Record Ocean Heat in June as Global Sea Temperatures Hit Unprecedented Levels

International Desk: PNN

The world’s oceans experienced the hottest June on record, according to the European Union’s Copernicus Marine Service. Scientists warn that temperatures may rise further in coming months due to climate change and El Niño conditions.

The report states that the global average sea surface temperature reached 21.0°C in June 2026, surpassing previous records from 2023 and 2024.

Most oceans experienced above-average temperatures throughout the first half of the year. Marine heatwaves affected about 82% of global ocean areas.

The most affected regions include the Mediterranean Sea, central North Atlantic, and equatorial Pacific, according to scientists.

Experts warn that a stronger El Niño event could further increase global temperatures in late 2026 and beyond, bringing extreme weather events such as floods, droughts, and wildfires.

Ocean warming is also increasing atmospheric moisture, intensifying storms and raising sea levels while threatening marine ecosystems, especially coral reefs.

The UN has also warned that the oceans are in a “deep crisis” due to rising temperatures and sea levels.

Scientists stress urgent climate action is needed to prevent further extreme and unpredictable global weather changes.