2025 one of three warmest years on record: WMO
The World Meteorological Organization (WMO) has confirmed that 2025 was one of the three warmest years on record, continuing a streak of extraordinary global temperatures over the past decade.
- The global average surface temperature in 2025 was 1.44 Celsius (with a margin of uncertainty of ± 0.13 C) above the 1850-1900 average, according to WMO’s consolidated analysis of eight datasets.
- Two of these datasets ranked 2025 as the second warmest year in the 176-year record, and the other six ranked it as the third warmest year.
- The past three years from 2023 to 2025, marked the three warmest years in all eight datasets, while the past 11 years, 2015-2025, are the 11 warmest years in all eight datasets.
“The year 2025 started and ended with a cooling La Niña and yet it was still one of the warmest years on record globally because of the accumulation of heat-trapping greenhouse gases in our atmosphere,” said WMO Secretary-General Celeste Saulo in a news release. “High land and ocean temperatures helped fuel extreme weather — heatwaves, heavy rainfall and intense tropical cyclones, underlining the vital need for early warning systems,” she added.
Source: WMO
“WMO’s state of the climate monitoring, based on collaborative and scientifically rigorous global data collection, is more important than ever before because we need to ensure that Earth information is authoritative, accessible and actionable for all,” said Saulo.
