The Isle of Jersey belongs to the Channel Islands and lies in front of the coast of France in the vicinity of Brittany and Normandy. Jersey has a moderate maritime climate with mild winters and not too warm summers. According to the Köppen climate classification the Channel Isle of Jersey has a Cfb climate. Due to its situation in front of the French coast it benefits from the warm gulf stream in the winter months, which causes relatively warm sea-water. A consequence of the warm sea-water is that the air temperatures in the winter months do not easily drop below freezing-point. But the Isle is very sensitive to strong winds and even storms reaching the Channel from a western direction via The Atlantic. Therefore heavy storms with windforce 8, 9 or even 10 occur minimally a few times a year. In the summer months however the chance of these storms is small.
Jersey has an average annual 24 hour temperature of 11,6 degrees centigrade. This is comparable with the south coast of England. On a yearly basis a little fewer than two-thousand hours of sunshine are registered. Particularly the summer months are reasonably sunny with an average of 8 sunny hours a day. Many tropical destinations do not reach this score. In the winter months it is a few degrees warmer than in the Netherlands. Also in respect of the French continent the winters in Jersey pass with considerably less frost and snow. During the daytime the temperature seldom drops below freezing-point and at night it is often limited to slight night frost if it gets really cold. In the summer during the daytime the temperature is approximately twenty degrees. On an average no super weather for a sunny holiday, but excellent weather to enjoy the Isle. During warmer periods temperatures in the summer can rise to about or even a little above 25 degrees. However tropical values of thirty degrees or even more are not registered that often. With 175 rainy days per year Jersey cannot be called distinctly wet or dry. In the winter months there is on an average fairly much rain. In the months of December, January and February more than a hundred millimeters per month are registered based on averages of more than one year. On the other hand the summers are rather dry. In the height of summer there is on an average only some forty to fifty millimeters per month with which Jersey is relatively dry.
The figures below are based on registered weather information of more than one year and are an average for Jersey.
Remark: locally slight deviations may occur.
Climate figures come in handy but do not offer a total impression of the climate and the possible weather circumstances within a particular period. You cannot often find in figures how big the chance is of wintry weather, (extreme) heat or hurricanes. Therefore we monthly offer useful extra climate information.