World's oceans reach record surface temperatures in June
Data from the European Union's Copernicus programme shows that ocean surface temperatures hit a record high of 21 degrees Celsius in June. Scientists attribute this surge to a combination of El Niño and human-driven climate change.
Amalgamated from France 24 (opens in new tab), NDTV (opens in new tab), Phys.org (opens in new tab), Al Jazeera (opens in new tab), France 24 (opens in new tab)
The world's oceans reached record surface temperatures in June, according to data provided by Copernicus, the European Union’s Earth-observation programme. Reports from multiple news outlets indicate that average surface temperatures hit a peak of approximately 21 degrees Celsius during the month, marking the highest temperature recorded for any June since monitoring began.
According to reports from Al Jazeera and France 24, the first half of 2026 was marked by sustained and exceptional ocean warmth. While some outlets reported the figure as 21 degrees Celsius, others noted a specific average of 20.98 degrees Celsius. Both figures confirm that global waters reached unprecedented levels of heat during the month of June.
Scientists cited in reports from Phys.org and NDTV suggest that these record temperatures are driven by two primary factors: human-driven climate change and the influence of an El Niño weather pattern. The combination of these forces has led to a significant increase in ocean temperatures compared to previous years. Scientists note that the interplay between natural cycles and atmospheric changes is creating conditions for continued heat accumulation.
The data from Copernicus indicates that the warming trend is likely to continue into the subsequent months. Experts warned on Wednesday that the presence of El Niño, combined with ongoing climate shifts, could drive surface temperatures even higher in the coming months. These observations indicate that current levels of heat represent a significant and continuing shift in marine conditions. Scientists are monitoring these trends closely as they evaluate the implications for global weather patterns and maritime environments.
Why this matters
The continued rise in ocean temperatures can affect marine ecosystems, global weather patterns, and coastal communities. These findings also highlight the ongoing impact of both natural cycles like El Niño and long-term human activities on global water bodies.
What's confirmed / what isn't
Several sources agree that June 2026 saw record-breaking ocean temperatures and that both El Niño and human-driven factors contributed to this trend. The exact average temperature cited varies slightly between 20.98 degrees Celsius and 21 degrees Celsius across different reporting outlets.
Background
Copernicus is the European Union's Earth-observation programme that provides data for various environmental monitoring systems. El Niño is a recurring climate pattern involving the warming of surface waters in the eastern and central Pacific Ocean.