A preliminary report from Santé publique France indicates that there were 7,007 excess deaths during the heatwave episodes in June and July. These figures highlight the growing impact of climate change on public health, particularly during extreme weather events. This summer has shown how heatwaves can severely affect individuals, especially those with pre-existing health conditions, and also place immense pressure on healthcare systems already stretched thin. Heatwaves are not only physically taxing for patients but also challenge the capacity of hospitals that have been dealing with years of operational strain. The increasing frequency of such extreme weather events is a concern for health professionals, who are now looking for ways to adapt to these new climatic realities. Professor Patrick Pessaux, president of the Collectif Écoresponsabilité en santé (Ceres) and the European Institute for Ecological Transition in Health (Ietes), emphasizes the need for urgent adaptation of health facilities. He argues that healthcare infrastructure must be prepared to handle the challenges posed by a changing climate to protect both patients and medical staff. As the effects of climate change become more pronounced, the adaptation of health systems is no longer optional but essential. Ensuring the safety and quality of care during heatwaves and other extreme weather events is critical for the future of public health in France and beyond.