London in September 2025 : What to See & What to Expect from Weather
A visit to London in September will offer you everything you expect and more!
With the crowds beginning to thin out slightly with the start of the school holidays and the weather still reasonably good, you should be in for a fun trip!
Read on to find out more in this guide as to what to do when you visit this cool capital city in September.
Contents
- 1 Will Average Weather In London In September Ruin Your Holiday?
- 2 What Is The Weather Like In London In September?
- 3 Packing Tips for Visiting London in September
- 4 What to Wear in London in September
- 5 Best Things to Do in London in September
- 6 Things to Do in London with Kids in September
- 7 Best Romantic Things to Do in London in September
- 8 Book Cheap Flights
- 9 Places to Sleep When Visiting London
- 10 Frequently Asked Questions about London in September
- 11 Conclusion
Will Average Weather In London In September Ruin Your Holiday?
Of course, the weather is always a big topic of conversation in the United Kingdom. That’s because it is often terrible! But the London weather in September is still reasonably good.
And we are strong believers in the fact that you should never let the weather ruin your holiday! Luckily, whatever happens, London has a huge range of indoor attractions – so you will still have an epic time even if it rains.
Let’s check out what you can expect with the London weather in the fall.
What Is The Weather Like In London In September?
The weather in early September in London is still very much like the weather in August.
Expect pleasant temperatures into the low twenties (celsius) – that’s about 70 degrees Fahrenheit. As the month draws to a close however there is a distinct autumn vibe, and the daytime average temperature in London in September will drop to around 18 degrees celsius (maximum mid 60s Fahrenheit).
At this point, you will likely need a jacket in the evenings. Rainfall increases too from the August average and rain will fall on around 15 days in September.
However, note that only 8 of those days will see what is termed as “significant rainfall” – the other 7 days will likely receive just passing showers.
Packing Tips for Visiting London in September
If you are wondering what to pack for a trip to London in September, we’ve got you covered.
Here are the key items you will need to bring with you to London in September:
- A Raincoat: Don’t get caught in an unexpected shower – even going from an underground station to your hotel can get you soaked! The temperatures should be warm enough to get by with a very light waterproof jacket. A fold up hiking jacket should do, as long as you have a few jumpers for underneath if the weather gets cold.
- Jumpers: The mornings can be fresh and the evenings will start to see drops in temperature. If you want to make the most of the evenings exploring London outdoors you’ll need more than a tshirt.
- Comfortable shoes: Walking around London is the best way to see the city, but you will get tired! Make sure you have comfortable shoes for sightseeing. Ladies, stick your heels in your bag in the evenings unless you are travelling by taxi !
- Money Belt: Big city, be safe. Enough said.
What to Wear in London in September
The key to London – at any time of year – is layers. That’s especially true when thinking about how to dress for London in September.
That’s because you can move quickly from cool temperatures in the evenings outdoors to a crowded and warm bar. Or the sun can come out unexpectedly and you’ll be too hot on the bus. The changeable weather in the UK – and the difference between outdoor and indoor temperatures towards the end of the month – means you will need a flexible wardrobe.
Tshirts and Jumpers that can be layered up or down as needed are best. In the evenings, you may want to bring some dressy clothes if you plan to visit the opera or a fancy restaurant. And don’t forget that your shoes need to be comfortable and practical over stylish – especially for daytime sightseeing.
You’ll need to think a bit more about what to wear in London in late September. The autumn weather will be closing in and you’ll need a coat over your jumper, definitely in the evenings.
Best Things to Do in London in September
September is a wonderful month to explore London, as the weather remains pleasant and the summer crowds begin to thin out. This transition period provides a unique opportunity to enjoy the city’s attractions with less hustle and bustle.
From iconic landmarks to hidden gems, there are plenty of things to do in London during the month of September, making it an ideal time for visitors to experience the city’s rich culture and vibrant atmosphere.
