"In Josselin, in the Morbihan region of France, this canal has become one of the only ways for people to cool off. We go there in the morning and evening to do some water sports, and then during the day, we stay indoors in the cool. Everyone drinks water and eats ice cream. Ahead of this weekend's heat wave, this holiday maker is worried. We'll be staying in the shade, we've got no choice anyway. It's the same for everyone, we'll just have to put up with it. And things are going to get worse. The Morbihan region has been placed on red heat alert, along with eight other regions in western France. But almost the whole country is affected. This afternoon, temperatures hit 36 degrees in Rennes, over 40 degrees in Nimes, and even 41.5 degrees in the small town of Lodeuve. In Paris, residents are bracing for four days of extreme heat. Sandra Robert, 44, lives on the sixth and top floor. It's nearly 31 degrees, with 53% humidity, it feels a bit like a hamam. She's making do as best she can. I've put emergency blankets over the windows and curtains to block out the sun. For this weekend, she's found a way to escape the heat. I'm going to look after people's cats while they're away, in exchange for a place to stay. To help people cope with the heat, the city of Paris has set up air-conditioned spaces available to all. Around ten people come here to work in the cool, like this school teacher. My girlfriend told me this place was air-conditioned and that we could work here. In the afternoon, it quickly becomes unbearable, so I alternate between cafes and libraries. According to Météo France, the heat wave could persist until July 14th."