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 Post navigation Previous Blackout in AndalusiaNext BBC Weather forecasts massive temperature plunge after soaring 29C heat 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