September in London marks the transition from the vibrant summer season to the milder, more tranquil days of autumn. This guide provides everything you need to know about visiting London in September, including weather expectations, wardrobe suggestions, and a highlight of activities and events during this beautifully temperate month.

London Weather in September

September in London often enjoys mild temperatures with less humidity compared to the peak summer months. Average temperatures range from 14°C to 19°C (57°F to 66°F). While the weather generally remains pleasant, the city can experience occasional showers, so packing an umbrella is advisable. 

Daylight hours begin to shorten as the month progresses, with sunrise moving from about 6:00 AM to 6:45 AM and sunset from about 7:45 PM to 6:45 PM by month’s end.

Light layers that can be adjusted throughout the day are perfect for navigating the city’s changeable climate.

Average Weather Conditions in September

  • Temperature: Comfortably mild, usually ranging from 14°C to 19°C (57°F to 66°F).
  • Rainfall: Intermittent showers are common, but heavy rain is less likely.
  • Daylight: Daylight decreases over the month, with earlier sunsets and later sunrises.
  • Snow: Snow is not a concern in September.

September Weather Averages

Day Temp.
Night Temp.
Rainfall
Wind Speed
Humidity
19°C (66°F)
12°C (54°F)
49mm
12km/h (7mph)
70%

Daylight Hours in September

September starts with sunrise at approximately 6:00 AM and sunset around 7:45 PM. By the end of the month, sunrise shifts to about 6:45 AM and sunset to around 6:45 PM. These changing daylight hours still offer ample time for sightseeing and enjoying the early autumn atmosphere.

What to Wear in London in September

As summer gives way to autumn, the weather can be unpredictable, making versatile clothing choices important.

Essentials for Your Travel Wardrobe:

  • Light and Medium Layers: Include t-shirts, cardigans, and a lightweight jacket.
  • Comfortable Footwear: Suitable for walking and adaptable to both warm and cooler days.

Footwear and Accessories:

  • Scarf and Light Gloves: Handy for cooler mornings and evenings.
  • Umbrella: Essential for sudden showers.

Adjusting for Indoor and Outdoor Comfort:

  • Outdoor Gear: A waterproof jacket for rainy days.
  • Indoor Settings: Light layers are sufficient as indoor heating is not yet a necessity.

Top Activities and Events in September

September’s mild weather and the start of the cultural season provide numerous opportunities for enjoyment.

‘Spirit Of Place’ sculptures in in Canary Wharf, London as part of London Design Festival - Image courtesy of https://londondesignfestival.com/stories/visit-waterside-colourful-sculptures

Waterside sculptures in Canary Wharf
Image © London Design Festival

Cultural Events and Festivals

  • Open House London: This event offers free access to hundreds of fascinating buildings across the city not normally open to the public.
  • London Design Festival: Celebrates and promotes London as the design capital of the world with events and installations across the city.
  • Totally Thames Festival: A month-long celebration with art, music, and cultural events along the River Thames.

Indoor and Outdoor Activities

  • Visit Museums and Galleries: Explore new exhibitions and late-night openings as the cultural season kicks off.
  • Enjoy the Outdoors: The city’s parks begin to show early signs of autumn, making it a beautiful time for walks and picnics.

Must-Visit Attractions in London in September

With fewer tourists and comfortable weather, September is ideal for visiting both popular and lesser-known attractions.

Big Ben & Houses of Parliament, London in November

Iconic Landmarks

  • The Houses of Parliament: Explore the political heart of the UK with tours that are often easier to book during this month.
  • St. Paul’s Cathedral: Enjoy visiting without the summer crowds.

Museums and Galleries

  • The Victoria and Albert Museum: Discover new autumn exhibitions.
  • The Museum of London: Delve into the city’s history from prehistoric to modern times without the rush of peak tourist season.

Lesser-Known Gems

  • The Sky Garden: Offers beautiful panoramic views of London transitioning into autumn.
  • Greenwich Park: Ideal for a peaceful day out, with stunning views of the city and the River Thames.

For more alternatives, take a look at our London Travel Guide.

Making the Most of September in London: Tips for Visitors

Accommodation Tips in September

Choosing where to stay in September can greatly enhance your London experience:

Choosing Your Location

  • Near Cultural Hotspots: Stay close to areas like South Kensington or Bankside to be near major museums and galleries.
  • Near Public Transport: Ensuring easy access to the Underground can help you make the most of your visit as the weather begins to cool.

September Travel Tips

Navigating London in September is generally easy and pleasant:

Public Transport

  • Plan Ahead for Events: Some events, like Open House London, might affect public transportation routes and availability. Checking updates ahead of time can save delays.

