Average annual temperature is 12.5 °C
Absolute maximum temperature: 31.5 °C
Absolute minimum temperature: -9.7 °C
Number of sunny days: 97 days
Number of rainy days: 247 days
Number of snow days: 21 days
Look at detailed online map of Ai
* Weather data for Ai 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) | 11.3 | 11.6 | 20.1 | 23.3 | 26.6 | 26.7 | 31.5 | 31.3 | 28.5 | 22.1 | 21.7 | 16.1 |
| Average daytime temperature (°C) | 3.2 | 4.5 | 12.3 | 14.9 | 19.4 | 23.1 | 27.7 | 28.6 | 25.1 | 17.3 | 12.6 | 6.6 |
| Average temperature (°C) | 0.3 | 1.1 | 7.4 | 10.4 | 15.0 | 19.1 | 23.8 | 24.8 | 21.5 | 13.3 | 8.9 | 3.6 |
| Average night temperature (°C) | -2.6 | -1.9 | 3.5 | 6.6 | 11.6 | 16.1 | 21.0 | 22.1 | 19.0 | 10.1 | 5.7 | 1.0 |
| Absolute minimum temperature (°C) | -9.7 | -7.3 | -5.5 | 0.4 | 3.4 | 10.4 | 18.0 | 20.5 | 14.8 | 5.4 | -0.7 | -5.9 |
| 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) | 5.1 | 5.7 | 7.9 | 7.6 | 8.6 | 7.6 | 9.0 | 9.4 | 8.0 | 8.3 | 6.5 | 5.1 |
| Precipitation (mm) | 153 | 113 | 97 | 217 | 249 | 164 | 198 | 180 | 102 | 30 | 102 | 128 |
| Sunny days | 6 | 6 | 15 | 12 | 12 | 9 | 5 | 2 | 1 | 11 | 10 | 8 |
| Rainy days | 16 | 16 | 15 | 18 | 19 | 21 | 26 | 29 | 29 | 20 | 19 | 19 |
| Snow days | 9 | 6 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
The best time to visit Ai during the most sunny months:
The largest precipitation sum in Ai is at