Minnie, It means exactly that, but it isn't that bad, I live in the south of France and todays max temp. was 32C. 37C forecast for tomorrow. The night time temp gets down to 20C so your drinks will get cool and will seem cool even at 17C when it is 37C in the afternoon. If you will be staying on a site with a mains electricity supply consider getting a mains adaptor. Some coolboxes come with an adaptor included. If you go to the websites of the big hypermarkets (Géant, Intermarché, Casino, Leclerc, Auchan, and DIY stores Leroy Merlin, and Castorama you may find that you can get them cheaper in France. They are on sale in my local Intermarché, I can check the price if you wish.