The previous record was set in 2024, Earth’s hottest year since record-keeping began in 1880

Record global sea surface temperature reaches 21.1°C amid strengthening El Niño, signaling increased ocean stress and climate impact risks.

Average sea surface temperature outside polar regions was 21.1C on Saturday, latest data finds

The world’s oceans hit 21.10 degrees Celsius last Saturday, breaking a record set in 2024