Ocean Temperature Bulletin

A monthly reporting on mean sea surface temperatures and marine heatwave conditions. Key takeaways February 2025 was the 2nd warmest February on record for the global ocean, with a mean temperature of 20.95 ± 0.08 °C.The past month was the…

Key takeaways January 2025 was the 2nd warmest January on record for the global ocean, with a mean temperature of 20.86°C.38.6% was the maximum surface of the ocean surrounding Europe affected by a marine heatwave event.In the North Atlantic, January…

Key takeaways December 2024 was the second warmest December on record since 1991, with a mean sea surface temperature of 20.67°C.A record monthly mean sea surface temperature was reached in the North Atlantic Ocean – 22.11°C.The North Atlantic Ocean had…

A warm September Sea surface temperature averaged for the North Atlantic Ocean (left), the Mediterranean Sea (center) and the global ocean between 1991-2020 using ESA Climate Change Initiative (green shades), and between 2021-2024 (red shades) + forecast (black) using MOi…

Mercator Ocean International (MOi) publishes a monthly bulletin presenting the marine heatwave conditions for the month just passed. It includes:   for regions of the Ocean in marine heatwaves situation the time this event started,   the timeseries showing the total surface occupied by…

Mercator Ocean International (MOi) publishes a monthly bulletin presenting the marine heatwave conditions for the month just passed. It includes:   for regions of the Ocean in marine heatwaves situation the time this event started,   the timeseries showing the total surface occupied by…