Average annual temperature is 11.5 °C
Absolute maximum temperature: 32.8 °C
Absolute minimum temperature: -6.2 °C
Number of sunny days: 174 days
Number of rainy days: 183 days
Number of snow days: 8 days
Look at detailed online map of Isola San Giulio
* Weather data for Isola San Giulio 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) | 13.6 | 17.0 | 16.4 | 18.6 | 23.5 | 28.5 | 29.5 | 32.8 | 25.6 | 27.2 | 15.9 | 16.6 |
| Average daytime temperature (°C) | 6.6 | 9.3 | 11.8 | 14.4 | 18.0 | 23.0 | 25.1 | 25.9 | 21.7 | 17.5 | 10.1 | 8.5 |
| Average temperature (°C) | 2.8 | 4.0 | 7.1 | 9.5 | 13.7 | 18.6 | 20.6 | 20.9 | 17.3 | 13.6 | 5.4 | 3.6 |
| Average night temperature (°C) | -0.2 | -0.2 | 2.6 | 4.2 | 9.3 | 13.5 | 15.9 | 15.4 | 12.8 | 9.8 | 2.0 | 0.1 |
| Absolute minimum temperature (°C) | -3.7 | -6.2 | -2.8 | -0.1 | 4.2 | 8.7 | 11.8 | 10.6 | 7.9 | 5.7 | -1.4 | -3.5 |
| 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 | 10.4 | 11.9 | 13.5 | 14.9 | 15.7 | 15.3 | 14.1 | 12.5 | 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 | 7.8 | 8.2 | 9.3 | 9.3 | 12.0 | 12.7 | 11.5 | 9.5 | 6.8 | 6.8 | 5.5 |
| Precipitation (mm) | 23 | 12 | 50 | 97 | 332 | 127 | 99 | 171 | 173 | 178 | 70 | 43 |
| Sunny days | 20 | 21 | 17 | 14 | 5 | 9 | 5 | 15 | 18 | 14 | 17 | 19 |
| Rainy days | 9 | 3 | 14 | 16 | 26 | 21 | 26 | 16 | 12 | 17 | 12 | 11 |
| Snow days | 2 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Isola San Giulio during the most sunny months:
Months with the longest average daylight duration in Isola San Giulio:
The largest precipitation sum in Isola San Giulio is at