Overview
- World Weather Attribution reported that the 2023–2025 global average temperature exceeded the Paris Agreement’s 1.5°C benchmark for the first time.
- Despite a cooling La Niña, scientists say continued burning of coal, oil and gas kept 2025 exceptionally warm.
- WWA cataloged 157 of the year’s most severe disasters and conducted detailed studies on 22, finding heat waves were the deadliest.
- Several 2025 heat waves were estimated to be about 10 times more likely because of human-driven warming, according to the analyses.
- The report cites rapid-intensification events like Hurricane Melissa and highlights a policy gap after UN talks in Brazil ended without a fossil-fuel phaseout plan, even as more adaptation funding was pledged.