London weather in September
Mild and comfortable, with some rainy days. Average highs of 20°C and lows of 12°C, with around 10 rainy days expected throughout the month.
While September isn't our top-rated month for London, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.
Average high
20°C
Average low
12°C
Rainy days
10 days
Best months to visit
July
What to do in London in September
Whatever the weather, London rewards curious visitors. Here are some of the best ways to spend your time:
Museum and gallery visits
West End theatre shows
River Thames cruises
Royal palace tours
Markets and street food
Pub culture and afternoon tea
What to pack for September
Light layers work well — T-shirts and shorts for the day, a light jacket for evenings. Comfortable walking shoes are a must. Bring a compact umbrella just in case.
Browse other months
January
8C
Cold, with some rainy days.
February
9C
Cold, with some rainy days.
March
11C
Cool, with some rainy days.
April
14C
Cool, with occasional showers.
May
17C
Cool, with some rainy days.
June
21C
Mild and comfortable, with some rainy days.
Recommended
July
23C
Mild and comfortable, with some rainy days.
August
22C
Mild and comfortable, with some rainy days.
September (you are here)
20C
Mild and comfortable, with some rainy days.
October
16C
Cool, with some rainy days.
November
11C
Cool, with some rainy days.
December
9C
Cold, with some rainy days.
Book your September trip to London
Find hotels, tours and experiences for the perfect escape.
