Average annual temperature is 12.2 °C
Absolute maximum temperature: 33.5 °C
Absolute minimum temperature: -16.6 °C
Number of sunny days: 112 days
Number of rainy days: 217 days
Number of snow days: 36 days
Look at detailed online map of Koshiō
* Weather data for Koshiō 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) | 10.7 | 11.6 | 19.2 | 21.9 | 29.2 | 29.2 | 33.5 | 33.3 | 32.1 | 23.4 | 21.9 | 14.1 |
| Average daytime temperature (°C) | 3.0 | 3.4 | 12.4 | 15.7 | 19.7 | 23.9 | 28.1 | 31.6 | 26.8 | 18.4 | 12.5 | 6.0 |
| Average temperature (°C) | -0.9 | -1.2 | 6.1 | 10.0 | 14.2 | 19.6 | 24.0 | 27.0 | 22.5 | 13.2 | 8.1 | 2.4 |
| Average night temperature (°C) | -4.4 | -6.0 | 0.7 | 5.0 | 9.2 | 15.9 | 20.4 | 23.8 | 19.1 | 8.9 | 4.7 | -0.9 |
| Absolute minimum temperature (°C) | -14.3 | -16.6 | -5.7 | -1.3 | 0.6 | 9.7 | 15.9 | 21.1 | 10.6 | 2.7 | -6.6 | -6.0 |
| 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 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.7 | 12.0 | 13.2 | 14.3 | 14.9 | 14.6 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| 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) | 6.1 | 7.0 | 8.8 | 8.8 | 8.8 | 8.2 | 9.5 | 11.2 | 7.1 | 8.4 | 5.6 | 4.9 |
| Precipitation (mm) | 44 | 56 | 82 | 123 | 126 | 165 | 180 | 117 | 157 | 66 | 121 | 102 |
| Sunny days | 8 | 8 | 20 | 14 | 12 | 3 | 10 | 4 | 5 | 13 | 9 | 6 |
| Rainy days | 11 | 10 | 10 | 16 | 19 | 27 | 21 | 27 | 25 | 18 | 19 | 14 |
| Snow days | 12 | 10 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 11 |
The best time to visit Koshiō during the most sunny months:
The largest precipitation sum in Koshiō is at