Take a Visit to Tower Bridge
Visiting Tower Bridge in September is a delightful experience, as the weather is typically mild and the crowds are smaller. This iconic London landmark offers stunning views of the River Thames and the city from its high-level walkways with glass floors.
The Tower Bridge Exhibition provides fascinating insights into the bridge’s history and engineering. The combination of beautiful vistas and historical exhibits makes it a must-visit.
To ensure a hassle-free experience, book your Tower Bridge tickets online in advance, saving both time and money.
SEA LIFE London
SEA LIFE London in September is a fantastic destination for families and marine enthusiasts. With over 600 species, including sharks, turtles, and penguins, the aquarium offers an immersive experience in marine life.
The cooler September weather makes it a great indoor activity, and interactive exhibits like the touch pool and feeding sessions keep everyone engaged. The spacious layout ensures a comfortable visit even during busy times.
To avoid long queues and secure your preferred time slot, book your SEA LIFE London tickets online in advance.
Tower of London
The Tower of London is a fascinating historical site to visit in September. The cooler weather makes exploring the medieval fortress more comfortable, while the slightly reduced tourist crowds provide a more enjoyable experience.
Highlights include the Crown Jewels, the medieval White Tower, and the famous Yeoman Warder tours. The Tower’s rich history, from royal residences to infamous prisons, offers a captivating journey through British heritage.
To save time and ensure entry, purchase your Tower of London tickets online in advance.
Buckingham Palace
September is an exceptional time to visit Buckingham Palace, coinciding with the end of the Summer Opening of the State Rooms. Visitors can explore the opulent interiors, admire the exquisite art collection, and witness the grandeur of the British monarchy up close.
The Changing of the Guard ceremony is a highlight, adding to the royal experience. The pleasant September weather enhances the beauty of the palace gardens, making it an ideal time for a leisurely stroll.
To avoid long queues and secure your entry, book your Buckingham Palace tickets online in advance.
Get Away from London and Visit Windsor Castle
A trip to Windsor Castle in September offers a charming retreat from London. The historic castle, one of the Queen’s official residences, is rich in history and architectural splendor. The State Apartments, adorned with exquisite artworks and antiques, provide a glimpse into royal life.
The castle’s beautiful grounds and St. George’s Chapel, where many royal ceremonies are held, add to the allure. The mild September weather makes exploring the extensive gardens and the picturesque town of Windsor particularly enjoyable.
To ensure a smooth visit and save time, book your Windsor Castle tickets online beforehand.
Visit Big Ben and The Houses of Parliament
Visiting Big Ben and the Houses of Parliament in September offers a captivating glimpse into British history and governance. The iconic clock tower, officially named Elizabeth Tower, stands majestically over the River Thames.
The guided tours of the Houses of Parliament provide fascinating insights into the workings of the UK government and the history of the building itself. The mild September weather enhances the experience, making it pleasant to explore the surrounding area.
To ensure you get the most out of your visit and avoid long queues, get your ticket online prior to your trip.
Concerts in London in September
September is a prime month for concerts in London, with a diverse lineup catering to all musical tastes (ABBA, Janis Joplin, etc.)
From big rock bands and pop icons to jazz ensembles and classical orchestras, there’s something for everyone. The cooler weather and vibrant atmosphere make it an ideal time to enjoy live music.
For a comprehensive list of concerts and to book tickets, check online for the latest schedules and availability, ensuring you don’t miss out on your favorite performances.
Shows and Musicals in London in September
London’s West End is bustling with shows and musicals in September, offering a vibrant array of performances. Popular productions like Wicked, Mamma Mia, and Les Miserables are must-sees.
The pleasant September weather makes it an excellent time to enjoy an evening at the theater.
For last-minute deals, check the box office at Leicester Square, or plan ahead and book your tickets online to secure the best seats and avoid disappointment.
Visiting London’s Parks and Public Gardens in September
September is a beautiful time to visit London’s parks and public gardens, with mild weather and stunning autumn foliage.
