June 2026 broke heat records across Europe and oceans, EU climate data reveals

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🗞️ Driving the news: June 2026 was the hottest ever recorded in western Europe and the second-warmest globally at 1.39°C above the pre-industrial average, according to the EU's Copernicus Climate Change Service and ECMWF
• Record land temperatures coincided with the warmest June sea surface temperatures ever observed for the world's ice-free oceans, narrowly exceeding the 2024 record
• A late-June heatwave broke monthly and all-time records in several countries including Germany and the Czech Republic

🔭 The context: The June event followed an unusually severe May heatwave and preceded another in early July, a succession suggesting extreme heat is becoming a prolonged feature of European summers rather than an isolated event
• Dry conditions spread across the Iberian Peninsula, southern France and parts of eastern Europe
• Scientists attribute part of the ocean warming to strengthening El Niño conditions, though Copernicus maintains that human-driven climate change remains the dominant factor

🌍 Why it matters for the planet: Warmer seas hold that energy far longer than the atmosphere, and marine heatwaves have now spread across the western Mediterranean and Atlantic coastlines, threatening marine ecosystems directly
• On land, the consequences include increased wildfire activity, reduced river flows, and intensified drought that undermines food production
• William Lamb of the Potsdam Institute puts human-driven warming at 1.37°C in 2025, with 1.5°C projected within roughly four years

⏭️ What's next: The European Commission has pledged to pivot from mitigation toward adaptation, a shift that followed 1,300 deaths linked to recent European heatwaves
• Ottmar Edenhofer, chair of the European Scientific Advisory Board on Climate Change, argues that meeting the EU's 2040 and 2050 targets cost-effectively requires economy-wide reductions, singling out agriculture as insufficiently advanced

💬 One quote: "Together, these records reflect a climate system continuing to accumulate heat. The result is increasingly intense heatwaves, a persistently warm ocean, and growing risks for people, ecosystems and infrastructure across Europe and beyond" — Samantha Burgess, strategic lead for climate at ECMWF

📈 One stat: 1.39°C above the pre-industrial average — the second-warmest June globally on record.

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