Average annual temperature is 16.8 °C
Absolute maximum temperature: 35.6 °C
Absolute minimum temperature: -4.1 °C
Number of sunny days: 151 days
Number of rainy days: 210 days
Number of snow days: 4 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) | 20.0 | 18.3 | 25.0 | 26.2 | 29.7 | 31.8 | 33.7 | 35.3 | 35.6 | 29.3 | 26.4 | 22.4 |
| Average daytime temperature (°C) | 11.2 | 13.1 | 18.1 | 20.3 | 24.0 | 26.7 | 30.8 | 30.2 | 30.1 | 23.8 | 19.1 | 13.5 |
| Average temperature (°C) | 6.0 | 7.3 | 12.4 | 15.5 | 19.0 | 22.5 | 26.9 | 26.7 | 25.5 | 17.4 | 13.4 | 8.2 |
| Average night temperature (°C) | 1.8 | 2.1 | 7.5 | 11.2 | 14.9 | 19.2 | 23.9 | 24.2 | 22.1 | 12.4 | 9.1 | 4.0 |
| Absolute minimum temperature (°C) | -3.8 | -4.1 | -1.9 | 4.0 | 6.9 | 14.5 | 20.2 | 22.9 | 19.2 | 5.6 | 2.9 | -3.3 |
| 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) | 10.3 | 11.0 | 12.0 | 13.0 | 13.9 | 14.3 | 14.1 | 13.3 | 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 | 7.9 | 8.1 | 8.8 | 6.1 | 9.9 | 8.6 | 9.7 | 8.7 | 8.1 | 7.2 |
| Precipitation (mm) | 82 | 70 | 188 | 246 | 249 | 514 | 106 | 395 | 104 | 30 | 57 | 75 |
| Sunny days | 18 | 17 | 15 | 15 | 13 | 9 | 3 | 2 | 4 | 23 | 16 | 16 |
| Rainy days | 12 | 11 | 16 | 15 | 18 | 21 | 28 | 29 | 26 | 8 | 14 | 12 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
The largest precipitation sum in Deai is at