Average temperature in December is 5.2 °C
Average daytime temperature is 10.2 °C
Average night temperature is 1.6 °C
Absolute maximum temperature: 18.4 °C
Absolute minimum temperature: -6.8 °C
Number of sunny days: 19
Number of rainy days: 9
Number of snow days: 3
Precipitation sum: 42 mm
* Weather data for Kōshū Japan is based on climate observations for 2023 year
| Dicembre (°C) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 5.1 | 8.2 | 8.7 | 9.1 | 9.8 | 12.9 | 12.7 | 12.1 | 17.7 | 16.7 | 11.9 | 18.2 | 12.5 | 13.1 | 15 | 18.4 | 6.3 | 5.3 | 4.4 | 10.2 | 3.3 | 1.4 | 4.9 | 6.7 | 7.6 | 9.7 | 9 | 8.7 | 11.5 | 10.3 | 13.4 |
| Apparent max temperature | 2.4 | 4.7 | 4.6 | 4.6 | 5.8 | 10.8 | 8.2 | 8.6 | 13.5 | 12.9 | 10.2 | 19 | 10.1 | 9.6 | 14.1 | 17.6 | 3.4 | 1.1 | 1.3 | 7.5 | -0.5 | -2.6 | 1.2 | 3.1 | 3.8 | 5 | 5.4 | 5.2 | 7.7 | 6.7 | 11.8 |
| Mean temperature | 2.1 | 3.8 | 3.5 | 4.7 | 5.6 | 7.6 | 6.4 | 7.2 | 10.9 | 9.3 | 9.2 | 9.9 | 7.9 | 8.5 | 13.2 | 10.9 | 0.5 | 2.5 | 2.7 | 1.6 | -3.5 | -2.2 | 1.2 | 1.6 | 2.8 | 5.9 | 4.8 | 4.1 | 5.7 | 5.9 | 6.9 |
| Apparent mean temperature | -4.8 | -2.2 | -3.6 | -1.2 | 1.2 | 1.3 | -1.3 | 1.5 | 3.3 | 2.4 | 6.2 | -1.5 | 1.9 | 4.3 | 7.6 | -5.4 | -7 | -2.8 | -0.9 | -9.4 | -12.7 | -9.3 | -4.1 | -5.3 | -3.4 | -0.4 | -0.1 | -1.8 | -0.8 | -0.1 | -2.5 |
| Minimum temperature | -1.1 | 0.8 | 0.2 | 1.6 | 3.7 | 4.6 | 1.7 | 4.3 | 6.3 | 4.6 | 7.5 | 1.7 | 4.5 | 6 | 9.3 | -0.8 | -2.8 | 0.3 | 1.7 | -4.4 | -6.8 | -4.5 | -0.6 | -1 | 0.2 | 2.8 | 2.3 | 0.9 | 2.1 | 2.2 | 1.3 |
| Apparent min temperature | -1 | 0.9 | -0.1 | 1.6 | 2.9 | 5.2 | 2.9 | 4.4 | 7.6 | 6.8 | 8 | 8.3 | 5.7 | 6.4 | 12.1 | 9.6 | -3.2 | -0.9 | 0 | -2.2 | -8.7 | -6.8 | -2.4 | -2.3 | -0.6 | 2.3 | 2.2 | 1.3 | 2.9 | 3.1 | 4.2 |
| Dicembre | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.8 | 9.8 | 9.8 | 9.8 |
| Sunshine duration (h) | 4.5 | 8.9 | 8.9 | 8 | 1.7 | 8.9 | 8.8 | 8.8 | 8.8 | 8 | 7.3 | 6.9 | 8.8 | 8 | 6 | 7 | 8.7 | 8.4 | 4.3 | 8.7 | 8.7 | 8.7 | 8.7 | 8.7 | 8.7 | 8.7 | 8.3 | 8.7 | 8.7 | 8 | 7.6 |
| Precipitation (mm) | 0.8 | 1.4 | 0 | 0 | 2.1 | 0 | 0 | 0 | 0 | 0 | 11.1 | 7.1 | 0 | 0.9 | 5.7 | 4.5 | 0 | 0 | 2.2 | 0 | 0.2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.3 | 1.2 |
| Precipitation hours | 5 | 4 | 0 | 0 | 7 | 0 | 0 | 0 | 0 | 0 | 12 | 8 | 0 | 5 | 15 | 12 | 0 | 0 | 12 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 4 |
| Wind speed (m/s) | 8.5 | 8.8 | 13.4 | 10.7 | 7.4 | 16.5 | 19.8 | 9.4 | 10.2 | 7.1 | 7.7 | 10.7 | 5.8 | 11.7 | 18.7 | 16.2 | 8.2 | 8.4 | 7.7 | 15.1 | 21.4 | 13 | 7.6 | 11.7 | 6.6 | 11.6 | 11.2 | 9.6 | 7.9 | 9.6 | 17.1 |
In December 2023, the highest daytime temperature in Kōshū was 18.4°C.
While the minimum temperature at night dropped to -6.8°C.
The average nighttime and daytime temperatures during December in Kōshū are 1.6°C and 10.2°C respectively.
The precipitation sum in December is about 42 mm.