State of the Global Climate 2025

The State of the Global Climate is an annual WMO flagship report. It provides authoritative information on the state of the climate system by updating key observed climate indicators and presenting selected high-impact weather and climate events. It complements the work of the Intergovernmental Panel on Climate Change (IPCC) and other institutions by delivering a timely, consolidated global assessment of the year's climate conditions. The report is produced by WMO in collaboration with National Meteorological and Hydrological Services, international data centres, leading climate research institutions and United Nations partners.