London in September (2026)
Excellent time to visit
Yes — September is one of the best times to visit London. Warm, clear, post-summer calm, with temperatures around 19°C.
Temperature
19°C
Weather
Warm, clear, post-summer calm
Crowds
Moderate
Prices
Moderate
September vs the best time to visit London
The best months to visit London are May, June, September and the months to avoid are November, February. September falls within the peak window, so book accommodation and flights early.
See the full month-by-month guide →Things to do in London in September
British Museum
Two million years of human history under one roof — the Rosetta Stone, the Elgin Marbles, Egyptian mummies. Free entry, extraordinary collection. Book timed entry online.
West End Theatre
London's theatre scene is the world's finest — Hamilton, Les Misérables, and dozens of long-running shows. Book through official theatre box offices to avoid ticket touts.
Borough Market
London's most celebrated food market under the railway arches near London Bridge — Neal's Yard cheese, Monmouth coffee, and freshly cooked street food from global cuisines.
Tower of London & Tower Bridge
The medieval fortress where Anne Boleyn was executed and the Crown Jewels are kept. Fascinating Yeoman Warder tours. Tower Bridge opens daily for tall ships.
Hyde Park Picnic
London's 350-acre royal park is perfect for a picnic — get supplies from M&S Simply Food and find a spot near the Serpentine lake. Speaker's Corner on Sundays is genuinely entertaining.
Tate Modern (Free)
The world's most visited modern art museum, housed in a converted power station with the Turbine Hall installation always worth seeing. The rooftop view of St Paul's is free.
London in September — FAQs
Is September a good time to visit London?
Yes — September is one of the best times to visit London. Warm, clear, post-summer calm, with temperatures around 19°C.
What is the weather like in London in September?
In September, London sees warm, clear, post-summer calm with temperatures around 19°C. Open House London — free entry to 800 buildings
Is London crowded and expensive in September?
September brings moderate crowds and moderate prices in London. The best months overall are May, June, September, so expect peak demand — book early.
What should I pack for London in September?
Pack for temperatures around 19°C. Light layers work well, with something warmer for evenings.
Full Travel Guide
Planning a London trip in September?
Things to do, where to stay, budgets and local tips — all free.
Read the Full London Guide →