All Regions Europe London weather latest as hottest day of year so far predicted with 21C temperatures The first day of spring could be the hottest of the year so far, The Met Office said My London – WeatherRead More About Author OTW Observer See author's posts Continue Reading Previous: Farming on the Straight, Curved, and NarrowNext: London to be hotter than Barcelona and Athens during spring equinox 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