Global Sea Surface Temperatures Reach Record Highs in July 2026

According to a report from Khaosod Online, citing the Copernicus Climate Change Service, global sea surface temperatures (SST) reached an unprecedented average of 20.96°C in July 2026. This figure surpasses the previous record of 20.89°C set in 2023. The data covers non-polar regions between 60 degrees north and south latitude.

Experts attribute this rise partly to the El Niño phenomenon currently active in the tropical Pacific, which is expected to intensify in the coming months. Beyond the oceans, July 2026 was recorded as the second-hottest July in history, with temperatures 1.47°C above pre-industrial averages.

For residents and travelers, these changes carry significant environmental implications. Rising ocean temperatures contribute to thermal expansion, which accounts for approximately one-third of current sea-level rise, potentially impacting low-lying coastal areas and island nations. Furthermore, the warming has triggered severe marine heatwaves, leading to widespread coral bleaching and the disruption of kelp forests and fisheries. Increased evaporation from warmer surfaces also alters local weather patterns. While the immediate environmental impacts are documented, the long-term severity of the ongoing El Niño and its specific duration remain subjects of ongoing scientific observation.