Average temperature in December is 3.5 °C
Average daytime temperature is 9.5 °C
Average night temperature is -0.6 °C
Absolute maximum temperature: 20.6 °C
Absolute minimum temperature: -7.8 °C
Number of sunny days: 13
Number of rainy days: 13
Number of snow days: 5
Precipitation sum: 103 mm
* Weather data for Chikuma Japan is based on climate observations for 2023 year
| December (°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 | 6.5 | 5.3 | 7.3 | 8.2 | 10.5 | 12.4 | 12.2 | 11.6 | 15.2 | 15.3 | 11.2 | 12.8 | 11.2 | 11.5 | 18 | 20.6 | 8.2 | 4 | 6.4 | 11.4 | 8.2 | 2.8 | 5.8 | 9 | 5.6 | 8.1 | 4.5 | 8.1 | 9.3 | 9 | 5.3 |
| Apparent max temperature | 1.5 | 1.5 | 4.6 | 4.4 | 6.6 | 9.2 | 9.7 | 9.1 | 11.4 | 12 | 9.1 | 11.3 | 7.3 | 8.2 | 15.4 | 18.8 | 2.3 | 0 | 1.4 | 7 | 3.7 | -0.5 | 0.9 | 5.7 | 0.5 | 3.1 | -0.2 | 3.7 | 5.6 | 5 | 3.5 |
| Mean temperature | 0.7 | 0.8 | 2.1 | 2.5 | 4.4 | 7.5 | 4.6 | 4.7 | 5.3 | 8.2 | 7.9 | 6.8 | 4.6 | 6 | 13 | 13 | 4.3 | -1 | 2.1 | 6.2 | 2.6 | -3.9 | -2.1 | 0.8 | -0.9 | 1.4 | -1.1 | 0.8 | 1.7 | 2.4 | 2.6 |
| Apparent mean temperature | -6.6 | -6.3 | -4.4 | -4.4 | -2 | 1.2 | -5 | -2.6 | -3.1 | 3.3 | 4.1 | -0.4 | -2 | 0.4 | 5.4 | 2.1 | -6.3 | -7.7 | -4 | -0.2 | -10.8 | -12.5 | -10.3 | -8.3 | -8.9 | -5.7 | -9.6 | -6.5 | -6.1 | -3.4 | -2 |
| Minimum temperature | -2.6 | -3.2 | -1.6 | -1.4 | 1.1 | 4 | -1.9 | 0.8 | -0.3 | 5.1 | 5.8 | 2.3 | 0.9 | 3.2 | 6.7 | 7.6 | -1.4 | -3.9 | -0.3 | 3.1 | -5.6 | -7.8 | -6.4 | -4.2 | -5.4 | -1.6 | -6.1 | -2.9 | -2.5 | 0 | 1.3 |
| Apparent min temperature | -3.2 | -2.3 | -0.5 | -0.5 | 1.3 | 4.7 | 1.6 | 1.8 | 2.3 | 6.2 | 6.1 | 4.3 | 1.5 | 3.3 | 12.1 | 10 | -0.7 | -5.2 | -2 | 2.7 | -2.5 | -8.3 | -6.4 | -3.3 | -4.6 | -2.6 | -4.9 | -2.9 | -1.5 | -0.9 | -0.3 |
| December | 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 | 9.8 | 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 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 |
| Sunshine duration (h) | 7.6 | 7.1 | 2.3 | 8 | 5.9 | 8 | 2.7 | 8.7 | 8.7 | 8 | 5.9 | 0.9 | 8.5 | 7.7 | 0 | 4 | 2.1 | 8 | 4 | 7 | 2.6 | 5.2 | 5.9 | 6.1 | 7.9 | 8 | 6.3 | 8.2 | 8.1 | 8 | 3.8 |
| Precipitation (mm) | 1.2 | 0 | 1.4 | 0 | 0 | 0.1 | 7 | 0 | 0 | 0 | 15 | 0.1 | 0 | 3.2 | 36.1 | 6.2 | 2.1 | 0 | 0.3 | 1.4 | 4.5 | 7.6 | 0 | 1.2 | 0.5 | 0 | 0 | 0 | 0 | 1.8 | 13.4 |
| Precipitation hours | 5 | 0 | 10 | 0 | 0 | 1 | 9 | 0 | 0 | 0 | 11 | 1 | 0 | 4 | 20 | 19 | 16 | 0 | 3 | 9 | 13 | 20 | 0 | 2 | 4 | 0 | 0 | 0 | 0 | 6 | 16 |
| Wind speed (m/s) | 17.8 | 12.3 | 5.5 | 8 | 6.4 | 8.3 | 15.9 | 5.9 | 7.6 | 7.3 | 9.3 | 16.6 | 13.3 | 8.8 | 26.7 | 29.8 | 21.6 | 16.6 | 14.8 | 15.9 | 25.9 | 12.8 | 16.3 | 13.4 | 17.1 | 11.5 | 16.3 | 8.2 | 11.3 | 7.9 | 12.2 |
In December 2023, the highest daytime temperature in Chikuma was 20.6°C.
While the minimum temperature at night dropped to -7.8°C.
The average nighttime and daytime temperatures during December in Chikuma are -0.6°C and 9.5°C respectively.
The precipitation sum in December is about 103 mm.