Oceans Hit Record June Heat in 2026 as El Niño Signals Higher Climate Volatility
EU Copernicus monitoring reported the warmest June sea-surface temperatures on record in 2026, with marine heatwaves affecting roughly 82% of the global ocean. Scientists cited by the source warn that a potentially strong El Niño could drive further records and increase risks of extreme weather, sea-level rise, and ecosystem stress into 2027.