Average temperature in January is -4.1 °C
Average daytime temperature is -2.2 °C
Average night temperature is -5.4 °C
Absolute maximum temperature: 2.3 °C
Absolute minimum temperature: -14.5 °C
Number of sunny days: 9
Number of rainy days: 9
Number of snow days: 13
Precipitation sum: 70 mm
* Weather data for Joensuu Finland 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 | 2.2 | -2.9 | -5.9 | -5.7 | -7.3 | -7.8 | -12.5 | -9.6 | -8.2 | -4.3 | 1.2 | 0.5 | 0.6 | 1.3 | 1.5 | 1.2 | 1.7 | 0.8 | 0.5 | -0.2 | -2.5 | -3 | -5.5 | -0.8 | 2.3 | 1.3 | -6.1 | -0.6 | -0.2 | 0.6 | -0.1 |
| Apparent max temperature | -3.3 | -9.1 | -9.9 | -9.6 | -12.6 | -12.9 | -16.7 | -16.6 | -15.1 | -10.3 | -3.9 | -5.4 | -3.9 | -3.7 | -3.7 | -4.6 | -3.3 | -3.5 | -2.3 | -4.2 | -5.8 | -6.5 | -10.9 | -4.9 | -2.9 | -3.4 | -11 | -5.7 | -5.8 | -3.6 | -3.9 |
| Mean temperature | -1.2 | -4.9 | -8.3 | -8.1 | -8.7 | -9.1 | -13.3 | -11.1 | -10.8 | -7.7 | 0 | -1.1 | -0.1 | 0.8 | 0.9 | 0.7 | 0.2 | -0.2 | 0 | -1.7 | -2.8 | -4.8 | -6.8 | -2 | 0.8 | -1.2 | -7.7 | -3 | -2.4 | 0 | -2.2 |
| Apparent mean temperature | -10.7 | -12.5 | -15.3 | -15.4 | -16 | -15.9 | -18.7 | -19.5 | -20.2 | -15.3 | -9.2 | -8.2 | -6.1 | -5 | -6.4 | -6 | -7.6 | -7.6 | -5.6 | -7.9 | -7.8 | -10.9 | -12.7 | -9.9 | -7.1 | -10.5 | -13.6 | -12.3 | -8.8 | -7.6 | -9.1 |
| Minimum temperature | -4 | -8.4 | -10.8 | -9.8 | -10.5 | -11.3 | -14.5 | -13.3 | -12.7 | -9.2 | -3 | -1.8 | -0.6 | 0.4 | 0.4 | 0.5 | -1.5 | -1.6 | -0.5 | -3.6 | -3.2 | -6.1 | -7.4 | -4.4 | -1.1 | -5.5 | -8.5 | -6.6 | -3.6 | -0.8 | -3.3 |
| Apparent min temperature | -7.1 | -10.5 | -12.5 | -13.3 | -14.1 | -13.9 | -17.9 | -18 | -18.4 | -14 | -5.9 | -7.3 | -5 | -4.3 | -4.9 | -5.5 | -4.9 | -5.2 | -4.5 | -5.4 | -6.7 | -9 | -12 | -6.6 | -4.7 | -5.6 | -12.7 | -8.8 | -7.8 | -5.3 | -7.5 |
| 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) | 5.1 | 5.2 | 5.2 | 5.2 | 5.3 | 5.4 | 5.4 | 5.5 | 5.5 | 5.6 | 5.7 | 5.7 | 5.8 | 5.9 | 6 | 6 | 6.1 | 6.2 | 6.3 | 6.4 | 6.4 | 6.5 | 6.6 | 6.7 | 6.8 | 6.9 | 7 | 7.1 | 7.2 | 7.3 | 7.4 |
| Sunshine duration (h) | 1.7 | 1.9 | 0 | 0 | 0.3 | 1.8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 0 | 0 | 0 | 0 | 0 | 0.6 | 4.8 | 0 | 3.3 | 0 | 0 |
| Precipitation (mm) | 0.8 | 0 | 1.1 | 0.4 | 0.4 | 0 | 0 | 0 | 2.6 | 4.2 | 3.7 | 4.6 | 2.9 | 4.4 | 8.4 | 1.9 | 0.2 | 3.6 | 11.3 | 0 | 0 | 0 | 0 | 3.6 | 0.4 | 0.1 | 0 | 3.5 | 0.5 | 9.8 | 1.4 |
| Precipitation hours | 4 | 0 | 6 | 2 | 4 | 0 | 0 | 0 | 15 | 20 | 11 | 13 | 10 | 10 | 19 | 8 | 2 | 11 | 20 | 0 | 0 | 0 | 0 | 9 | 4 | 1 | 0 | 7 | 3 | 20 | 8 |
| Wind speed (m/s) | 28.9 | 27.5 | 9.9 | 16.6 | 21 | 15.1 | 13.8 | 28.3 | 30.6 | 26.1 | 32.8 | 30.3 | 28.9 | 25.2 | 31.5 | 30.9 | 24.1 | 23.4 | 26 | 12.9 | 13.4 | 12.8 | 17 | 18 | 27.7 | 18.3 | 17.3 | 25.9 | 23.4 | 31.7 | 24.6 |
In January 2023, the highest daytime temperature in Joensuu was 2.3°C.
While the minimum temperature at night dropped to -14.5°C.
The average nighttime and daytime temperatures during January in Joensuu are -5.4°C and -2.2°C respectively.
The precipitation sum in January is about 70 mm.