January 2025: Warmest Month Globally, Second Warmest in Europe

Global temperature reached a record 13.23°C, 1.75°C above pre-industrial levels, surpassing the 1991-2020 baseline by 0.79°C, says Copernicus

January 2025: Warmest Month Globally, Second Warmest in Europe

According to data from the Copernicus Climate Change Service (ERA5 dataset), January 2025 was the warmest January ever recorded globally, with an average surface air temperature of 13.23°C, making it 0.79°C warmer than the 1991-2020 average. The month was also 1.75°C warmer than pre-industrial levels (1850-1900), continuing a concerning warming trend.

This marks the 18th month in a 19-month period where global-average surface temperatures exceeded 1.5°C above pre-industrial levels. Among these months, 12—spanning September 2023 to April 2024, and October 2024 to January 2025—exceeded 1.58°C, with some nearing 1.78°C above pre-industrial temperatures. While some months in this period were slightly closer to the 1.5°C threshold, the overall trend highlights persistent and alarming temperature increases.

In Europe, January 2025 was the second-warmest January on record, with an average temperature of 1.80°C2.51°C above the 1991-2020 average. It was only 0.13°C cooler than January 2020, which remains the warmest January for the continent. It also surpassed January 2007, now the third warmest January, by 0.10°C.

While European temperature anomalies tend to be more variable, the continent’s dense observational network ensures high data reliability. The ongoing trend of record-breaking temperatures underscores the growing impacts of climate change and the urgency for climate action at both regional and global levels.

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