WMO Says 2015–2025 Was the Hottest Decade as Earth Stored Record Heat in 2025

Overview

• The World Meteorological Organization, which released its State of the Global Climate 2025 report on Monday, said 2015–2025 contained the 11 warmest years on record.
• Scientists report a record Earth energy imbalance in 2025, which means the planet absorbed more solar energy than it radiated back to space.
• About 91% of this excess heat entered the oceans, which set a new high for heat content in 2025 as the warming rate more than doubled compared with 1960–2005.
• Global temperature in 2025 was about 1.43°C above the 1850–1900 average, placing the year second or third warmest, while 2024 remains the hottest.
• Ice in Greenland and Antarctica lost mass, Arctic sea ice stayed near record lows, and UN leaders called a climate emergency as extreme weather killed thousands and caused billions in losses.