Hyde Park is ideal for picnics and leisurely walks, while Kew Gardens offers a more formal experience with its vast collection of plants and tranquil landscapes.
The cooler temperatures make exploring these green spaces enjoyable and comfortable. Many of these parks are free to enter, providing a budget-friendly way to experience the natural beauty of London.
Events in London in September
London hosts a variety of exciting events in September, including London Fashion Week and the BBC Proms in the Park.
The Open House Festival allows access to some of the city’s best-hidden architectural gems, while Buckingham Palace opens its doors for tours.
These events, combined with the cooler weather, make September an excellent time to explore London’s cultural scene. Check event schedules and book tickets in advance to make the most of your visit.
Things to Do in London with Kids in September
London offers a plethora of exciting experiences for kids. From interactive exhibits to classic attractions, there’s something for everyone.
Here are some top recommendations for family-friendly activities in September.
Explore The Making of Harry Potter with a Warner Bros Studio Tour
Exploring The Making of Harry Potter at Warner Bros Studios in September is a magical adventure for fans of all ages. Visitors can walk through iconic sets like Diagon Alley, the Great Hall, and the Forbidden Forest, experiencing the magic firsthand.
The tour includes interactive exhibits, authentic costumes, and props used in the films, offering an immersive behind-the-scenes look at the wizarding world. The cooler September weather makes the visit even more enjoyable.
Additionally, consider bringing along some custom pens for your kids to use for note-taking or sketching during their Harry Potter visits, making the experience even more engaging and memorable.
To avoid long queues and ensure your spot, book your Warner Bros Studio Tour tickets online in advance, saving both time and money.
DreamWorks Shrek’s Adventure
Shrek’s Adventure in September is a delightful experience for kids and families, combining interactive shows, 4D rides, and character meet-and-greets. The adventure takes you on a whimsical journey through the world of Shrek, featuring beloved characters like Donkey and Fiona.
The cooler weather in September makes it an ideal time to enjoy this indoor attraction. Each experience is unique, ensuring plenty of laughter and fun. To avoid long waits and secure your preferred time slot, reserve your Shrek’s Adventure tickets early on the internet, ensuring a seamless and enjoyable visit.
Wembley Stadium Guided Tour
A Wembley Stadium Guided Tour in September is a must for football fans and sports enthusiasts.
This tour offers a behind-the-scenes look at one of the most iconic stadiums in the world. Visitors can explore the players’ dressing rooms, walk through the players’ tunnel, and stand in the Royal Box.
To avoid long queues and ensure your preferred tour time, purchase your Wembley Stadium Guided Tour tickets ahead of time, saving time and ensuring a smooth visit.
Best Romantic Things to Do in London in September
London offers a variety of romantic activities and exciting places for couples in September, creating perfect opportunities for memorable experiences.
Champagne Experience on the London Eye
A Champagne Experience on the London Eye in September is the epitome of romance.
As you ascend above the city, you and your partner can enjoy breathtaking views of iconic landmarks while sipping on a glass of chilled champagne. The cooler weather and stunning sunset views make this experience truly unforgettable.
To avoid long waits and secure your preferred time slot, purchase your tickets online in advance.
Taking a Stroll at Sunset
Taking a stroll at sunset in September is a magical experience in London.
The city’s beautiful parks and viewpoints, like Primrose Hill, offer spectacular views as the sun sets over the skyline. The cooler evening temperatures make it a perfect time for a leisurely walk, hand in hand, while enjoying the serene ambiance and picturesque scenery.
Don’t miss the chance to capture some memorable photos together.
Booking a Meal at a Fancy Restaurant
Booking a meal at a fancy restaurant in September is a wonderful way to celebrate a romantic evening in London.
The city boasts numerous fine dining options, from Michelin-starred establishments to charming hidden gems. The cooler weather creates a cozy atmosphere, perfect for enjoying exquisite cuisine and intimate conversations.
