Overview

• Copernicus data show July 2025 averaged 1.25°C above pre-industrial levels, placing it third among all Julys since records began in 1940.
• Every month since mid-2023 has consistently exceeded the 1.5°C warming threshold established by the Paris Agreement, according to the Copernicus Climate Change Service.
• Ocean surface temperatures in July 2025 reached their third-highest July level on record, intensifying marine heatwaves worldwide.
• Arctic sea ice extent fell to 10% below its long-term average—its second-lowest July reading in 47 years—while Antarctic ice cover ranked third-lowest for the month.
• Carlo Buontempo, director of Copernicus C3S, cautioned that stabilizing greenhouse gas concentrations is essential to prevent new temperature records and worsening impacts.