Average annual temperature is 15.9 °C
Absolute maximum temperature: 37.7 °C
Absolute minimum temperature: -5.1 °C
Number of sunny days: 168 days
Number of rainy days: 195 days
Number of snow days: 2 days
Look at detailed online map of Aisai
* Weather data for Aisai 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) | 15.4 | 15.2 | 21.4 | 26.0 | 30.3 | 30.3 | 36.0 | 37.7 | 32.8 | 25.7 | 25.3 | 20.0 |
| Average daytime temperature (°C) | 9.3 | 10.3 | 16.4 | 19.0 | 22.9 | 26.1 | 31.6 | 32.1 | 29.8 | 22.2 | 17.3 | 12.5 |
| Average temperature (°C) | 4.1 | 5.2 | 10.5 | 14.0 | 18.1 | 22.3 | 27.1 | 27.9 | 25.5 | 16.6 | 12.0 | 7.1 |
| Average night temperature (°C) | 0.0 | 1.1 | 5.5 | 9.4 | 13.6 | 18.8 | 22.8 | 24.6 | 22.1 | 12.2 | 7.7 | 2.6 |
| Absolute minimum temperature (°C) | -5.1 | -3.6 | -0.5 | 3.7 | 7.0 | 11.8 | 18.5 | 22.9 | 17.6 | 7.9 | 0.3 | -2.4 |
| 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 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.6 | 7.2 | 8.3 | 8.2 | 9.0 | 7.1 | 10.4 | 10.0 | 9.2 | 8.6 | 7.9 | 7.3 |
| Precipitation (mm) | 35 | 68 | 95 | 159 | 226 | 357 | 114 | 221 | 147 | 70 | 77 | 59 |
| Sunny days | 17 | 16 | 18 | 15 | 18 | 12 | 11 | 3 | 7 | 17 | 17 | 17 |
| Rainy days | 13 | 12 | 13 | 15 | 13 | 18 | 20 | 28 | 23 | 14 | 13 | 13 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Aisai is at