A couple reacts on the banks of the Canal Saint-Martin as France experiences a heatwave in Paris on June 21, 2026. Due to the ongoing heatwave sweeping across France - the Bassin des Recollets - a portion of the Canal Saint-Martin in the French capital has been opened for swimming from June 17. France issued a red heatwave alert across more than a third of the country for June 21, as a ferocious heatwave dug in and the government banned the consumption of alcohol in certain areas during the annual Fete de la Musique festivities. (Photo by Dimitar DILKOFF / AFP)