Average temperature in January is 9.3 °C
Average daytime temperature is 10.2 °C
Average night temperature is 8.2 °C
Absolute maximum temperature: 13 °C
Absolute minimum temperature: 4.3 °C
Number of sunny days: 5
Number of rainy days: 26
Number of snow days:
Precipitation sum: 128 mm
* Weather data for Saint Peter Port Guernsey 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 | 12 | 10.9 | 12.7 | 13 | 12.3 | 12.4 | 12 | 10.5 | 11 | 13 | 12.1 | 12.2 | 11.5 | 12.7 | 9.2 | 8.8 | 7.1 | 7.6 | 7.9 | 8.4 | 8 | 7.2 | 7.8 | 8 | 10.2 | 9.4 | 8.3 | 7.9 | 10 | 10.6 | 10.7 |
| Apparent max temperature | 9.2 | 7.6 | 5.9 | 8 | 8.1 | 8.3 | 5.6 | 2.7 | 4.1 | 6.5 | 6.5 | 5.6 | 6.1 | 5.7 | 2.3 | 4 | 1.4 | 0.4 | 4.2 | 4.7 | 2.7 | 4.2 | 2.4 | 2.6 | 6.5 | 2.1 | 2 | 3.4 | 5.7 | 6.9 | 6.5 |
| Mean temperature | 11.5 | 10.2 | 11.8 | 12.7 | 11.9 | 11.8 | 11.3 | 10 | 9.7 | 11.9 | 11.4 | 11.9 | 11.1 | 10.9 | 8.3 | 7.6 | 5.6 | 6.9 | 7.3 | 7.9 | 7 | 6.2 | 6.9 | 7.5 | 7.5 | 8.1 | 7.6 | 6.8 | 8.8 | 9.5 | 9.9 |
| Apparent mean temperature | 4.5 | 3.7 | 4.3 | 4.9 | 5.3 | 5 | 1.3 | -0.8 | -1.8 | 2 | 1.8 | 2.2 | 0.6 | -0.2 | -2.9 | -7.6 | -4.1 | -2.8 | 0.8 | 2 | 0.7 | 1.1 | 1.2 | 1.6 | 1.4 | -0.2 | 0.1 | 1 | 3.7 | 3.9 | 3.6 |
| Minimum temperature | 10.8 | 9.4 | 10.9 | 12.4 | 11.4 | 11 | 9.6 | 9.3 | 8.4 | 10 | 10.5 | 11.2 | 10.6 | 8.4 | 7.1 | 5.9 | 4.3 | 5.6 | 6.9 | 7.3 | 5.8 | 5.7 | 6.2 | 6.8 | 5.7 | 7.4 | 6.7 | 6.2 | 6.8 | 8.4 | 9 |
| Apparent min temperature | 6.5 | 5.7 | 4.9 | 6.4 | 6.9 | 6.6 | 3.3 | 1.2 | 0.7 | 5 | 3.5 | 3.7 | 3.2 | 3.4 | -0.9 | -0.1 | -0.9 | -0.5 | 2.3 | 3.2 | 1.9 | 2.8 | 1.7 | 2.1 | 3.5 | 0.7 | 1.1 | 1.7 | 4.5 | 5.3 | 4.9 |
| 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) | 8.2 | 8.3 | 8.3 | 8.3 | 8.3 | 8.4 | 8.4 | 8.4 | 8.4 | 8.5 | 8.5 | 8.5 | 8.6 | 8.6 | 8.6 | 8.7 | 8.7 | 8.7 | 8.8 | 8.8 | 8.9 | 8.9 | 8.9 | 9 | 9 | 9.1 | 9.1 | 9.2 | 9.2 | 9.3 | 9.3 |
| Sunshine duration (h) | 0 | 6.3 | 0 | 0.1 | 2.5 | 2.2 | 4.8 | 4 | 6.9 | 0 | 4.3 | 0 | 5.2 | 0 | 5 | 7.3 | 0 | 4.6 | 5 | 7.3 | 7.2 | 5 | 6 | 0.2 | 6 | 5.5 | 2.3 | 3.5 | 1 | 7.4 | 3.3 |
| Precipitation (mm) | 7.2 | 2.5 | 10.3 | 4.3 | 0.1 | 5.4 | 5.4 | 8.6 | 7.8 | 7.6 | 1.8 | 4.9 | 0.9 | 11 | 13.5 | 4.5 | 18.9 | 3.4 | 0.9 | 0.1 | 0 | 0 | 0 | 0 | 5.9 | 1 | 0.5 | 0 | 0.1 | 0.6 | 0.3 |
| Precipitation hours | 10 | 12 | 15 | 19 | 1 | 8 | 12 | 21 | 12 | 16 | 11 | 18 | 3 | 22 | 16 | 9 | 20 | 16 | 6 | 1 | 0 | 0 | 0 | 0 | 7 | 8 | 5 | 0 | 1 | 3 | 2 |
| Wind speed (m/s) | 48.4 | 36.2 | 52.8 | 54.8 | 44.5 | 48.1 | 59.4 | 63 | 63.2 | 56.8 | 59.2 | 66.2 | 60.1 | 60.3 | 62.9 | 84.2 | 47.7 | 47.8 | 32.2 | 24.5 | 25.3 | 16.8 | 30.8 | 31.1 | 41 | 45.5 | 38.1 | 26.7 | 34.9 | 29.1 | 31.3 |
In January 2023, the highest daytime temperature in Saint Peter Port was 13°C.
While the minimum temperature at night dropped to 4.3°C.
The average nighttime and daytime temperatures during January in Saint Peter Port are 8.2°C and 10.2°C respectively.
The precipitation sum in January is about 128 mm.