Average annual temperature is 14.2 °C
Absolute maximum temperature: 32.1 °C
Absolute minimum temperature: -10.4 °C
Number of sunny days: 123 days
Number of rainy days: 226 days
Number of snow days: 16 days
Look at detailed online map of Deai
* Weather data for Deai 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) | 16.8 | 14.2 | 21.5 | 23.6 | 27.4 | 30.8 | 32.1 | 31.9 | 30.9 | 23.9 | 24.1 | 18.5 |
| Average daytime temperature (°C) | 6.2 | 7.7 | 14.0 | 17.1 | 21.1 | 24.4 | 29.5 | 29.4 | 27.8 | 19.7 | 15.2 | 9.6 |
| Average temperature (°C) | 2.8 | 3.7 | 9.4 | 12.4 | 16.5 | 20.4 | 24.8 | 25.3 | 23.4 | 15.1 | 10.6 | 5.6 |
| Average night temperature (°C) | -0.2 | 0.1 | 5.2 | 8.0 | 12.6 | 17.2 | 21.2 | 22.3 | 20.2 | 11.1 | 6.7 | 2.0 |
| Absolute minimum temperature (°C) | -10.4 | -5.4 | -1.6 | 3.4 | 6.4 | 13.3 | 16.2 | 19.0 | 15.1 | 5.8 | 1.1 | -4.5 |
| 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 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 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) | 6.3 | 6.7 | 7.8 | 7.8 | 8.6 | 6.2 | 9.5 | 8.8 | 9.2 | 8.4 | 7.2 | 6.9 |
| Precipitation (mm) | 109 | 80 | 120 | 252 | 260 | 379 | 98 | 246 | 83 | 47 | 94 | 97 |
| Sunny days | 10 | 7 | 18 | 17 | 14 | 10 | 5 | 2 | 3 | 16 | 11 | 10 |
| Rainy days | 14 | 16 | 13 | 13 | 17 | 20 | 26 | 29 | 27 | 15 | 19 | 17 |
| Snow days | 7 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
The largest precipitation sum in Deai is at