Weather In September In London England 2024. The temperatures in london in september are usually low and can range between 53°f and 66°f. Early conclusions for autumn 2024.
September is a great time of the year to visit london because we usually get a bit of an indian summer (british version of course) so it’s usually quite nice weather. Daily high temperatures decrease by 6°f, from 69°f to 63°f, rarely falling below 57°f or exceeding 78°f.