Average annual temperature is 12.6 °C
Absolute maximum temperature: 35.3 °C
Absolute minimum temperature: -9.4 °C
Number of sunny days: 87 days
Number of rainy days: 251 days
Number of snow days: 27 days
Look at detailed online map of Koashiro
* Weather data for Koashiro 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) | 11.9 | 13.2 | 19.6 | 21.9 | 31.1 | 31.1 | 35.3 | 34.5 | 32.2 | 23.9 | 22.0 | 15.0 |
| Average daytime temperature (°C) | 3.5 | 4.5 | 12.9 | 16.7 | 20.5 | 24.5 | 29.0 | 31.8 | 27.1 | 18.9 | 13.2 | 6.7 |
| Average temperature (°C) | -0.1 | 0.1 | 6.3 | 10.4 | 14.4 | 19.9 | 24.2 | 27.2 | 22.7 | 13.5 | 8.5 | 3.0 |
| Average night temperature (°C) | -3.3 | -3.8 | 0.9 | 4.7 | 9.1 | 16.0 | 20.1 | 24.2 | 19.6 | 9.2 | 5.0 | -0.3 |
| Absolute minimum temperature (°C) | -9.4 | -9.3 | -5.8 | -1.0 | -0.4 | 9.6 | 15.9 | 20.5 | 11.2 | 4.5 | -0.9 | -5.4 |
| 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 | 12.4 | 11.2 | 10.1 | 9.5 |
| 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) | 5.3 | 6.6 | 8.2 | 8.7 | 8.5 | 7.9 | 9.1 | 10.6 | 7.0 | 8.4 | 5.4 | 3.8 |
| Precipitation (mm) | 49 | 66 | 99 | 107 | 150 | 199 | 164 | 117 | 199 | 51 | 125 | 109 |
| Sunny days | 4 | 6 | 16 | 16 | 14 | 3 | 1 | 1 | 4 | 10 | 7 | 5 |
| Rainy days | 14 | 13 | 14 | 14 | 17 | 27 | 30 | 30 | 26 | 21 | 23 | 22 |
| Snow days | 13 | 9 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
The best time to visit Koashiro during the most sunny months:
The largest precipitation sum in Koashiro is at