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

July marked a record high for global sea surface temperatures outside of polar regions, surpassing the previous record from 2023. Europe experienced its hottest June-July period on record, with exceptional heat driving wildfires and national temperature records falling. Climate breakdown is intensifying these extremes, leading to widespread drought, power plant shutdowns, and significant economic losses for sectors like agriculture, with economists warning of compounding long-term damage from persistent droughts.

• 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.