Average temperature in December is 5.8 °C
Average daytime temperature is 10.6 °C
Average night temperature is 2 °C
Absolute maximum temperature: 19.6 °C
Absolute minimum temperature: -2.4 °C
Number of sunny days: 13
Number of rainy days: 14
Number of snow days: 4
Precipitation sum: 61 mm
* Weather data for Niimi 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 | 8.1 | 9.7 | 10.4 | 12.2 | 10.1 | 14.9 | 11.7 | 14.2 | 17.9 | 19.5 | 14.4 | 15.1 | 12.6 | 14.1 | 19.6 | 14.3 | 2.1 | 6.1 | 4.7 | 7.6 | 2 | 1.9 | 5.1 | 6.8 | 7.2 | 8.4 | 11.3 | 12.2 | 11.8 | 11.3 | 12.4 |
| Apparent max temperature | 3.1 | 5.3 | 5.9 | 9.5 | 8.5 | 12.4 | 6.9 | 10.7 | 16.3 | 19.1 | 12.4 | 13.6 | 9.8 | 12.6 | 18.5 | 13 | -2.6 | 1.6 | 2.3 | 2.6 | -4.8 | -4.7 | 0.5 | 3.4 | 2.3 | 4 | 8.5 | 8.9 | 8.9 | 9.2 | 9.5 |
| Mean temperature | 3.4 | 4.7 | 3.8 | 7.1 | 6.1 | 10 | 4.6 | 7.4 | 10.3 | 13.6 | 11.7 | 10 | 7 | 10 | 14.6 | 6.7 | 0.7 | 3 | 3.2 | 3 | -0.7 | -0.4 | 1.4 | 2.9 | 1.3 | 4.3 | 4.8 | 6 | 4.9 | 7.3 | 7.3 |
| Apparent mean temperature | -3.5 | -2.3 | -4.9 | 1.1 | -1.3 | 4 | -3.3 | 0.9 | 1.8 | 9.4 | 8.2 | 2.2 | 0.6 | 6.9 | 6.5 | -5.5 | -5.7 | -2.6 | -1.3 | -6.5 | -7.2 | -6.3 | -4.3 | -5.1 | -5.9 | -1.8 | -2.8 | -2.8 | -2.2 | 2.1 | 0.5 |
| Minimum temperature | -0.2 | 0.8 | -2.1 | 3.7 | 1.2 | 6.9 | -0.1 | 3.2 | 4.1 | 10.7 | 9.9 | 4.8 | 3 | 8.1 | 8 | 0.1 | -0.2 | 0.6 | 1.5 | -0.9 | -2.2 | -2 | -1.1 | -1.8 | -2.4 | 1 | -0.1 | 0.1 | 0.4 | 4 | 3.8 |
| Apparent min temperature | -0.5 | 1.2 | 0.5 | 4.7 | 4.3 | 8 | 0.9 | 4.9 | 8.8 | 12.9 | 10.7 | 7.4 | 4.6 | 8.9 | 13.9 | 2.4 | -4.2 | -0.3 | 0.7 | -1.9 | -6.2 | -5.3 | -2.2 | -0.1 | -2.5 | 1.1 | 2.2 | 3.3 | 2.3 | 5.4 | 3.6 |
| 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) | 10 | 10 | 10 | 9.9 | 9.9 | 9.9 | 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 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 |
| Sunshine duration (h) | 7.8 | 8.1 | 8.7 | 8.4 | 0.6 | 7.1 | 9 | 8.4 | 8.3 | 8.2 | 2 | 3.5 | 8.8 | 6 | 5.9 | 1.4 | 4.6 | 7.4 | 0 | 5.3 | 8.5 | 8.5 | 2.5 | 5.5 | 8.7 | 6.6 | 7.5 | 8.7 | 8 | 7.8 | 4.5 |
| Precipitation (mm) | 0.7 | 0.3 | 0 | 0 | 9.4 | 1.9 | 0 | 0 | 0 | 0.7 | 20.7 | 0.3 | 0 | 10.3 | 4.6 | 0.8 | 0.1 | 0.3 | 1.4 | 0.1 | 0.1 | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.4 | 6.4 |
| Precipitation hours | 3 | 3 | 0 | 0 | 12 | 5 | 0 | 0 | 0 | 5 | 16 | 3 | 0 | 12 | 7 | 5 | 1 | 3 | 10 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 15 |
| Wind speed (m/s) | 20.2 | 16.5 | 19.9 | 10.2 | 5.5 | 18.4 | 27 | 9.8 | 10.5 | 11.9 | 13.8 | 20 | 10.5 | 5.4 | 21.8 | 24.2 | 25.6 | 14.9 | 7.2 | 20.8 | 26 | 25.2 | 14.2 | 8.7 | 17.7 | 17.9 | 7.6 | 10.7 | 10.9 | 8.7 | 24.7 |
In December 2023, the highest daytime temperature in Niimi was 19.6°C.
While the minimum temperature at night dropped to -2.4°C.
The average nighttime and daytime temperatures during December in Niimi are 2°C and 10.6°C respectively.
The precipitation sum in December is about 61 mm.