In Paris it's about 43degC, as western Europe sweats in a second heatwave.
And of course on a hot day what better than a dip in a pool? Britons' famed good manners in queues broke down at the Parliament Hill Lido pool in Hampstead - police were called after tempers flared and the pool was closed.
Gary Henson is a New Zealand journalist who lives nearby. He describes the scene.