Personal Comfort

  • Layer Up: Preparedness for variable weather will ensure comfort, whether it’s a warm day or a cool evening.

Safety and Health

  • Allergy Care: For those sensitive to seasonal changes, managing allergies is important as the city moves into autumn.

Insider Tips for Overseas Visitors

September in London is an enchanting month with a gentle transition into autumn, providing a unique opportunity to experience the city in a different light. Here are some insider tips to help you make the most of your visit.

Explore Outdoor Spaces

  • Visit the Royal Botanic Gardens, Kew: In September, Kew Gardens begins to show the first signs of autumnal color. It’s an excellent time for photography and enjoying the cooler, less crowded paths.
  • Late Summer Picnics: Take advantage of the mild weather by having a picnic in one of London’s beautiful parks, such as Hampstead Heath or Richmond Park, where you can also enjoy fantastic views of the Thames.

Engage with Local Culture

  • Explore Local Markets: Visit markets like the Columbia Road Flower Market or Brick Lane Market for a taste of local life, unique antiques, and vibrant street food.
  • Attend London Fashion Week Events: While main events might be invitation-only, there are plenty of public and fringe events around the city that capture the excitement of Fashion Week.

Experience Seasonal Events

  • Open House London: Plan to visit some of the unique buildings that open their doors during this event. It’s a rare opportunity to see inside places usually closed to the public.
  • Enjoy the Totally Thames Festival: Engage with the city’s river culture through art installations, river races, and historical walks along the Thames.

Nightlife and Dining

  • Rooftop Bars: September evenings can still be mild enough to enjoy London’s rooftop bars. Places like The Shard or the Radio Rooftop Bar provide stunning night-time views.
  • Seasonal Dining: Many restaurants feature seasonal menus that highlight the best of autumn produce. It’s a perfect time to savor dishes made with fresh, local ingredients.

Frequently Asked Questions (FAQ) about visiting London in September

September generally sees fewer tourists than the peak summer months, making it a great time to visit if you prefer a less crowded experience, although cultural and design events can still draw crowds.

The London Design Festival and Open House London are significant events that offer insights into the city’s architecture and design culture. Museums and galleries also begin to launch their major autumn exhibitions.

While main attraction prices remain constant, traveling in September can be more cost-effective regarding accommodations and flights compared to the peak summer season.

Layering is key. Be prepared with a light jacket for cooler evenings and comfortable shoes as you’ll likely do a lot of walking.

Public transport is very efficient, but always have an alternative route planned, especially when attending popular events like the Totally Thames Festival, as certain areas might be busier than usual.

Explore Detailed Weather Information

For comprehensive insights into London’s weather, explore the following sections:

Seasonal Weather Guides for London:

Navigating London’s ever-changing weather and making the most of your visit requires access to the right resources. Here are some valuable tools and links to enhance your travel experience:

Weather Forecast and Updates

  1. Met Office: www.metoffice.gov.uk – The UK’s national weather service offers detailed forecasts and weather warnings.
  2. BBC Weather: www.bbc.co.uk/weather – Provides reliable weather forecasts and updates for London and surrounding areas.
  3. Weather.com: www.weather.com – For comprehensive weather forecasts including hourly and 10-day predictions.
  4. AccuWeather: www.accuweather.com – Offers local and long-range weather forecasts with real-time updates.

London Events, Attractions, and Activities

  1. Time Out London: www.timeout.com/london – Discover the latest events, activities, and attractions in London, suitable for every season.
  2. Visit London: www.visitlondon.com – The official visitor guide for upcoming events, exhibitions, and seasonal activities in London.
  3. The Travel Wiki: thetravel.wiki – Explore our blog for detailed guides on tours and attractions in London. Find information on daily tours to places like Bath, Windsor, Stonehenge, and the Harry Potter locations in London and the rest of the UK, as well as tours within or from London and various travel passes.

London’s weather is famously unpredictable, but that’s part of the city’s charm. Exploring London from a hop-on hop-off bus tour is a fantastic way to see the city, regardless of the weather.

These tours let you visit iconic landmarks like the London Eye, Buckingham Palace, the Tower of London, Tower Bridge, St. Paul’s Cathedral, Big Ben and the Houses of Parliament at your own pace.

No matter the season — whether it’s sunny, rainy, or somewhere in between — you can enjoy the open-top deck on warm days or move downstairs to the covered section if the weather turns.

From blooming spring to sunny summer, vibrant autumn, and festive winter, a hop-on hop-off sightseeing bus tour offers a comfortable and flexible way to experience London’s beauty throughout the year.

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