Average temperature in January is 4.4 °C
Average daytime temperature is 7.2 °C
Average night temperature is 2.2 °C
Absolute maximum temperature: 12.3 °C
Absolute minimum temperature: -5.4 °C
Number of sunny days: 9
Number of rainy days: 18
Number of snow days: 4
Precipitation sum: 173 mm
* Weather data for Sežana Slovenia 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 | 10 | 8.9 | 9.9 | 11.8 | 7.8 | 11 | 8.5 | 9.5 | 12.3 | 10.6 | 9.1 | 11.7 | 9.3 | 10.8 | 8.7 | 8.7 | 6.4 | 5.2 | 4 | 2.7 | 2.9 | 3.1 | 3.7 | 6.3 | 4.4 | 2.3 | 2.1 | 3.3 | 3.8 | 5.4 | 7.6 |
| Apparent max temperature | 8.7 | 7.6 | 9.4 | 10.7 | 6.1 | 9.2 | 7 | 6.9 | 11.1 | 8 | 6 | 9.3 | 6.5 | 8.6 | 6.4 | 6.5 | 3.8 | 2.4 | -1.2 | -3.7 | -3.7 | -3.8 | -2.2 | 1.1 | -1.9 | -5.2 | -4.9 | -2.6 | -1.1 | 1.8 | 4.2 |
| Mean temperature | 8.9 | 8.4 | 9 | 8.4 | 7.1 | 6.9 | 7 | 7.7 | 8.3 | 5.8 | 3.6 | 5.9 | 5.6 | 5.4 | 6.7 | 4.9 | 3.6 | 3.7 | 2.3 | 0.5 | 0.5 | 1.3 | 2.9 | 3.9 | 3.1 | 0.8 | 0.2 | 0.4 | 0.2 | 0.1 | 1.9 |
| Apparent mean temperature | 6.8 | 6.4 | 5.8 | 4.1 | 3.6 | 0 | 3.6 | 4.2 | 0.5 | -2.3 | -5.9 | -0.9 | 0.7 | -1.2 | 0.9 | -3.1 | -2.4 | -1.9 | -5.3 | -7.2 | -8.1 | -7.8 | -7 | -2.7 | -5.6 | -7.9 | -7.9 | -8.2 | -6.9 | -8.6 | -7.3 |
| Minimum temperature | 8.1 | 7.8 | 7.9 | 7 | 5.6 | 3.3 | 6.1 | 6.3 | 4.8 | 2.5 | -1.4 | 2.7 | 3.2 | 1.8 | 3.9 | 2.3 | 2.3 | 2.2 | 0.7 | -0.8 | -1 | 0 | 1.3 | 2.7 | 1.6 | -0.7 | -1 | -1.7 | -1.9 | -5.4 | -3.8 |
| Apparent min temperature | 7.6 | 6.7 | 8.1 | 6.6 | 5.1 | 4.8 | 4.9 | 5.5 | 5.5 | 3.1 | -0.3 | 2.8 | 3.2 | 2.3 | 4.1 | 1 | 0.2 | 0.9 | -3.3 | -5.8 | -6.7 | -6.3 | -4.3 | -1.5 | -3.7 | -6.5 | -6.3 | -5.6 | -4.8 | -3.4 | -1.7 |
| 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) | 8.7 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.9 | 8.9 | 8.9 | 8.9 | 9 | 9 | 9 | 9 | 9.1 | 9.1 | 9.1 | 9.2 | 9.2 | 9.2 | 9.3 | 9.3 | 9.3 | 9.4 | 9.4 | 9.5 | 9.5 | 9.6 | 9.6 | 9.6 | 9.7 |
| Sunshine duration (h) | 0 | 0 | 0 | 6.3 | 0 | 6.7 | 0.5 | 0 | 1 | 7 | 5.3 | 7.1 | 2 | 7.8 | 1.4 | 3.2 | 0.4 | 0.4 | 4.4 | 7.9 | 3.2 | 7 | 0 | 0.6 | 0.7 | 8.2 | 7.9 | 7.1 | 7.7 | 8.1 | 8.6 |
| Precipitation (mm) | 0.1 | 3.5 | 4.4 | 0 | 4.7 | 0 | 2.2 | 11.4 | 30.6 | 0.8 | 0 | 0.8 | 0.1 | 0.4 | 14.8 | 49 | 19.1 | 7.7 | 4.5 | 0.8 | 0.5 | 0.1 | 16.7 | 1 | 0 | 0 | 0.3 | 0 | 0 | 0 | 0 |
| Precipitation hours | 1 | 17 | 13 | 0 | 17 | 0 | 19 | 20 | 24 | 3 | 0 | 3 | 1 | 2 | 17 | 18 | 16 | 11 | 12 | 1 | 5 | 1 | 16 | 7 | 0 | 0 | 3 | 0 | 0 | 0 | 0 |
| Wind speed (m/s) | 9.8 | 11 | 9.1 | 16.3 | 13.5 | 12.3 | 12.1 | 17.6 | 29.2 | 14.3 | 16.6 | 17.3 | 10.8 | 17.2 | 17.9 | 25.6 | 22.4 | 16.4 | 27.5 | 27.5 | 37.7 | 37.2 | 47.2 | 26.1 | 36.4 | 35.6 | 30.7 | 25.2 | 20 | 14.5 | 12.6 |
In January 2023, the highest daytime temperature in Sežana was 12.3°C.
While the minimum temperature at night dropped to -5.4°C.
The average nighttime and daytime temperatures during January in Sežana are 2.2°C and 7.2°C respectively.
The precipitation sum in January is about 173 mm.