Copernicus: January 2025 was the warmest on record globally, despite an emerging La Niña
Global Temperatures
· January 2025 was the warmest January globally, with an average ERA5 surface air temperature of 13.23°C, 0.79°C above the 1991-2020 average for January.
· January 2025 was 1.75°C above the pre-industrial level and was the 18th month in the last nineteen months for which the global-average surface air temperature was more than 1.5°C above the pre-industrial level.
· The last 12-monthsperiod (February 2024 – January 2025) was 0.73°C above the 1991-2020 average, and 1.61°C above the estimated 1850-1900 average used to define the pre-industrial level.
*Datasets other than ERA5 may not confirm the 18 months above 1.5°C highlighted here, due to the relatively small margins above 1.5°C of ERA5 global temperatures observed for several months and differences among the various datasets.