Weather · London, United Kingdom
London Weather in September
September in London averages 21°C by day and 13°C at night, with about 52mm of rain. That makes it one of the best months to visit.
Avg high
21°C
70°F
Avg low
13°C
55°F
Rainfall
52mm
#9 wettest of 12
What to pack
Layers, plus a jacket for mornings and nights. Rain is unlikely to interrupt your plans.
Timing a trip around the weather? A Local Friend in London builds it around the season for you.