Average temperature in December is 0.2 °C
Average daytime temperature is 1.6 °C
Average night temperature is -1 °C
Absolute maximum temperature: 6.6 °C
Absolute minimum temperature: -6.4 °C
Number of sunny days: 3
Number of rainy days: 15
Number of snow days: 13
Precipitation sum: 57 mm
* Weather data for Kökar Åland 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 | 0 | -2.2 | -1.6 | -0.5 | -0.6 | 2 | 2.3 | 0.5 | -0.6 | 1.2 | 0.8 | -2 | -1.6 | 0.7 | 1.3 | 6.6 | 6.1 | 5 | 5.8 | 3.1 | 3.1 | 3.1 | 2.5 | 1 | 1.5 | 1.9 | 1.7 | 3.1 | 3.7 | 1.9 | -3.1 |
| Apparent max temperature | -7.5 | -6.8 | -5.9 | -5.4 | -4.7 | -1.7 | -4.3 | -7.6 | -7.5 | -4.4 | -6.9 | -9 | -7.6 | -5.6 | -3.8 | -1.9 | -0.1 | 0 | -1.6 | -0.6 | -0.5 | -3.3 | -3.5 | -4.9 | -4.3 | -2.8 | -5.8 | -2.5 | -0.2 | -2.2 | -9.4 |
| Mean temperature | -1.4 | -2.8 | -2.5 | -2.8 | -1.3 | -0.2 | 1.4 | -0.2 | -1.6 | 0.3 | -0.1 | -2.4 | -2.6 | -0.9 | 0 | 3.5 | 4.5 | 4.2 | 4.3 | 2 | 2.5 | 2.1 | 1.8 | -1 | 0.6 | 0.1 | 0.9 | 1.8 | 2.6 | -0.1 | -5.3 |
| Apparent mean temperature | -9.2 | -8.9 | -9.4 | -9.1 | -7.5 | -5.9 | -8.2 | -8.5 | -9.4 | -7.9 | -9.5 | -9.9 | -9.9 | -8 | -7.3 | -4.6 | -3 | -3.9 | -6.2 | -6.5 | -8.2 | -8.6 | -7.6 | -8.2 | -5.3 | -7.7 | -8 | -6.2 | -4.8 | -10.1 | -12.2 |
| Minimum temperature | -2.5 | -3.3 | -3.4 | -4.2 | -2 | -1.4 | 0.4 | -0.8 | -2.4 | -1.3 | -2.1 | -2.8 | -3.3 | -2.1 | -1.9 | 0.5 | 3.4 | 3.2 | 2.1 | 1.2 | 1.9 | 1.7 | 1.3 | -2.5 | 0 | -2.1 | -0.9 | 0.3 | 1.7 | -3 | -6.4 |
| Apparent min temperature | -8.5 | -8.1 | -8.2 | -7.5 | -6.1 | -4.5 | -6.3 | -8.1 | -8.6 | -5.9 | -7.7 | -9.5 | -9.2 | -6.8 | -5.7 | -3.3 | -1.8 | -1.3 | -4.2 | -3.9 | -3.6 | -6.1 | -4.8 | -7.4 | -4.8 | -4.8 | -7 | -4.7 | -2.9 | -5.8 | -11.4 |
| 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) | 6.5 | 6.4 | 6.4 | 6.3 | 6.3 | 6.3 | 6.2 | 6.2 | 6.1 | 6.1 | 6.1 | 6 | 6 | 6 | 6 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 6 | 6 | 6 | 6 |
| Sunshine duration (h) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.2 | 1.2 | 0.6 | 3.4 | 3.3 | 2.9 | 0 | 0 | 0.6 | 0 | 0 | 3.1 | 0 | 0 | 0 | 0 | 0 |
| Precipitation (mm) | 0.3 | 0.1 | 1.7 | 1.8 | 0.7 | 0.9 | 2 | 3.6 | 1 | 1 | 1.3 | 1.3 | 0.4 | 2 | 0.7 | 0.2 | 0 | 0 | 5.8 | 6.6 | 2 | 10 | 1.4 | 0.4 | 0.9 | 0.9 | 2.2 | 2.2 | 3.8 | 1.4 | 0 |
| Precipitation hours | 3 | 1 | 12 | 4 | 5 | 3 | 11 | 23 | 10 | 10 | 13 | 11 | 3 | 20 | 6 | 2 | 0 | 0 | 5 | 7 | 9 | 24 | 7 | 3 | 8 | 6 | 11 | 12 | 7 | 14 | 0 |
| Wind speed (m/s) | 35.4 | 23.9 | 27.9 | 27.5 | 21.6 | 25.6 | 46.3 | 42.4 | 32.3 | 32.6 | 38.6 | 35.6 | 29.9 | 27.9 | 30.5 | 47.3 | 43.3 | 38.1 | 52.2 | 42.4 | 55.1 | 57.6 | 45.2 | 44.1 | 26 | 26.9 | 46.1 | 45.4 | 34.8 | 29.3 | 26.5 |
In December 2023, the highest daytime temperature in Kökar was 6.6°C.
While the minimum temperature at night dropped to -6.4°C.
The average nighttime and daytime temperatures during December in Kökar are -1°C and 1.6°C respectively.
The precipitation sum in December is about 57 mm.