Overview
- WWA cataloged 157 high-impact events in 2025 and conducted detailed attribution on 22, concluding human-caused warming intensified or increased the likelihood of 17.
- Heat waves ranked as the deadliest climate hazard this year, with some now nearly ten times more likely than a decade ago.
- Major climate agencies reported 2025 among the hottest years on record, confirming that the past three years were the warmest in the instrumental record.
- Lethal storms and cyclones inflicted severe losses, including more than 1,700 deaths across parts of Asia and heavy damage from Hurricane Melissa in the Caribbean.
- Researchers caution that adaptation is nearing its limits and call for deep emissions cuts and greater support for vulnerable communities, noting global talks produced no explicit fossil-fuel phaseout.