NEWS STORY- New UKHSA data shows 1,504 heat-related deaths during summer of 2025
Latest data shows Summer 2025 saw 1,504 heat‑associated deaths in England.
Latest data published by the UK Health Security Agency (UKHSA) shows that there were an estimated 1,504 heat-associated deaths during the summer of 2025 across five heat episodes that met the UKHSA definition.
“Summer 2025 was the warmest UK summer on record, with a mean temperature of 16.1°C, but the number of heat-associated deaths observed was significantly lower than expected. Based on recent historical associations between temperature and mortality, modelled estimates predicted 3,039 heat-associated deaths for England during the 2025 heat episodes. This means 1,535 fewer deaths were observed than anticipated and this pattern was consistent across all five heat episodes.”
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