Average annual temperature is 13.8 °C
Absolute maximum temperature: 34.1 °C
Absolute minimum temperature: -4.6 °C
Number of sunny days: 177 days
Number of rainy days: 188 days
Look at detailed online map of Riello
* Weather data for Riello 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) | 14.4 | 13.6 | 19.1 | 19.9 | 27.1 | 30.7 | 33.0 | 34.1 | 28.1 | 24.8 | 17.8 | 13.7 |
| Average daytime temperature (°C) | 8.2 | 8.9 | 14.3 | 15.7 | 20.8 | 25.6 | 27.7 | 27.6 | 25.0 | 20.0 | 11.9 | 8.8 |
| Average temperature (°C) | 4.8 | 5.1 | 9.5 | 11.2 | 16.8 | 21.2 | 23.4 | 23.3 | 20.4 | 16.2 | 7.7 | 5.6 |
| Average night temperature (°C) | 1.4 | 1.2 | 5.1 | 6.8 | 12.9 | 16.5 | 19.1 | 19.2 | 16.2 | 12.8 | 4.1 | 2.2 |
| Absolute minimum temperature (°C) | -4.5 | -4.6 | -0.2 | 0.8 | 8.9 | 14.3 | 14.3 | 13.1 | 10.9 | 7.2 | -0.5 | -1.0 |
| 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 | 15.6 | 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) | 5.3 | 6.8 | 8.6 | 9.7 | 8.5 | 12.3 | 12.3 | 11.0 | 10.5 | 7.4 | 6.7 | 5.7 |
| Precipitation (mm) | 65 | 2 | 26 | 70 | 182 | 81 | 133 | 126 | 53 | 168 | 131 | 49 |
| Sunny days | 16 | 19 | 17 | 12 | 8 | 11 | 10 | 14 | 20 | 16 | 15 | 19 |
| Rainy days | 15 | 9 | 14 | 18 | 23 | 19 | 21 | 17 | 10 | 15 | 15 | 12 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Riello during the most sunny months:
Months with the longest average daylight duration in Riello:
The largest precipitation sum in Riello is at