The World Meteorological Organization (WMO) has released its State of the Global Climate report for 2025, confirming that the past decade is the hottest on record. The period from 2015 to 2025 saw temperatures averaging about 1.43°C above the 1850-1900 average.
This extreme heat was accompanied by intense weather events, such as heavy rainfall and tropical cyclones, which caused widespread disruption and devastation. The ocean continued to warm and absorb massive amounts of carbon dioxide, equivalent to 18 times the annual human energy use each year for the past two decades.
The report highlights the vulnerability of our economies and societies due to these extreme weather impacts. Arctic sea ice extent was at or near a record low, while Antarctic sea ice extent was its third-lowest on record. Glaciers continued to melt unabated, further exacerbating climate change.
For the first time, the WMO includes Earth’s energy imbalance as one of the key climate indicators, emphasizing the urgent need for action to mitigate climate change.
Source: https://wmo.int/publication-series/state-of-global-climate/state-of-global-climate-2025