The average global sea surface temperature reached a record high for June, hitting 20.86°C. This new peak was recorded on June 21, surpassing the previous record set in 2024. The data was published by the Copernicus Climate Change Service, based on information from satellites, ships, and ocean buoys.

Similar figures were reported by the Copernicus Marine Service, which recorded an ocean surface temperature of 21°C on the same day—also a record high for June.

Experts attribute the anomalous warming of ocean waters to the influence of the El Niño climate phenomenon, during which water temperatures in the equatorial Pacific rise above normal levels. At the same time, scientists note that anthropogenic climate change continues to play a significant role.

Carlo Buontempo, Director of the Copernicus Climate Change Service, stated that current figures could indicate the start of a new phase of climate change. According to him, given current ocean temperatures and the development of El Niño, new temperature records are possible in the coming months.

Experts warn that further ocean warming could lead to more intense heatwaves, more powerful tropical storms, and an increased risk of heavy rainfall and flooding. Furthermore, warming threatens marine ecosystems: it causes mass coral bleaching, affects the survival of marine organisms, and accelerates global sea-level rise.