Overview
- Copernicus reports January–November 2025 temperatures averaged about 1.48°C above the 1850–1900 baseline.
- November registered roughly 1.54°C above preindustrial levels, ranking as the third-warmest November with pronounced warmth in northern Canada and the Arctic Ocean.
- Analysts say 2025 is virtually certain to finish as the second- or third-hottest year on record, with 2024 still the hottest.
- A weak, short-lived La Niña failed to cool global conditions enough to counter the long-term warming trend.
- Samantha Burgess of Copernicus and the WMO warn the 2023–2025 three-year average is on track to exceed 1.5°C and that current trajectories do not meet Paris Agreement targets.