UK 's peak temperature was 34.4°C at Gravesend in September 2016 .
In fact , 2011 and 2016 were notable as many areas of the country recorded their highest temperatures of the year in September and October ( for example , 28.2 °C at Hawarden on 1 October and 26.3 °C at St. Athan on 2 October 2011 and the UK 's highest temperature of 2016 on 13 September with 34.4°C at Gravesend ) .  areas in the southern half of England have on average the warmest autumns , with mean temperatures of .
Climate of the United Kingdom