World’s seas have hit hottest temperature on record for July, say scientists

Average sea surface temperature outside polar regions was highest on record for July, beating previous high in 2023

World’s seas have hit hottest temperature on record for July, say scientists

TL;DR

  • July 2026 saw record-breaking sea surface temperatures globally, with severe marine heatwaves affecting Europe.
  • Western Europe experienced its hottest June-July on record, leading to wildfires and exceptional heat.
  • Persistent high-pressure systems, amplified by fossil fuel pollution, trapped heat and exacerbated drought conditions.
  • Droughts have impacted water supply, irrigation, and power generation, forcing some power plants to shut down.
  • Economic impacts include billions in lost crops for grain farmers and substantial long-term losses from persistent droughts.
  • Over half a million hectares have burned across the EU this year, with climate change creating favorable conditions for mega-wildfires.
  • Vegetation management and urban planning can mitigate wildfire risks, but adaptive measures are crucial to address future extremes.