Jersey, where it is located

The climate of Jersey is oceanic, cool and humid throughout the year. Jersey is the largest of the Channel islands, which are found a short distance from the French coast of Lower Normandy, and belong to Great Britain. The main islands are Jersey, Guernsey and Alderney. The climate of Jersey is very similar to that of the neighboring island of Guernsey, although it is slightly more exposed to both cold and heat, since it is closer to the continent.
The average temperature ranges from 6 °C (43 °F) in February to 17.5 °C (63.5 °F) in August. Here are the average temperatures.
Jersey - Average temperatures
Min (°C)44569121414131185
Max (°C)881012161820211915129
Min (°F)393941434854575755524641
Max (°F)464650546164687066595448

Precipitation amounts to 865 millimeters (34 inches) per year. The relatively wettest season is autumn, the least rainy is summer. Here is the average precipitation.
Jersey - Average precipitation

Winter, from December to February, is quite cold: temperatures are not so low, but wind and humidity can increase the sensation of cold. The sky is often cloudy, and rainfall is frequent. Sometimes, intense Atlantic depressions can cause wind storms.
Snowfalls are relatively rare and not abundant; usually, cold spells are not intense and do not last long. However, the cold record is -9 °C (16 °F).

In spring, from March to May, the temperature slowly rises, and Atlantic fronts become a bit less frequent. In May, it is often still quite cold, especially in the first half of the month.

Summer, from June to August, is cool, with quite frequent rains, but also with a bit of good weather. Hot days are rare: the temperature may never reach 25 °C (77 °F) for an entire month. However, the highest records are 36 °C (97 °F), set in July 2019, and 36 °C (95 °F), set in August 2003.

Autumn, from September to November, is gray, cloudy and rainy, and with each passing week, it gets progressively colder. In November, the wind is often moderate or strong.

Mont Orgueil castle

The sun in Jersey is rarely seen from October to March, while from April to September, it shines for an acceptable number of hours. In one year, there are 1,900 hours of sunshine. Here are the average sunshine hours per day.
Jersey - Sunshine

The sea is cold all year round, however, from July to September the water temperature reaches 17/18 °C (62/64 °F). Here are the average sea temperatures.
Jersey - Sea temperature
Temp (°C)1099101214171817151312
Temp (°F)504848505457636463595554

Best Time

The best time to visit Jersey runs from June to mid-September. July and August are the warmest months, or the least cool, however, it's better to bring a sweatshirt and a light jacket also in midsummer.