Carlo Buontempo
researcher
- Jul 1
Global sea surface temperatures reach record high for June, surpassing 2023 and 2024 levels
The global sea surface temperature reached 20.86°C on June 21, exceeding records from the previous two years and signalling a warming trend amplified by an emerging El Niño.

- Jul 1
Global ocean temperatures reach record high for June, Copernicus warns of severe weather and ecosystem strain
Daily global sea surface temperatures have exceeded all previous June highs, with Copernicus data showing 20.86°C on June 21. The record, driven by climate change and a strengthening El Niño, is projected to amplify extreme weather, sea level rise, and marine heatwaves.

- Jul 1
Ocean temperatures set June record as El Niño and climate change push seas into uncharted territory
The average global sea surface temperature on June 21 soared to 20.86–21.0 °C, the highest for that date in recorded history, EU’s Copernicus service reports. El Niño and climate change combine to push readings into uncharted territory.
