Saint Helier Jersey Weather & Climate: Best Time to Visit

The climate in Saint Helier Jersey experiences moderate temperature changes, with mild shifts between seasons. Average daytime temperatures reach a pleasant 20°C (68°F) in August. In February, the coolest month of the year, temperatures drop to a chilly 10°C (50°F).

At night, temperatures range from around 17°C (63°F) in August to 7°C (45°F) in February.

Check out our detailed temperature page for more information.

Temperature ranges by month

Saint Helier Jersey is known for its substantial rainfall, with annual precipitation reaching 1061 mm (42 in). Saint Helier Jersey can be quite wet during December, receiving approximately 141 mm (5.6 in) of precipitation over 19 rainy days.

In contrast, during the driest month (July), you will experience much drier conditions, with 51 mm (2 in) of precipitation spread across 10 rainy days. For more details, please visit our Saint Helier Jersey Precipitation page.

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

The average number of days each month with precipitation

Saint Helier Jersey 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