Average annual temperature is 13.6 °C
Absolute maximum temperature: 32.6 °C
Absolute minimum temperature: -8.1 °C
Number of sunny days: 101 days
Number of rainy days: 242 days
Number of snow days: 22 days
Look at detailed online map of Iinan Chō
* Weather data for Iinan Chō 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) | 13.0 | 12.8 | 21.1 | 22.4 | 26.0 | 27.8 | 31.9 | 32.6 | 30.1 | 22.5 | 22.8 | 16.7 |
| Average daytime temperature (°C) | 5.0 | 6.2 | 13.7 | 16.0 | 20.5 | 23.8 | 28.0 | 29.5 | 25.9 | 18.4 | 13.6 | 7.7 |
| Average temperature (°C) | 1.9 | 2.8 | 8.7 | 11.6 | 16.0 | 19.9 | 24.3 | 25.5 | 22.4 | 14.4 | 9.8 | 4.6 |
| Average night temperature (°C) | -0.6 | -0.1 | 5.2 | 8.1 | 12.7 | 17.1 | 21.5 | 22.9 | 20.0 | 11.4 | 6.8 | 2.2 |
| Absolute minimum temperature (°C) | -8.1 | -4.5 | -1.9 | 3.3 | 7.1 | 11.1 | 18.2 | 21.0 | 16.6 | 6.8 | -0.3 | -4.6 |
| 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 | 14.2 | 13.4 | 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 | 5.8 | 8.1 | 7.9 | 8.5 | 7.7 | 9.0 | 9.7 | 8.3 | 8.1 | 6.8 | 5.0 |
| Precipitation (mm) | 127 | 120 | 93 | 232 | 258 | 175 | 256 | 177 | 128 | 25 | 101 | 133 |
| Sunny days | 6 | 7 | 16 | 14 | 11 | 7 | 4 | 3 | 4 | 12 | 10 | 7 |
| Rainy days | 15 | 15 | 15 | 16 | 20 | 23 | 27 | 28 | 26 | 19 | 19 | 19 |
| Snow days | 10 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
The best time to visit Iinan Chō during the most sunny months:
The largest precipitation sum in Iinan Chō is at