Average annual temperature is 11.9 °C
Absolute maximum temperature: 33.6 °C
Absolute minimum temperature: -10.4 °C
Number of sunny days: 110 days
Number of rainy days: 228 days
Number of snow days: 27 days
Look at detailed online map of Koyanodaira
* Weather data for Koyanodaira 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) | 12.4 | 10.1 | 18.8 | 21.5 | 27.6 | 27.1 | 29.5 | 33.6 | 29.8 | 21.5 | 24.9 | 17.5 |
| Average daytime temperature (°C) | 1.9 | 2.6 | 9.1 | 14.2 | 18.5 | 22.1 | 27.0 | 29.6 | 25.8 | 16.5 | 12.1 | 6.5 |
| Average temperature (°C) | -0.6 | -0.1 | 5.0 | 9.8 | 14.2 | 18.7 | 23.7 | 25.7 | 21.9 | 12.5 | 8.6 | 3.0 |
| Average night temperature (°C) | -2.8 | -2.6 | 1.6 | 5.7 | 10.6 | 15.6 | 20.7 | 22.1 | 19.0 | 9.4 | 5.2 | -0.2 |
| Absolute minimum temperature (°C) | -10.4 | -6.8 | -4.0 | -1.1 | 3.3 | 10.8 | 17.4 | 19.7 | 12.1 | 3.1 | -5.0 | -6.3 |
| 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 | 14.0 | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.8 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| 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) | 3.9 | 4.6 | 7.6 | 7.8 | 8.8 | 7.9 | 9.6 | 11.1 | 8.4 | 8.0 | 5.7 | 5.1 |
| Precipitation (mm) | 410 | 316 | 235 | 269 | 265 | 312 | 221 | 99 | 249 | 233 | 402 | 305 |
| Sunny days | 2 | 6 | 17 | 13 | 14 | 6 | 13 | 8 | 5 | 13 | 8 | 5 |
| Rainy days | 15 | 13 | 14 | 17 | 17 | 24 | 18 | 23 | 25 | 18 | 22 | 22 |
| Snow days | 14 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
The best time to visit Koyanodaira during the most sunny months:
The largest precipitation sum in Koyanodaira is at