Average temperature in December is -7 °C
Average daytime temperature is -5.2 °C
Average night temperature is -9.2 °C
Absolute maximum temperature: 2.9 °C
Absolute minimum temperature: -15 °C
Number of sunny days: 6
Number of rainy days: 3
Number of snow days: 22
Precipitation sum: 42 mm
* Weather data for Oulu Finland 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 | -5.5 | -6.3 | -5.7 | -7.6 | -9 | -10.6 | -7 | -7.3 | -10.9 | -10.6 | -10 | -10.9 | -9.2 | -6.7 | -5.9 | 2.9 | 2.6 | 1.4 | 0.8 | -1.6 | -5 | -3.7 | -0.9 | 0.3 | -2.7 | -2.9 | -4.7 | -3.9 | -5.5 | -7.5 | -8.4 |
| Apparent max temperature | -10.4 | -11.2 | -9.6 | -11.5 | -13.1 | -15.8 | -12.1 | -13 | -16.6 | -15.9 | -14.6 | -15.5 | -14.1 | -11.1 | -10.1 | -2.9 | -4.2 | -3.6 | -3.4 | -7 | -9 | -9.5 | -5.6 | -4.2 | -5.7 | -7.2 | -8.6 | -7.9 | -9.6 | -12.9 | -13.4 |
| Mean temperature | -6.7 | -9 | -7.3 | -8.8 | -10.8 | -11.9 | -8.5 | -8.8 | -11.8 | -11.1 | -10.9 | -12.7 | -11.6 | -8 | -6.5 | -2.6 | 0.9 | -0.1 | -0.2 | -4.9 | -6.1 | -5.1 | -2.2 | -1.8 | -4.3 | -5.7 | -7.1 | -5.1 | -7.3 | -8.6 | -11.8 |
| Apparent mean temperature | -14 | -16.5 | -14.6 | -14 | -18 | -18.9 | -16.9 | -16.9 | -18.6 | -16.9 | -17 | -20.3 | -18.8 | -14.1 | -11.4 | -11 | -6.7 | -6.8 | -6.9 | -11.3 | -15.1 | -12 | -9.8 | -10.6 | -13.7 | -12.3 | -13.1 | -10.5 | -15.1 | -15.7 | -20.5 |
| Minimum temperature | -9 | -11.6 | -9.9 | -10.1 | -12.9 | -13.8 | -11.5 | -11 | -13.2 | -11.6 | -12 | -14.9 | -13.7 | -9.4 | -6.9 | -6.2 | -0.5 | -1.6 | -1.4 | -7.3 | -10.7 | -6.6 | -3.9 | -6.8 | -9.4 | -7.7 | -9.1 | -6.4 | -9.7 | -10.3 | -15 |
| Apparent min temperature | -11.6 | -13.8 | -11.5 | -12.7 | -15.4 | -17.1 | -13.9 | -14.6 | -17.5 | -16.4 | -15.8 | -17.7 | -16.6 | -12.5 | -10.6 | -7.8 | -5.5 | -5.2 | -4.6 | -9.7 | -10.6 | -10.4 | -7.4 | -6.3 | -7.8 | -10 | -11 | -9.2 | -12 | -13.9 | -16.7 |
| 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) | 4.6 | 4.6 | 4.5 | 4.4 | 4.3 | 4.2 | 4.2 | 4.1 | 4 | 4 | 3.9 | 3.9 | 3.8 | 3.8 | 3.7 | 3.7 | 3.7 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.7 | 3.7 | 3.7 | 3.8 | 3.8 |
| Sunshine duration (h) | 0 | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.1 | 0.3 | 0 | 0 | 0 | 1.4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 |
| Precipitation (mm) | 1.2 | 0.2 | 1.1 | 1 | 0.9 | 0 | 0.2 | 0.5 | 0.1 | 0.7 | 0.1 | 0 | 0.1 | 0.4 | 0.3 | 10.7 | 1.6 | 1 | 13.2 | 0.7 | 0 | 0.2 | 4.6 | 0.2 | 2.2 | 0.4 | 0 | 0.1 | 0.2 | 0 | 0 |
| Precipitation hours | 10 | 2 | 9 | 10 | 9 | 0 | 2 | 5 | 1 | 7 | 1 | 0 | 1 | 4 | 2 | 14 | 2 | 3 | 19 | 6 | 0 | 2 | 24 | 2 | 15 | 3 | 0 | 1 | 2 | 0 | 0 |
| Wind speed (m/s) | 13.5 | 13.4 | 9.5 | 5.6 | 10.8 | 14.8 | 17.5 | 17.1 | 16 | 13.2 | 12 | 12.1 | 11.4 | 10.9 | 9 | 26.7 | 30.3 | 24.5 | 20.7 | 20.5 | 14.5 | 19.6 | 20.3 | 17.5 | 12 | 12.2 | 10.1 | 10.4 | 14.4 | 16.3 | 12.4 |
In December 2023, the highest daytime temperature in Oulu was 2.9°C.
While the minimum temperature at night dropped to -15°C.
The average nighttime and daytime temperatures during December in Oulu are -9.2°C and -5.2°C respectively.
The precipitation sum in December is about 42 mm.