All Regions Europe Thursday set to be hottest day of the year with highs of 30C London Fire Brigade has issued a warning about open-water swimming My London – WeatherRead More About Author OTW Observer See author's posts Continue Reading Previous: Blackout in AndalusiaNext: BBC Weather forecasts massive temperature plunge after soaring 29C heat Related Stories 26C weather to mark ‘last blast of summer’ in London before rain sweeps in All Regions Europe 26C weather to mark ‘last blast of summer’ in London before rain sweeps in September 19, 2025 Exactly when London temperatures soar to 26C before dropping 10 degrees All Regions Europe Exactly when London temperatures soar to 26C before dropping 10 degrees September 17, 2025 Weather expert gives verdict on chances of thunderstorms in London next week All Regions Europe Weather expert gives verdict on chances of thunderstorms in London next week September 16, 2025