London and the South East have one of the mildest climates in the UK, but the weather can be unpredictable. Londoners get used to carrying both an umbrella and sunglasses to be prepared for all eventualities!
Summer can be very pleasant with temperatures averaging 18°C (64°F) and often into the low 20s. In recent years London has experienced heatwaves with temperatures well above 30°C (86°F).
Spring and Autumn Weather
Spring and autumn see temperatures of around 11° to 15°C (52 to 59°F). Evenings are lighter for longer with the advent of British Summer Time at the end of March (until end October).
Typical temperatures for winter are between 2 and 6°C (36 to 43°F). Temperatures don't often drop below freezing and snow isn't common – although in December 2010 London experienced heavy snowfall and an army of snowmen popped up all over the city!
Rainfall in London
The number of rainy days (with more than 0.25mm of rainfall) is fairly consistent throughout the year, with between 11 and 15 rainy days every month. Overall rainfall is highest in November and August (64 mm and 59mm respectively) and is lowest in March and April (37mm each).