Last updated: March 2, 2024
The weather in St Martin, Guernsey, during December is characterized by an average temperature of 11°C (51°F). Highs can soar to 14°C (57°F), while lows may dip to 6°C (43°F). Typically, the humidity level in St Martin throughout December hovers around 90%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In December, St Martin averages 163 mm (6.4 inches) of rainfall, typically over the course of 21 rainy days. The month enjoys an average of 8 hours 13 minutes of daylight, with the sun shining for approximately 4 hours 11 minutes each day. Additionally, there is a 26% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In December, the UV Index in St Martin reaches a maximum of 1, indicating a level of Low exposure. The most intense UV radiation typically occurs between 08:00 and 10:00, during which unprotected skin may burn in as little as 45 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 |
| Exposure | Low | ||||||||||||
| Time to burn | 45 min | ||||||||||||