Global Ocean Surface Temperature Sets New All-Time High

On August 22, 2026, the average sea surface temperature reached 21.10°C, surpassing the previous record of 21.09°C set in March 2024, according to the Copernicus Climate Change Service. The record is attributed to ongoing planetary warming and an exceptionally strong El Niño, which raises Pacific Ocean temperatures. Scientists warn that continued fossil fuel use will drive further ocean heating, threatening sea-level rise, weather stability, and marine ecosystems.