More than 35,000 people died from heat-related causes in Europe during the summer of 2026.

Omissions

• The 35,000 figure refers to 'excess deaths' (all deaths above the expected baseline during heatwaves), which epidemiologists use as a proxy for heat-related mortality; it is not a count of officially registered deaths certified as caused by heat.
• The figure comes from a rapid modelling/analysis exercise with inherent statistical uncertainty, not from confirmed official statistics such as Eurostat or national statistics offices.
• Other rapid analyses for shorter windows give smaller numbers: a Zenodo modelling study estimated 20,390 heat-related deaths across Europe for 22–28 June 2026 alone, indicating the 35,000+ total is a cumulative summer estimate.
• The claim was reported primarily by The Guardian; several outlets (China Daily, Taipei Times, Anadolu Agency) reproduce the same Guardian-reported figure, so genuine independent corroboration from a separate data source is limited.

Sources

• AcademicZenodo (heat-mortality modelling record)Using previously developed heat-mortality response functions, I calculate June 22-28 saw 20,390 heat-related deaths across Europe.
• SecondaryThe GuardianAt least 35,000 more people died during Europe's four record-breaking, back-to-back heatwaves this summer than would normally be expected.
• SecondaryAnadolu AgencyHeat waves linked to at least 35,000 excess deaths across Europe; Modeling estimated 1,070 excess deaths in Poland and about 220 in Switzerland during the late-June heat wave. Heat is often not recorded as the [cause of death].
• SecondaryChina DailyAt least 35,000 excess deaths have been recorded during heat waves that have scorched Europe this year, The Guardian newspaper has reported.