Ocean surface temperature hits all-time record of 20.98°C in June 2025

Europe's Copernicus climate observatory recorded the highest-ever average ocean surface temperature in June 2025 at 20.98°C, surpassing the previous record of 20.89°C set in June 2024. The warming is driven by the El Niño phenomenon and ongoing climate change. Scientists warn that further records are expected in the coming months.

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More on this topic

💡 Did You Know Ocean Surface Temperatures Hit Record High in June as El Niño Strengthens Live Science · 26d ago 🔬 Science Scientists warn "Godzilla El Niño" could make 2027 the hottest year on record Vox · 11d ago 🔬 Science World's oceans hit record 21°C average surface temperature in June 2026 France 24 · 27d ago