Belgium records deadliest heatwave in 26 years with 1,747 deaths

Between June 18 and June 29, 2026, Belgium experienced a severe heatwave that resulted in 1,747 excess deaths. The Belgian National Institute of Public Health, Sciensano, reported an excess mortality rate of 47.8% for the period between June 18 and July 1. This figure is the highest recorded during a heatwave in the country since 2000, marking the deadliest such event in 26 years. Meteorological data indicates 10 consecutive days of temperatures near 30 degrees Celsius, peaking at 35.5 degrees Celsius on June 26. Health officials attributed the high death toll to the duration of the heatwave, sustained high temperatures, and elevated ozone concentrations. Initial estimates from the previous week had placed the death toll at 1,222, but these figures were subsequently revised upward. This heatwave was part of a broader, historic climate event affecting large parts of Europe.