Average annual temperature is 17.4 °C
Absolute maximum temperature: 34.2 °C
Absolute minimum temperature: -3.9 °C
Number of sunny days: 153 days
Number of rainy days: 211 days
Number of snow days: 1 day
Look at detailed online map of Itachiya
* Weather data for Itachiya Japan is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 19.4 | 21.1 | 27.1 | 23.8 | 28.2 | 31.9 | 34.2 | 33.0 | 33.4 | 27.2 | 27.1 | 23.6 |
| Average daytime temperature (°C) | 10.7 | 11.5 | 16.5 | 19.3 | 22.3 | 25.9 | 31.0 | 30.7 | 29.9 | 23.0 | 18.9 | 13.4 |
| Average temperature (°C) | 6.7 | 8.1 | 12.4 | 15.4 | 18.9 | 22.6 | 27.4 | 27.6 | 26.2 | 18.8 | 14.3 | 9.2 |
| Average night temperature (°C) | 3.3 | 5.4 | 8.5 | 11.9 | 15.8 | 19.8 | 24.3 | 25.2 | 23.3 | 15.1 | 10.6 | 5.8 |
| Absolute minimum temperature (°C) | -3.9 | 0.5 | 1.3 | 6.4 | 8.8 | 14.3 | 20.5 | 23.6 | 20.0 | 10.0 | 5.3 | -1.0 |
| 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 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.3 | 14.1 | 13.4 | 12.4 | 11.4 | 10.5 | 10.0 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.3 | 6.8 | 8.7 | 8.4 | 9.0 | 6.2 | 10.2 | 9.9 | 9.7 | 8.9 | 8.2 | 7.0 |
| Precipitation (mm) | 67 | 109 | 131 | 158 | 223 | 398 | 155 | 165 | 57 | 25 | 26 | 65 |
| Sunny days | 19 | 10 | 20 | 16 | 14 | 8 | 3 | 2 | 6 | 20 | 20 | 15 |
| Rainy days | 12 | 18 | 11 | 14 | 17 | 22 | 28 | 29 | 24 | 11 | 10 | 15 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Itachiya is at