France is experiencing a deadly heatwave, with authorities estimating around 20 drowning deaths linked to the extreme temperatures. A spokesperson for the civil defense, Jérôme Boulanger, urged caution, advising people to cool off only in supervised areas. The country recently recorded its warmest night in seven years, prompting red alerts across much of the nation. The deaths appear to be connected to individuals seeking relief from the heat in rivers, lakes, and the sea. Authorities are emphasizing the dangers of unsupervised swimming during the ongoing heat emergency. The heatwave is impacting a large portion of France, raising concerns about public health and safety.