All Regions Europe Grim London weather forecast for September as 4 days of rain and thunder to hit The sun will be hiding between clouds for much of the week My London – WeatherRead More About Author OTW Observer See author's posts Post navigation Previous The First Labor Day ParadeNext BBC Weather verdict on date it will be sunny again in London after 4 days of rain and thunder Related Stories London weather latest – When will the heatwave end? All Regions Europe London weather latest – When will the heatwave end? May 26, 2026 The best London parks to visit in a heatwave crowned All Regions Europe The best London parks to visit in a heatwave crowned May 25, 2026 Hottest May day record broken as London area hits 33.5C All Regions Europe Hottest May day record broken as London area hits 33.5C May 25, 2026