Weather Data Reveals Last Year as Seventh Hottest on Record

Jersey recorded its seventh-hottest year on record in 2024, according to newly released weather data. However, the island experienced cooler temperatures compared to the previous two years.

Jersey Met reported an average annual temperature of 12.94°C, which was 0.65°C above the 30-year average from 1991 to 2020. Despite this, the year was notably cooler than the record highs seen in 2022 and 2023.

The island’s four hottest years have all occurred within the past 11 years, with 2022 holding the highest recorded average temperature at 13.56°C.

Overnight temperatures in 2024 deviated further from the historical average, measuring 0.81°C above normal, while daytime temperatures were 0.32°C higher than usual. A significant indicator of this warming trend was the low number of ground frosts—just nine throughout the year, compared to the long-term average of nearly 46.

Other climate patterns remained relatively consistent, with both sunshine and rainfall levels exceeding the average by around 2%.

Jersey Met also released data for January 2025, confirming it as the wettest-ever January recorded at the weather bureau’s headquarters. A total of 208.2mm of rain fell during the month, surpassing the previous record of 190.9mm set in 2016 and more than doubling the 30-year average of 95.2mm.

In contrast to 2024’s annual warmth, January was colder than usual, with an average temperature of 6°C—one degree below the long-term norm. However, the month was also slightly sunnier than recent years, with 87.3 hours of sunshine, nearly 20% above the 1991–2020 average.

Jersey Met continues to monitor weather trends, highlighting the ongoing shifts in the island’s climate.