The Isle of Man experienced one of its warmest years on record in 2025, according to the Ronaldsway Meteorological Office’s Annual Observations Report.
The average 24-hour mean temperature reached 11.27°C, nearly 1°C above the long-term average, making 2025 the second warmest year recorded at Ronaldsway since measurements began in 1947.
The year began with a cold, wintry January, including snowfall and severe damage caused by Storm Eowyn, which brought gusts of up to 70 knots.
Conditions Over the Year
Conditions quickly shifted, however, with spring becoming the warmest and sunniest on record, and the third driest, creating challenges for agriculture due to low rainfall.
May was both the warmest and sunniest ever recorded.
Summer continued the trend, with consistently warm temperatures making it the warmest summer on record, aided by unusually high sea temperatures.
Autumn then brought a sharp contrast, with unsettled, wet and windy conditions, though temperatures remained above average until late December.
Rainfall for the year was slightly above average, while sunshine totals reached 1,762 hours, the eighth highest on record.
The report notes these findings align with broader climate trends, highlighting measurable local impacts of long-term global warming on the Isle of Man.
