What changed
2026-07-26 17:14 UTC → 2026-07-27 01:19 UTC ·
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Global ocean temperature records 2026 – July peak
In June 2026, 2026 saw global sea‑surface temperatures hit reach a new high of 20.98 °C, surpassing followed by a prolonged period of average ocean temperatures near 21 °C that lasted over 50 consecutive days—the longest streak on record. By late July, the warming intensified: global average sea‑surface temperature rose to roughly 21.03 °C, breaking the previous June record by 0.08 °C, and coinciding with an atmospheric temperature rise peaked at about 21.11 °C on 21 July, driven by a strong El Niño event. Regional analyses highlighted the broader impact of +0.46 the heat. Long‑term observations of Turkey’s seas showed air and water temperatures climbing from 12.7 °C above in the 1991‑2020 baseline. 1970‑80s to 14.4 °C in 2014‑25. Mediterranean sea‑surface temperatures rose by about 1.3 °C to 22.3 °C, while the Aegean and Marmara seas warmed 0.8 °C and 2.2 °C respectively; similar trends were noted in the Black Sea. Scientists linked link the unprecedented sustained oceanic heat to ongoing greenhouse‑gas emissions and an emerging the amplifying effect of El Niño event, Niño, warning that the combination could intensify tropical cyclones, stress marine ecosystems and contribute to sea‑level rise. By late July, the heat persisted, with the planet’s hotter oceans maintaining an average temperature around 21 °C for more than 50 consecutive days—the longest such streak on record. The prolonged warmth reflects a substantial accumulation of excess heat in the climate system, reinforcing concerns that increase the Earth is operating on a much hotter baseline than in previous decades and posing growing risks to weather likelihood of severe heatwaves, altered precipitation patterns, ecosystems heightened tropical‑cyclone activity, sea‑level rise, and human activities added stress on marine ecosystems worldwide.