 |
| Rainy days | 8 | 4 | 17 | 22 | 30 | 24 | 27 | 20 | 15 | 15 | 14 | 8 |
| Snow days | 4 | 6 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 4 |
The best time to visit Isone during the most sunny months:
Months with the longest average daylight duration in Isone:
The largest precipitation sum in Isone is at