World’s oceans hit hottest temperature on record in August
Average sea surface temperature outside polar regions was 21.1C on Saturday, latest data finds
TL;DR
- World's oceans recorded their hottest temperature ever on Saturday at 21.1C.
- Rising marine heat is a key indicator of the climate crisis, with over 90% of trapped CO2 heat entering oceans.
- Hotter oceans contribute to sea level rise, extreme storms, and marine heatwaves that harm sea life.
- The current heat spike is intensified by a developing El Niño event.
- The record is significant as ocean temperatures are typically highest in March/April.
- Warmer oceans are less efficient at absorbing CO2, weakening a natural buffer against global heating.
- Urgent actions include rapidly reducing fossil fuel emissions and protecting marine ecosystems.