Jersey Sees Record Heat and Sunshine in 2025

Jersey recorded 2025 as its fourth hottest and fourth sunniest year, according to the Jersey Met Office. The average annual temperature was 13.3°C (56F), nearly a degree warmer than the long-term 30-year average. This warmth contributed to the island experiencing 2,383 hours of sunshine over the year.

Forecasters noted that both spring and June were the warmest since records began, with June seeing the year's highest temperature of 33.4°C (92F) and several other days exceeding 30°C (86F). This period also included a 'tropical night' where nocturnal temperatures remained above 20°C (68F).

Additionally, sea temperatures averaged as the second warmest during the summer months. The year also saw no air frost and a significantly lower number of ground frosts than average, with the lowest recorded temperature being just above freezing. Despite January being exceptionally wet, eight months had below-average rainfall, contributing to a yearly total of 823.6mm (82cm), nearly 95mm below the long-term average.

Head of meteorology Paul Aked cautioned that warmer temperatures mean the atmosphere can hold more moisture, potentially leading to more extreme weather events. He stressed the importance of preparing for such possibilities as global temperatures continue to rise.