St Martin Guernsey Weather & Climate: Best Time to Visit

In St Martin Guernsey, seasonal changes bring about a moderate variation in temperatures. Average daytime temperatures reach a pleasant 19°C (66°F) in August. In February, the coolest month of the year, temperatures drop to a chilly 11°C (52°F).

At night, temperatures range from around 16°C (61°F) in August to 7°C (45°F) in February.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, St Martin Guernsey has a moderate amount of precipitation, averaging 963 mm (38 in) of rainfall annually. St Martin Guernsey can be quite wet during November, receiving approximately 131 mm (5.2 in) of precipitation over 18 rainy days.

In contrast, during the driest month (July), you will experience much drier conditions, with 41 mm (1.6 in) of precipitation spread across 10 rainy days. For more details, please visit our St Martin Guernsey Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

St Martin Guernsey can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 8.4 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.0 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine