Average temperature in January is -1.4 °C
Average daytime temperature is 0.5 °C
Average night temperature is -3.5 °C
Absolute maximum temperature: 4.7 °C
Absolute minimum temperature: -13.9 °C
Number of sunny days: 7
Number of rainy days: 16
Number of snow days: 8
Precipitation sum: 88 mm
* Weather data for Tallinn Estonia is based on climate observations for 2023 year
| January (°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 | 4.7 | 0.4 | 0.8 | 0.5 | -4.8 | -6.5 | -11.1 | -3.1 | -3.2 | 2.4 | 2 | 2.6 | 3.9 | 3.7 | 3.1 | 3.9 | 2 | 2.2 | 1.9 | -1.3 | -1 | -2.4 | -1.2 | 1.2 | 3.3 | 2.5 | -0.2 | 0.9 | 1.8 | 3.3 | 2.1 |
| Apparent max temperature | -0.1 | -4.1 | -3.7 | -3.5 | -10.6 | -10.1 | -17.7 | -9.3 | -9 | -2.1 | -2.2 | -2.6 | -0.7 | -1.1 | -1.7 | -1.7 | -1.5 | -1 | -2.8 | -4.6 | -3.8 | -6 | -6.5 | -2.9 | -1.8 | -1 | -4.2 | -3.5 | -2.8 | -2.1 | -3.6 |
| Mean temperature | 0.7 | -0.8 | -0.3 | -2.2 | -5.9 | -9.4 | -12.2 | -7.6 | -4.5 | -1.9 | 1.4 | 1.6 | 2.6 | 3.2 | 2.5 | 2.7 | 0.7 | 1.5 | 0 | -3.6 | -3.6 | -3.9 | -4.8 | 0.1 | 2.3 | 1.4 | -2.9 | -1.5 | 0.6 | 1.7 | 0.2 |
| Apparent mean temperature | -5.9 | -6.5 | -6.1 | -11.5 | -12.8 | -19.3 | -19.1 | -19 | -12.2 | -11 | -5.8 | -5.3 | -4 | -2.4 | -4.8 | -4.2 | -5.6 | -3.4 | -8.5 | -12 | -11.5 | -10.1 | -10.3 | -7.8 | -3.5 | -5 | -8.5 | -9.2 | -5.4 | -5.5 | -7.2 |
| Minimum temperature | -1.5 | -2.5 | -2.6 | -6.6 | -6.8 | -13.9 | -13 | -12.7 | -6 | -5.5 | 0.8 | 0.5 | 1.2 | 2.6 | 1.8 | 1.8 | -0.9 | 0.3 | -4.6 | -7.9 | -7.4 | -6.7 | -6.5 | -2 | 1.1 | -0.3 | -4.8 | -4.3 | -1.2 | 0.7 | -2.9 |
| Apparent min temperature | -3.2 | -5.2 | -4.6 | -6.6 | -11.9 | -13.9 | -18.5 | -13.8 | -10.5 | -6.9 | -4.2 | -3.8 | -1.8 | -1.7 | -3.2 | -3.1 | -4.2 | -2.5 | -4.8 | -7.1 | -7.2 | -7.4 | -9.2 | -4.7 | -2.6 | -2.8 | -6.6 | -6.8 | -4.2 | -3.9 | -5.3 |
| January | 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) | 6.2 | 6.2 | 6.3 | 6.3 | 6.3 | 6.4 | 6.4 | 6.5 | 6.5 | 6.6 | 6.6 | 6.7 | 6.7 | 6.8 | 6.9 | 6.9 | 7 | 7 | 7.1 | 7.2 | 7.2 | 7.3 | 7.4 | 7.5 | 7.5 | 7.6 | 7.7 | 7.8 | 7.8 | 7.9 | 8 |
| Sunshine duration (h) | 1.3 | 1.6 | 0 | 0 | 0.3 | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 0 | 2.1 | 0 | 0 | 0 | 0 | 0 | 0 | 5.9 | 1.7 | 2.5 | 3.6 | 6 |
| Precipitation (mm) | 0 | 5.4 | 11.5 | 2.9 | 2.2 | 1.7 | 0 | 1.1 | 3.3 | 4.4 | 2.5 | 6.5 | 4 | 1.9 | 6.5 | 1.7 | 1.2 | 1 | 19.7 | 0 | 0 | 0 | 0 | 0.5 | 0.3 | 0.7 | 0 | 1.3 | 1.4 | 6.3 | 0.2 |
| Precipitation hours | 0 | 8 | 19 | 14 | 14 | 11 | 0 | 9 | 11 | 8 | 9 | 15 | 8 | 8 | 11 | 9 | 7 | 5 | 12 | 0 | 0 | 0 | 0 | 4 | 3 | 4 | 0 | 5 | 6 | 12 | 2 |
| Wind speed (m/s) | 22.7 | 19.5 | 21.3 | 16.6 | 25.4 | 11.7 | 20.9 | 24.8 | 24.6 | 20.5 | 31.3 | 26.9 | 24.5 | 25.9 | 36 | 33.6 | 24.3 | 18.8 | 26.9 | 8.4 | 11 | 8.9 | 19.4 | 23.5 | 23.7 | 18.6 | 11.6 | 26.1 | 25.5 | 27.8 | 27.3 |
In January 2023, the highest daytime temperature in Tallinn was 4.7°C.
While the minimum temperature at night dropped to -13.9°C.
The average nighttime and daytime temperatures during January in Tallinn are -3.5°C and 0.5°C respectively.
The precipitation sum in January is about 88 mm.