Saint Helier Weather

Under the Köppen climate classification, St. Helier has an oceanic climate, however, it exhibits characteristics of a mediterranean climate, with a dry summer trend. St. Helier has cool, wet winters and mild summers with moderate rainfall. Summers on the island tend to be sunnier, but generally cooler than Southern England. January is the coldest month with an average high of 9.5 °C (49.1 °F), and a low of 4 °C (39 °F). August is the warmest month, with an average high of 21 °C (70 °F), and a low of 14 °C (57 °F). December is the wettest month with 111 mm (4.37 in) of rain, and July is the driest month with 37 mm (1.46 in). Snow is rare. Average Sunshine hours are around 1930 annually. In 2016, St. Helier reported the highest temperature in the United Kingdom for that year, reaching 35.2 °C (95.4 °F) on 19 July. St. Helier also set the record for the most sunshine ever reported in one calendar year in the British Isles, at 2340 hours in 1893.