All Regions Europe London Marathon weather warning issued as athletes told ‘remember why you are taking part’ Sunday is set to be hotter than Madrid and Barcelona My London – WeatherRead More About Author OTW Observer See author's posts Post navigation Previous Exactly which day will be hottest in London next week with temperatures soaring to 26CNext Argentina’s Sierra de Las Quijadas Related Stories Met Office red warning for extreme 38C heatwave extended – full list of places hit All Regions Europe Met Office red warning for extreme 38C heatwave extended – full list of places hit June 25, 2026 Mayor Sadiq Khan unveils 37 heatwave measures in first ever London ‘heat plan’ All Regions Europe Mayor Sadiq Khan unveils 37 heatwave measures in first ever London ‘heat plan’ June 25, 2026 The ‘hottest’ part of London where the heatwave feels ‘claustrophobic’ All Regions Europe The ‘hottest’ part of London where the heatwave feels ‘claustrophobic’ June 24, 2026
