Oceans hit 21.1°C — hottest sea temps ever measured
Global sea surface temperatures hit 21.1°C (70°F) on Aug. 21-22, 2026, topping the March 2024 record and arriving in August, far outside the seasonal peak. Copernicus attributes the anomaly to a supersized El Niño layered on human-caused warming, with oceans expected to heat further until the El Niño peaks between November and January. The result: more acidic, oxygen-poor seas, stronger storms, larger storm surge and amplified heat waves.
Source: winnipegfreepress.com · greeleytribune.com