Direct Answer
Sea surface temperature (SST) is the temperature of the uppermost layer of the ocean. The extra-polar ocean belt excludes the polar seas and covers most of the world’s major marine ecosystems
The temperature thresholds observed are as follows:
| March 1, 2024 | 21.09°C | Previous Record High |
| August 21-22, 2026 | 21.1°C | New All-Time High |