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Climate Change Doubles Germany’s Extreme Heat Days Over Past Year

Scientists warn human-driven warming has exposed four billion people to at least 30 additional extreme heat days.

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Zwei Frauen in einem Boot
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Overview

  • Germany recorded 50 extreme heat days between May 2024 and May 2025, roughly double the number expected in a no-warming scenario.
  • In 195 of 247 analysed countries and regions, human-driven warming at least doubled the frequency of extreme heat days.
  • Friederike Otto of Imperial College London warns that climate change is already lethal and urges swift emission cuts to prevent more deadly heatwaves.
  • June 2024 saw Europe’s most climate-influenced heatwave sweep from Greece through Romania to the Middle East.
  • The Robert Koch Institute estimates about 3,000 heat-related deaths in Germany in both 2023 and 2024, with vulnerable groups facing the highest risks.