Average annual temperature is 15.0 °C
Absolute maximum temperature: 38.0 °C
Absolute minimum temperature: -2.3 °C
Number of sunny days: 168 days
Number of rainy days: 196 days
Number of snow days: 1 day
Look at detailed online map of Grastiello
* Weather data for Grastiello 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) | 15.8 | 17.6 | 18.6 | 20.3 | 23.3 | 33.9 | 38.0 | 35.6 | 32.0 | 29.8 | 18.7 | 17.7 |
| Average daytime temperature (°C) | 10.2 | 11.1 | 13.9 | 14.8 | 19.2 | 25.2 | 31.8 | 29.3 | 27.4 | 23.8 | 15.3 | 12.5 |
| Average temperature (°C) | 6.8 | 6.6 | 9.5 | 10.5 | 15.3 | 20.4 | 25.5 | 23.4 | 21.6 | 18.7 | 12.1 | 9.2 |
| Average night temperature (°C) | 3.9 | 3.1 | 5.9 | 6.9 | 12.1 | 16.3 | 20.1 | 18.5 | 17.2 | 14.6 | 9.1 | 6.3 |
| Absolute minimum temperature (°C) | -1.0 | -2.3 | 1.8 | 1.0 | 8.8 | 12.7 | 16.8 | 14.8 | 11.6 | 11.0 | -0.2 | 1.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.8 | 7.4 | 8.4 | 9.4 | 8.3 | 12.4 | 13.7 | 12.3 | 10.6 | 8.7 | 5.7 | 6.3 |
| Precipitation (mm) | 202 | 34 | 99 | 78 | 247 | 119 | 10 | 25 | 87 | 101 | 183 | 46 |
| Sunny days | 16 | 20 | 15 | 7 | 1 | 11 | 21 | 18 | 21 | 15 | 7 | 16 |
| Rainy days | 15 | 7 | 16 | 23 | 30 | 19 | 10 | 13 | 9 | 16 | 23 | 15 |
| Snow days | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Grastiello during the most sunny months:
The largest precipitation sum in Grastiello is at