The ice lost from glaciers in 2025 would have filled five Olympic-sized swimming pools every second that year, according to the latest report from the United Nations’ World Meteorological Organization (WMO).

The agency estimated that the world’s glaciers lost more than 400 billion tonnes of ice in 2025. Global records of glacier mass loss go back to 1975.

The agency estimated that the world’s glaciers lost more than 400 billion tonnes of ice in 2025. Global records of glacier mass loss go back to 1975.Global sea level reached its highest point on record, and sea surface temperatures set monthly records in 2026, the WMO said.UN secretary-general António Guterres warned that the world had entered a new age of climate extremes, with those who contributed least to the climate crisis suffering the worst effects.“A supersized El Niño is colliding with a planet already superheated by manmade climate change. Climate records keep falling.“The human costs keep rising. And those least responsible are suffering first and worst.“Leaders must get serious by cutting emissions faster, accelerating a just transition from fossil fuels and delivering the finance and protection vulnerable countries need,” he said in a WMO statement on Nov 9 accompanying its latest climate report.The WMO presented its update on global temperatures yesterday on the opening day of COP31, the UN climate conference in Antalya, Türkiye.