Average temperature in December is 0.5 °C
Average daytime temperature is 2.2 °C
Average night temperature is -1.7 °C
Absolute maximum temperature: 7.7 °C
Absolute minimum temperature: -10.3 °C
Number of sunny days: 6
Number of rainy days: 18
Number of snow days: 7
Precipitation sum: 86 mm
* Weather data for Białystok Poland 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 | -2.7 | -1.2 | -1.4 | -2.3 | -4.8 | -1.7 | -1.9 | -5.6 | -2.3 | -0.6 | 2.1 | 1.6 | 1.6 | 1.3 | 1.2 | 4.3 | 6.9 | 6.3 | 6.7 | 5.5 | 5.1 | 5.1 | 0.6 | 1.8 | 7.7 | 7.3 | 3.6 | 5 | 7.6 | 7 | 2.9 |
| Apparent max temperature | -6.3 | -4.7 | -5.7 | -7.2 | -9.7 | -6.2 | -6.4 | -9.8 | -7.1 | -5.5 | -2.4 | -1.7 | -1.3 | -2.3 | -3.2 | -0.6 | 2.8 | 2.5 | 2.5 | 2.6 | -0.2 | -0.3 | -5.5 | -2.8 | 2 | 2.2 | -2.1 | 1.1 | 2.9 | 2.1 | -0.7 |
| Mean temperature | -4.9 | -2.9 | -2.5 | -3.7 | -6.8 | -3.3 | -4.6 | -6.7 | -4.4 | -2.7 | 1.1 | 0.7 | 0.8 | 0.4 | -0.8 | 2.7 | 6 | 5.7 | 5.3 | 4.4 | 2.7 | 1.8 | -0.1 | -0.4 | 5.6 | 4.2 | 2.1 | 2.4 | 5.7 | 5.1 | 1.6 |
| Apparent mean temperature | -13.1 | -8.1 | -8.8 | -13.8 | -15.5 | -9.3 | -13.2 | -13.2 | -11.2 | -8.8 | -6.6 | -3.5 | -3.6 | -4.5 | -9 | -3.2 | -1 | 0.6 | 0.5 | -3.2 | -4.1 | -6.3 | -7.5 | -7.2 | -3.5 | -3.5 | -5.2 | -5.7 | -1.3 | -1.5 | -5.1 |
| Minimum temperature | -8.6 | -3.9 | -3.7 | -8.8 | -10.3 | -4.5 | -8 | -8.1 | -6.5 | -3.7 | -1.6 | 0 | 0.1 | -0.3 | -4.9 | 1.4 | 4.2 | 5.3 | 4.8 | 2.3 | 0.8 | 0 | -0.9 | -2.3 | 2.5 | 1.6 | -1.2 | -1.8 | 3.2 | 3.2 | -0.7 |
| Apparent min temperature | -9.2 | -6.6 | -7 | -8.6 | -11.4 | -7.9 | -9.8 | -11.3 | -9.2 | -7.6 | -3.6 | -2.6 | -2.3 | -3.2 | -5.2 | -1.8 | 1.4 | 1.7 | 1.3 | 0.4 | -2.5 | -4.2 | -6.5 | -5.5 | -0.3 | -0.7 | -3.3 | -1.7 | 1.2 | 0.3 | -2.1 |
| 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) | 7.9 | 7.9 | 7.9 | 7.8 | 7.8 | 7.8 | 7.7 | 7.7 | 7.7 | 7.7 | 7.7 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 |
| Sunshine duration (h) | 5.2 | 0 | 0.1 | 3.9 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 1 | 3.8 | 5.6 | 0 | 4.6 | 2.1 | 2 | 1.8 | 0.3 |
| Precipitation (mm) | 0 | 1.7 | 4.3 | 0.2 | 0 | 0 | 1.6 | 0 | 2.4 | 0.5 | 6.7 | 3.1 | 0 | 1 | 0.4 | 0.1 | 2.4 | 5.5 | 6.6 | 7.9 | 10.2 | 4.5 | 0.8 | 3 | 6.2 | 7.5 | 2 | 0.6 | 3.8 | 3.2 | 0 |
| Precipitation hours | 0 | 6 | 13 | 2 | 0 | 0 | 9 | 0 | 7 | 4 | 19 | 13 | 0 | 8 | 4 | 1 | 16 | 16 | 14 | 21 | 16 | 12 | 8 | 5 | 8 | 15 | 5 | 1 | 5 | 11 | 0 |
| Wind speed (m/s) | 12.9 | 14 | 17.7 | 18 | 14.8 | 14.8 | 18.5 | 13.4 | 16.9 | 17.7 | 20.2 | 14.2 | 11.3 | 13.2 | 17.6 | 25.2 | 26.2 | 25.2 | 22.4 | 26.7 | 29.7 | 29.9 | 35.6 | 22.9 | 33.8 | 30.8 | 28.6 | 18.9 | 25.7 | 30.2 | 16.9 |
In December 2023, the highest daytime temperature in Białystok was 7.7°C.
While the minimum temperature at night dropped to -10.3°C.
The average nighttime and daytime temperatures during December in Białystok are -1.7°C and 2.2°C respectively.
The precipitation sum in December is about 86 mm.