Mercator Ocean International

Mid-year highlights 2025 – Mediterranean Sea

Key takeaways Mediterranean Sea January to June 2025: SST and SST anomaly Figure 1: Top: Daily sea surface temperatures averaged for the Mediterranean Sea between 1991-2020 using ESA’s Climate Change Initiative (gray shades), and between 2021-2025 (colored shades) using Mercator Ocean International’s GLO12 analysis. Bottom: Jan to Jun 2025 Mean SST Anomaly relative to a 30-year […]

Mid-year highlights 2025 – North Atlantic

Key takeaways North Atlantic Region – 0°N and 60°N January to June 2025: SST and SST anomaly Figure 1:  Top: Daily sea surface temperatures averaged for the North Atlantic (0°N and 60°N) between 1991-2020 using ESA’s Climate Change Initiative (gray shades), and between 2021-2025 (colored shades) using Mercator Ocean International’s GLO12 analysis.Bottom: : Jan to […]

Ocean Temperature Bulletin – 2025 Mid-year highlights

Key takeaways Read the full bulletin for the first semester of 2025 for the Mediterranean Sea and North Atlantic regions. Global Ocean January to June 2025: SST and SST anomaly Figure 1:  Top: Daily sea surface temperatures averaged for the global ocean between 1991-2020 using ESA’s Climate Change Initiative (gray shades), and between 2021-2025 (colored […]

Ocean Temperature Bulletin – June 2025

A monthly reporting on mean sea surface temperatures and marine heatwave conditions. Key takeaways In Europe Globally SEA SURFACE TEMPERATURE Figure 1:  Daily sea surface temperatures averaged for the global ocean (top), the Mediterranean Sea (left) and the North Atlantic Ocean (right) between 1991-2020 using ESA’s Climate Change Initiative (grey shades), and between 2021-2025 (colored […]

Ocean Temperature Bulletin – May 2025

A monthly reporting on mean sea surface temperatures and marine heatwave conditions. Key takeaways May 2025 was : SEA SURFACE TEMPERATURE Figure 1:  Daily sea surface temperatures (SST) averaged for the global ocean (top), the Mediterranean Sea (left) and the North Atlantic Ocean (right) between 1991-2020 using ESA’s Climate Change Initiative (grey shades), and between […]

Ocean Temperature Bulletin – April 2025

A monthly reporting on mean sea surface temperatures and marine heatwave conditions. Key takeaways April 2025 was the 2nd warmest April on record (after 2024) in the global ocean and in the Mediterranean Sea. Mean sea surface temperatures were above average for 75% of the global ocean (between 60°S and 60°N) with more than 10% […]

Ocean Temperature Bulletin – March 2025

A monthly reporting on mean sea surface temperatures and marine heatwave conditions. Key takeaways In the past month, sea surface temperatures were on average 21.02°C in the global ocean. It was the second warmest March for the ocean since 1991. In the Mediterranean Sea, March 2025 was the warmest March, with a mean sea surface […]