Belgium’s More Than 1,200 Heatwave Deaths Spark Political Backlash

Belgium is facing a widening political dispute after provisional figures showed 1,222 excess deaths during the late-June heatwave, renewing questions about preparedness, response and the protection of older people and other vulnerable groups.

The figures, cited by the Risk Management Group and Belgium’s health ministry in reporting published on July 3, cover the period from June 18 to June 29. In a country of 11.8 million people, the provisional toll represented an excess mortality rate of 39%.

Officials described the mortality rate during the heatwave as unprecedented and said the data are due to be confirmed the following week. The deadliest day in the period was June 27, when provisional records showed 572 deaths.

A heatwave that turned into a public health crisis

The heatwave ended on June 29, when storms arrived and temperatures dropped. But by then, the health impact of the episode was already becoming clear.

The excess deaths did not come from a single spike alone. They built across the 12-day period cited by officials, suggesting a sustained public health burden rather than an isolated day of extreme mortality.

The broader European context matters too. France and other countries also reported elevated mortality during the same record heatwave, reinforcing the view that the late-June event placed wide pressure on health systems across western Europe.

Who was most affected

People aged 85 and older accounted for the largest share of the provisional deaths, with 530 recorded in that group.

But the impact was not confined to the oldest residents. Officials also recorded 180 excess deaths among people under 65, a figure that points to vulnerabilities beyond age alone.

That distribution has become central to the public debate in Belgium. It suggests the consequences of extreme heat are shaped not only by age, but also by social conditions, housing, isolation and access to protection.

The political reaction

The publication of the figures quickly turned into a political controversy. Belgium’s opposition accused the federal government of failing to take sufficient measures during the emergency.

Prime Minister Bart De Wever has so far responded with general messages of caution and thanks to health services during the heatwave, rather than with a detailed policy response.

Health minister Frank Vandenbroucke argued that the problem reflects broader social vulnerability, pointing to older people, people who live alone and socially vulnerable groups rather than framing it only as a question of government action.

Aimen Horch, a Flemish Green leader, called for better preparation for future heatwaves. Among the measures he cited were cooling spaces, more bathing areas, air conditioning in care homes and schools, and stronger climate policies.

What comes next

The Risk Management Group is expected to confirm the provisional figures the following week. That review will be closely watched, both for the final mortality tally and for any more detailed breakdowns by region or cause.

For now, the political pressure is likely to grow around Belgium’s readiness for future heatwaves, especially as climate-driven heat episodes become a more prominent public health threat.

The debate is also likely to focus on practical adaptation measures: how to protect older residents, people living alone and those with fewer resources, and whether hospitals, care homes and schools are adequately equipped for future extremes.

What started as a provisional mortality estimate has now become a test of Belgium’s climate and health policy response.

The question facing the government is no longer only how many people died during this heatwave, but whether the country is prepared for the next one.