Average temperature in January is 7.2 °C
Average daytime temperature is 9.9 °C
Average night temperature is 5 °C
Absolute maximum temperature: 14 °C
Absolute minimum temperature: -1.2 °C
Number of sunny days: 12
Number of rainy days: 19
Number of snow days:
Precipitation sum: 116 mm
* Weather data for Koper Slovenia is based on climate observations for 2023 year
| Gennaio (°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 | 12.4 | 11.9 | 12.4 | 12.6 | 10.3 | 12 | 10.6 | 12.1 | 14 | 11.9 | 11.5 | 13.1 | 11.8 | 11.9 | 11 | 10.7 | 8.8 | 8.3 | 9.3 | 6.7 | 6.2 | 7 | 8.4 | 9.9 | 8.5 | 6.4 | 5.2 | 7.3 | 7.9 | 7.6 | 9.7 |
| Apparent max temperature | 11.7 | 10.9 | 12.4 | 12 | 8.3 | 10.6 | 9 | 10.4 | 12.3 | 10.6 | 8.9 | 10.8 | 10.1 | 10 | 8.7 | 9.1 | 6.5 | 5.9 | 6 | 0.7 | 1.2 | 1.1 | 1.9 | 5.4 | 3.6 | 0.8 | -1.1 | 2.4 | 3.8 | 4.7 | 7.3 |
| Mean temperature | 10.9 | 10.8 | 11.2 | 9.8 | 9.3 | 9 | 9.3 | 10.2 | 10.9 | 8.3 | 6.4 | 7.8 | 7.9 | 7.3 | 9 | 8.6 | 6.9 | 6.8 | 5.8 | 4.4 | 4.3 | 5.1 | 6.7 | 7.4 | 6.6 | 4 | 3.6 | 4.3 | 4.1 | 2.8 | 4 |
| Apparent mean temperature | 8.8 | 9.6 | 10.1 | 6.4 | 6.1 | 3.4 | 6.2 | 5 | 4.7 | 2 | -1.4 | 1.3 | 2 | 1 | 2.9 | 0.8 | 2 | 1.7 | -1.4 | -3.4 | -3 | -5 | -3.1 | 0.8 | 0.2 | -3.6 | -3.9 | -3 | -3.4 | -4.8 | -4.1 |
| Minimum temperature | 9.5 | 10 | 10.5 | 8.1 | 7.9 | 5.3 | 7.6 | 6.7 | 8.1 | 5.6 | 2.2 | 3.6 | 4.7 | 4.6 | 6.4 | 6.3 | 5.6 | 4.9 | 4 | 3.3 | 3.1 | 4.2 | 5.1 | 6.3 | 4.6 | 2.6 | 2.3 | 2.6 | 0.6 | -1.2 | -0.8 |
| Apparent min temperature | 10.1 | 10.1 | 10.9 | 8.7 | 7.6 | 7.7 | 7.7 | 8.6 | 8.2 | 6.2 | 3.2 | 5.3 | 5.8 | 5 | 6.4 | 5.2 | 4.1 | 4.5 | 1.8 | -1.7 | -2.1 | -2.7 | 0.1 | 2.8 | 2.2 | -1.6 | -2.2 | -0.5 | -0.2 | -0.3 | 0.9 |
| Gennaio | 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) | 8.8 | 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 | 9.4 | 9.5 | 9.5 | 9.6 | 9.6 | 9.7 | 9.7 |
| Sunshine duration (h) | 2.7 | 0.2 | 0 | 6.8 | 0 | 5.1 | 5.1 | 0 | 2 | 7 | 5.7 | 6.9 | 1.4 | 7.8 | 1.8 | 5 | 1 | 0.3 | 4.3 | 7.5 | 5 | 7.7 | 0.2 | 1.4 | 7.9 | 8.4 | 8.2 | 8.1 | 8.5 | 8 | 8.6 |
| Precipitation (mm) | 0.1 | 0.7 | 0.6 | 0 | 2.5 | 0 | 1.1 | 5.5 | 27 | 1.1 | 0 | 0.8 | 0.1 | 0 | 8.8 | 33.6 | 13.9 | 3.9 | 8.1 | 0.1 | 0.6 | 0 | 6.2 | 1.4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation hours | 1 | 7 | 4 | 0 | 14 | 0 | 9 | 13 | 23 | 3 | 0 | 3 | 1 | 0 | 12 | 16 | 11 | 10 | 15 | 1 | 4 | 0 | 10 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Wind speed (m/s) | 8.2 | 8.4 | 5.9 | 9.1 | 12 | 7.8 | 11 | 20.8 | 27.7 | 12.7 | 14.3 | 13.3 | 8.1 | 12.6 | 26.7 | 28.3 | 19.4 | 14 | 22.6 | 27.2 | 33.3 | 43.8 | 40.8 | 26.7 | 21.2 | 27.2 | 24.7 | 18.8 | 15.8 | 9.6 | 12 |
In January 2023, the highest daytime temperature in Koper was 14°C.
While the minimum temperature at night dropped to -1.2°C.
The average nighttime and daytime temperatures during January in Koper are 5°C and 9.9°C respectively.
The precipitation sum in January is about 116 mm.