April 2025 has been recorded as the second warmest on record, continuing a trend of months exceeding a global temperature rise of +1.5°C compared to pre-industrial times, according to the Copernicus Climate Change Service.
Globally, the average air temperature in April was 14.96°C, which is 0.60°C higher than the average for April in the period 1991-2020. April 2025 was 1.51°C above the estimated average for 1850-1900, marking what is likely the 21st month out of the last 22 with temperatures more than +1.5°C above the average for the pre-industrial era.
The Paris Agreement aims to keep global warming well below 2°C, ideally limited to 1.5°C. This is a long-term goal, and a temporary exceedance over several months does not mean the more ambitious targets are out of reach.
In Europe, the average air temperature in April was 9.38°C, which is 1.01°C above the 1991-2020 average, making April 2025 the sixth warmest month ever recorded on the continent.
Globally, sea surface temperatures also remained high, with an average of 20.89°C, making it the second warmest April on record, following April 2024’s record.
The year 2024 was the warmest on record globally and the first calendar year during which the global average temperature exceeded the warming threshold of +1.5°C above pre-industrial levels, with an average temperature of 15.10°C, which was 1.6°C above that of the pre-industrial era.
