Average temperature in March is 9.3 °C
Average daytime temperature is 10.3 °C
Average night temperature is 8.4 °C
Absolute maximum temperature: 12.7 °C
Absolute minimum temperature: 4.5 °C
Number of sunny days: 2
Number of rainy days: 29
Number of snow days:
Precipitation sum: 110 mm
* Weather data for St Martin Guernsey is based on climate observations for 2023 year
| March (°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 | 7.9 | 8.6 | 7.7 | 7.6 | 6.4 | 8.3 | 8.6 | 11.1 | 11 | 10.2 | 10.8 | 11.6 | 11.9 | 10.4 | 10.4 | 11.2 | 11.4 | 10.4 | 10 | 10.9 | 11.5 | 12 | 11.4 | 10.4 | 10.6 | 10.2 | 10.1 | 11.5 | 12.7 | 11.8 | 11.2 |
| Apparent max temperature | 1.6 | 2.6 | 1.9 | 2 | 3.2 | 2.5 | 5.6 | 5.2 | 5.4 | 3.8 | 6.4 | 6 | 5.1 | 3.3 | 6.1 | 7.5 | 7.6 | 9.1 | 6.5 | 7.7 | 6.5 | 7 | 5.6 | 3.8 | 7 | 6 | 7.6 | 7.4 | 8.3 | 6.9 | 2.8 |
| Mean temperature | 6.8 | 7.4 | 7.2 | 6.8 | 5.8 | 7.4 | 7.7 | 10.4 | 10.5 | 7.3 | 7.7 | 10.6 | 11 | 8.7 | 9.4 | 10.3 | 10.6 | 9.7 | 9.4 | 10.1 | 10.6 | 11.2 | 10.8 | 9.9 | 10.2 | 9.5 | 9.2 | 10 | 11.7 | 11.2 | 10.7 |
| Apparent mean temperature | -2 | 0.7 | 0.1 | 1 | 0.2 | 1.1 | 0.7 | 2 | 1.1 | -6.4 | -2 | 4.3 | 2.3 | -1.2 | 3.8 | 4.3 | 5.3 | 5.2 | 2.9 | 4.8 | 4.3 | 3.4 | 3.2 | -0.1 | 0.7 | 1 | 5.4 | 1.1 | 5.4 | 2.7 | -0.1 |
| Minimum temperature | 5.5 | 6.8 | 6.3 | 6.4 | 5.2 | 6.4 | 7.1 | 9 | 9.9 | 5.3 | 4.5 | 9.7 | 9.9 | 7.7 | 8.5 | 9.5 | 9.9 | 9.2 | 8.5 | 9.5 | 9.9 | 10.6 | 9.9 | 9.6 | 9.3 | 8.5 | 8.6 | 8.4 | 11 | 10.7 | 10.5 |
| Apparent min temperature | -0.2 | 1.6 | 1.2 | 1.5 | 1.9 | 1.9 | 2.5 | 3.6 | 3.8 | -0.4 | 2.2 | 5.2 | 3.9 | 1.2 | 4.6 | 5.6 | 6.2 | 7.1 | 4.8 | 5.9 | 5.4 | 4.9 | 4.4 | 2 | 3.6 | 4.3 | 6.7 | 4.5 | 6.9 | 4.6 | 1.4 |
| March | 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) | 11 | 11 | 11.1 | 11.2 | 11.2 | 11.3 | 11.3 | 11.4 | 11.5 | 11.5 | 11.6 | 11.7 | 11.7 | 11.8 | 11.8 | 11.9 | 12 | 12 | 12.1 | 12.1 | 12.2 | 12.3 | 12.3 | 12.4 | 12.5 | 12.5 | 12.6 | 12.6 | 12.7 | 12.8 | 12.8 |
| Sunshine duration (h) | 2.6 | 6.6 | 4.5 | 0.5 | 2.3 | 5.3 | 2.6 | 1.9 | 2.1 | 1.6 | 1.7 | 0.4 | 10.2 | 10.7 | 2.1 | 7.3 | 8.4 | 10.8 | 10.9 | 0.4 | 9.5 | 2.5 | 3 | 10.4 | 10.3 | 10.5 | 11.1 | 1.2 | 5.4 | 8.9 | 9.1 |
| Precipitation (mm) | 0.2 | 0 | 0.1 | 0.5 | 0.4 | 0.2 | 8.6 | 8.4 | 12.5 | 6.8 | 7 | 5.2 | 3.6 | 0.5 | 0.6 | 2 | 1 | 0.2 | 0 | 2.3 | 0.8 | 7.4 | 8.8 | 4 | 9.2 | 1.7 | 0.6 | 4.7 | 0.7 | 6.3 | 5.3 |
| Precipitation hours | 2 | 0 | 1 | 5 | 4 | 2 | 21 | 17 | 18 | 15 | 9 | 7 | 5 | 5 | 3 | 5 | 5 | 2 | 0 | 5 | 4 | 15 | 16 | 13 | 7 | 3 | 3 | 10 | 7 | 9 | 10 |
| Wind speed (m/s) | 37.9 | 31.7 | 33.4 | 27.2 | 19.2 | 33.4 | 35.5 | 59.6 | 62.1 | 83.8 | 39 | 48.9 | 59.4 | 59.6 | 37.8 | 35.1 | 36.9 | 29.6 | 29.8 | 31.9 | 41 | 49.1 | 52.4 | 61.7 | 55.4 | 57.6 | 27.4 | 45.5 | 44.5 | 58.3 | 69.9 |
In March 2023, the highest daytime temperature in St Martin was 12.7°C.
While the minimum temperature at night dropped to 4.5°C.
The average nighttime and daytime temperatures during March in St Martin are 8.4°C and 10.3°C respectively.
The precipitation sum in March is about 110 mm.