London Weather in September
During September, London experiences high daytime temperatures of 27°C (81°F) and cooler nights around 15°C (59°F). Expect quite a bit of rainfall. Around 99 mm (3.9 in) is typical.
Rainfall in London in September
Historically, approximately 10 days this month are expected to have rain, averaging 99 mm (3.9 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in London in September
The temperature in London in September is perfect. Daytime highs reach 27°C (81°F), with nights dropping to 15°C (59°F). Overall, the month follows a fairly predictable daily temperature pattern. With lows of 15°C (59°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our London's climate page.
London Temperature in September
Min Temperature
15°C (59°F)
Max Temperature
27°C (81°F)
Chance of Rain
33%
Precipitation
99 mm (3.9 in)
Rainy days
10 days
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in London in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho.What To Do in London in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our London's climate page.
See the full London climate overview or explore weather in the United States of America.
