Average annual temperature is 7.7 °C
Absolute maximum temperature: 32.0 °C
Absolute minimum temperature: -19.0 °C
Number of sunny days: 145 days
Number of rainy days: 174 days
Number of snow days: 46 days
Look at detailed online map of Kōyōmachi
* Weather data for Kōyōmachi 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) | 5.4 | 6.7 | 14.6 | 16.6 | 23.6 | 26.3 | 31.8 | 32.0 | 29.7 | 21.2 | 17.2 | 9.4 |
| Average daytime temperature (°C) | -5.1 | -3.0 | 5.6 | 11.5 | 16.8 | 21.0 | 25.9 | 26.6 | 23.0 | 14.9 | 8.0 | -0.9 |
| Average temperature (°C) | -9.2 | -6.9 | 1.1 | 6.6 | 11.3 | 16.2 | 21.1 | 22.6 | 18.8 | 10.7 | 4.3 | -4.5 |
| Average night temperature (°C) | -13.6 | -11.2 | -3.3 | 2.6 | 6.8 | 12.4 | 17.3 | 19.5 | 15.5 | 7.3 | 0.8 | -8.2 |
| Absolute minimum temperature (°C) | -18.9 | -19.0 | -10.9 | -3.7 | 0.4 | 5.4 | 11.2 | 12.5 | 10.6 | 1.8 | -7.7 | -16.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.4 | 10.5 | 11.9 | 13.4 | 14.7 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 9.7 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 7.5 | 7.4 | 8.5 | 8.8 | 9.5 | 9.0 | 9.2 | 7.1 | 7.5 | 7.7 | 6.7 | 6.6 |
| Precipitation (mm) | 18 | 32 | 83 | 131 | 67 | 99 | 84 | 75 | 193 | 110 | 88 | 58 |
| Sunny days | 20 | 11 | 16 | 9 | 11 | 9 | 12 | 3 | 9 | 15 | 14 | 16 |
| Rainy days | 0 | 0 | 11 | 20 | 20 | 21 | 19 | 28 | 21 | 16 | 13 | 5 |
| Snow days | 11 | 17 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 10 |
Months with the longest average daylight duration in Kōyōmachi:
The largest precipitation sum in Kōyōmachi is at