Average temperature in January is 5.6 °C
Average daytime temperature is 8.3 °C
Average night temperature is 2.9 °C
Absolute maximum temperature: 12.8 °C
Absolute minimum temperature: -3.3 °C
Number of sunny days: 12
Number of rainy days: 18
Number of snow days: 1
Precipitation sum: 165 mm
* Weather data for Cardiff United Kingdom 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 | 10.6 | 8 | 12.2 | 12.3 | 12 | 11.8 | 11.1 | 7.9 | 7.9 | 12.8 | 10.4 | 11.3 | 9.6 | 11.7 | 7.2 | 5.2 | 4.1 | 5.1 | 5.9 | 6.5 | 4.1 | 4 | 4.3 | 3.5 | 8.3 | 8.2 | 5.9 | 6.2 | 9.3 | 9.3 | 10.6 |
| Apparent max temperature | 7.5 | 4.9 | 8.2 | 7.3 | 9 | 8 | 7.4 | 3.9 | 2.7 | 8.7 | 4.7 | 6.3 | 4.4 | 7.1 | 2.6 | 0.7 | 0.6 | 0.8 | 2.6 | 3.8 | 0.7 | 1.1 | 1.6 | 1.1 | 6.1 | 4.4 | 2.1 | 3.4 | 5.8 | 6 | 6.5 |
| Mean temperature | 8.9 | 4.8 | 9.1 | 11.5 | 11 | 9.6 | 9.6 | 6.6 | 6.6 | 9.9 | 8.8 | 10.3 | 8 | 8.5 | 5.4 | 2 | -0.5 | 1.6 | 1.2 | 1.2 | 0.8 | 1.4 | 1.1 | -0.2 | 4.8 | 4.2 | 3.1 | 2.4 | 6.6 | 6.9 | 8.2 |
| Apparent mean temperature | 3.6 | -2.4 | -0.7 | 5.2 | 4.8 | 4.4 | 2.7 | 1.2 | 0.8 | 2.3 | 1.8 | 1.2 | -0.1 | -0.6 | -1.5 | -7 | -6.2 | -5.3 | -5 | -5.3 | -5.7 | -5.6 | -5.2 | -6.2 | -0.6 | -1.9 | -2.3 | -4.3 | -1.3 | 0.8 | 1.7 |
| Minimum temperature | 7.4 | 1.1 | 2.3 | 10.6 | 9.3 | 7.9 | 7.1 | 5.1 | 5.2 | 5.4 | 7.7 | 8.1 | 6 | 5.7 | 3.3 | -3.3 | -2.1 | -1.1 | -1.6 | -1.5 | -1.8 | -1.7 | -1.9 | -2.7 | 1.7 | 1.7 | 0.8 | -0.9 | 1.5 | 3.6 | 6 |
| Apparent min temperature | 5.5 | 2 | 5.3 | 6.3 | 7.6 | 6.1 | 5.4 | 2.6 | 1.7 | 5.7 | 3.1 | 4 | 2.4 | 3.6 | 0.5 | -1.9 | -4.3 | -2.6 | -2.3 | -2.4 | -2.9 | -1.8 | -1.9 | -3.1 | 2 | 0.5 | -0.4 | -0.7 | 3.6 | 3.6 | 4.2 |
| 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) | 7.9 | 7.9 | 8 | 8 | 8 | 8 | 8.1 | 8.1 | 8.1 | 8.2 | 8.2 | 8.2 | 8.3 | 8.3 | 8.3 | 8.4 | 8.4 | 8.5 | 8.5 | 8.6 | 8.6 | 8.6 | 8.7 | 8.7 | 8.8 | 8.8 | 8.9 | 9 | 9 | 9.1 | 9.1 |
| Sunshine duration (h) | 2.1 | 6.5 | 0 | 5.4 | 1.6 | 2.3 | 4 | 0.3 | 6.7 | 0 | 2.3 | 2.2 | 6.8 | 1 | 6.9 | 7 | 6.2 | 5.2 | 7 | 7.1 | 4.8 | 1 | 4.4 | 7.2 | 0.9 | 7.4 | 4.4 | 2.3 | 2.9 | 4.8 | 6.1 |
| Precipitation (mm) | 5.8 | 0 | 17.5 | 5 | 8.4 | 5.4 | 21.7 | 10.7 | 0 | 17.9 | 17.9 | 25.5 | 0.9 | 24 | 2.6 | 0.4 | 0 | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.5 | 0 | 0 | 0 | 0.8 | 0.1 | 0.1 |
| Precipitation hours | 11 | 0 | 18 | 10 | 11 | 8 | 22 | 17 | 0 | 13 | 14 | 13 | 5 | 12 | 8 | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 3 | 1 | 1 |
| Wind speed (m/s) | 30.8 | 15.6 | 39 | 41.9 | 26.7 | 29.3 | 36 | 27.4 | 27.5 | 38.7 | 39.8 | 48.2 | 38.8 | 37.9 | 35.1 | 18.9 | 11.6 | 18.7 | 13.8 | 12.1 | 14 | 10 | 8.6 | 6.3 | 19.4 | 17.2 | 15.6 | 11.5 | 20.6 | 22 | 24.6 |
In January 2023, the highest daytime temperature in Cardiff was 12.8°C.
While the minimum temperature at night dropped to -3.3°C.
The average nighttime and daytime temperatures during January in Cardiff are 2.9°C and 8.3°C respectively.
The precipitation sum in January is about 165 mm.