September in London: A Local’s Guide

September in London feels like a gentle shift. Summer fades, but the city stays lively with festivals, art shows, and cosy walks. The air is cooler, the parks turn golden, and there’s plenty to see and do.

👉 It’s one of the best times to visit London: the city is buzzing with events, yet the crowds are smaller than summer, and you still get mild weather with early signs of autumn. 

  • Average day temperature: 20C

  • Average night temperature: 11C

  • Average days of rain: 8

  • Average days with sun: 22

Here are the best things happening this month:


Festivals & Live Events

Totally Thames Festival

stretches its celebration over the month alongside the iconic river, filled with art installations, river races, and electrifying live performances.
📅 1–30 September
💷 Many free, some ticketed

Greenwich Comedy Festival

Big names in comedy set against the picturesque backdrop of the National Maritime Museum.

 📅 15–29 September
💷 £15–£40

London Fashion Week

One of the world’s biggest fashion events. Even if you can’t attend the main shows, the city buzzes with related events at local boutiques and pop-up venues.
📅 12–16 September
💷 £20–£60 for public events and related showcases

Sabrage Experience

Learn the art of opening champagne with a sword in this unique and theatrical experience. Perfect for a special night out or celebration.
📅 Various September dates
💷 From £79
🔗 Book via Fever here and use code SEIRETAKEDA10 for a discount!


Outdoors & Nature

Guided Bike Tours

September’s mild climate makes it ideal for exploring London's outdoor marvels. Cycle through London’s historic lanes and landmarks for a fresh perspective.
📅 1–30 September
💷 From £30

Kew Gardens

See late-summer blooms and the treetop walkway turning golden.Perfect time to take in the views of autumn’s changing foliage.
📅 1–30 September
💷 £15 - Book via this link on Fever

 

Hampstead Heath

For tranquility, wander through Hampstead Heath. This expansive parkland grants sweeping views of the London skyline, an idyllic spot to witness sunset hues over the city.
📅 1–30 September
💷 Free


Art & Exhibitions

London Design Festival

LDF morphs the city into a massive canvas of creativity. With groundbreaking installations and thought-provoking exhibitions, this festival broadens the horizons of design and imagination. It also happens to be where I went on my very first date with my husband, Sam - so it will always be one of my favourite September events.
📅 16–24 September
💷 Various events, some free

Serpentine Galleries

Nestled in Hyde Park offer cutting-edge contemporary art exhibitions sans entry fee - a quintessential stop for art aficionados.
📅 1–30 September
💷 Free

The British Museum

A treasure trove of the world's artifacts, for art history enthusiasts can wander through. Journey through time from the Rosetta Stone to the Parthenon sculptures, without spending a single penny. If you are a first=timer, I thoroughly enjoyed doing a guided tour as the museum is massive!
📅 1–30 September
💷 Free but you can book a guided tour here via Fever

Sculpture in the City

A free outdoor exhibition that turns the Square Mile into an open-air gallery, featuring contemporary works set against London’s historic streets and skyscrapers. Check their website for maps and information about the sculptures!
📅 Throughout September until Spring 2026
💷 Free


Cultural Heritage

Buckingham Palace Summer Opening

Step inside the State Rooms of Buckingham Palace, open to the public only during summer. September is your last chance before it closes for the year! I visited last year for the first time when my dad was visiting and it was such a treat!
📅 Until 29 September
💷 From £30

Open House London

This annual event opens the doors to hundreds of buildings across the city, many of which are usually closed to the public. Discover the hidden facets of London's rich architectural heritage, from historical landmarks to modern marvels, through guided tours and engaging discussions.
📅 23–24 September
💷 Free, some pre-booking needed

Pearly Kings & Queens Harvest Festival

A colourful London tradition with costumes, music, and a parade.Taking place at the Guildhall Yard, this quirky event features traditional music, a parade, and charity fundraising. Adorned in their pearl-studded costumes, the Pearly Kings and Queens honor London's working-class heritage, offering a unique glimpse into the city's cultural tapestry.
📅 17 September
💷 Free, donations encouraged


September in London mixes golden evenings with buzzing events. From open-air festivals to cosy galleries, it’s the perfect month to enjoy the city at its liveliest yet most peaceful.

Follow my adventures on Instagram and TikTok for more hidden corners and travel inspiration.

With love,
— Seire


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