Average annual temperature is 11.8 °C
Absolute maximum temperature: 36.7 °C
Absolute minimum temperature: -13.3 °C
Number of sunny days: 88 days
Number of rainy days: 233 days
Number of snow days: 44 days
Look at detailed online map of Kōjō
* Weather data for Kōjō 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) | 8.8 | 9.2 | 21.6 | 21.8 | 26.5 | 29.9 | 33.7 | 36.7 | 32.2 | 22.8 | 21.8 | 13.0 |
| Average daytime temperature (°C) | 0.6 | 1.9 | 11.5 | 15.2 | 19.5 | 24.8 | 28.4 | 32.5 | 26.5 | 18.2 | 11.9 | 3.9 |
| Average temperature (°C) | -2.5 | -0.9 | 5.3 | 10.1 | 14.1 | 19.9 | 24.2 | 27.6 | 21.7 | 13.1 | 7.9 | 0.2 |
| Average night temperature (°C) | -5.7 | -3.7 | 0.4 | 6.1 | 9.5 | 16.2 | 20.7 | 23.6 | 17.9 | 9.1 | 4.4 | -3.6 |
| Absolute minimum temperature (°C) | -11.1 | -9.7 | -7.4 | -0.8 | 2.0 | 11.3 | 15.1 | 21.6 | 10.1 | 4.4 | -6.0 | -13.3 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.7 | 5.6 | 8.0 | 8.3 | 9.6 | 8.3 | 9.7 | 11.4 | 7.7 | 8.0 | 4.8 | 4.1 |
| Precipitation (mm) | 101 | 120 | 112 | 156 | 115 | 114 | 225 | 72 | 129 | 137 | 208 | 104 |
| Sunny days | 1 | 2 | 17 | 10 | 12 | 7 | 5 | 8 | 8 | 12 | 6 | 0 |
| Rainy days | 11 | 15 | 13 | 20 | 19 | 23 | 26 | 23 | 22 | 19 | 22 | 20 |
| Snow days | 19 | 11 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 11 |
The best time to visit Kōjō during the most sunny months:
The largest precipitation sum in Kōjō is at