You can find a list of the finest dining restaurants in London on this page.
Book Cheap Flights
Although the main tourist season has largely come to a close – with the majority of kids in the UK heading back to school – it is still busy in London.
You’ll need to start looking at flights around 3 months ahead of time in order to get the best deals (I use this tool to compare flight prices).
This will give you the opportunity to search for different inbound and outbound airports to get the very best prices.
Places to Sleep When Visiting London
A quick scan of websites such as booking.com will give you an idea of budget and premium hotel options in London in September. Here are a couple of examples of just what you can expect from hotels in London in the fall.
If you fancy a splurge on a special occasion, try the fabulous Hotel Cafe Royal. With rooms starting at over £1000, it doesn’t come cheap. But the trade off is absolutely stunning accommodation in one of London’s landmark hotels. The pool and hammam will surely be welcome after a hard day’s sightseeing. And in the morning you can treat yourself to a full English breakfast!
Those with a more normal budget won’t be left out in the cold either. You can find great accommodation at hotels such as this Best Western in Hyde Park for just over £100. WIth a great breakfast and fantastic location, what else do you need?
Frequently Asked Questions about London in September
What time does it get dark in London in September?
Sunset is just after 7pm, and you can expect it to be fully dark at around 8.30/9pm.
Is it cold in London in September?
Not very. At the beginning of month the temperatures will still get into the early twenties (celsius). Towards the end of the month however it begins to cool down, and you can expert temperatures to be around 17 degrees celsius during the day.
How busy is London in September?
A lot of the schools are back in session and many European travellers have headed home. Still, September is still a busy month in London. If you fancy things a bit quieter, consider visiting in February or November.
What’s on at the theatre in London England in September?
London theatres showcase a great number of the old favourites in September. Expect to see shows such as the Lion King, Wicked and Mathilda.
Conclusion
Now that you know what to expect from the London weather in September and have an idea about your itinerary, why not get to planning in more detail.
Head over to our city pass page to see if it is worthwhile for you to buy a visitors pass when in London. In case you want to explore more choices, take a look at my guide comparing several London sightseeing passes to find the one that fits your travel plans perfectly.
I’m Sebastian and I love exploring and writing about London. I’ve spent lots of time wandering around the city, finding cool places and learning all the best things to do. On my blog, LondonPass.info, I talk about all the awesome spots in London, from the famous ones everyone knows to secret places that are super special.
Of course, the weather is always a big topic of conversation in the United Kingdom. That’s because it is often unpredictable. It is certainly not “terrible” relative to many other places on the globe. Yeah, sure, terrible hot humidity in the summer if you want to look it in that way but rarely terrible in general even in the depths of winter relative to global standards. Only negative people will focus on the less good instead of the other way around.
Britain, England = terrible, hot, muggy, humidity in summer making 30C-40+C feel like 50’s C. Yeah, that’s terrible, agreed, for sure !
England and the UK are 2 totally separate countries when it comes to weather and the weather in England can be decent to superb in general, particularly between March / April through October or November. As was quoted on another site, there’s nothing like an English summer, which can be one of the best places to be out of anywhere when it’s really on point.
That great weather that happens in England can also occur at any time of year, including during winter, for given periods.
England summers can be and are hot, generally dry and sunny in eastern / central / southern England. The same weather can occur in the shoulder seasons as well, plus England generally has very pleasant spring and fall seasons, especially in the south and maintains enough sunshine throughout the winter in the year round warm south west England and English Riviera.
Yes, the summer humidity in England can be oppressive, especially for tourists who are not used to the generally very highly humid feeling summer heat that can occur in eastern, central, and southern England.
Plus, further to this, the generally dry climate of S E England / E England (East Anglia), can be really felt when you consider that these parts of England have areas classed as borderline semi -arid with less than 450mm / 17 inches of rainfall annually. Florida in the US had that same 17 inches within a 24 hour period again recently (June 2024), the same amount of rainfall that the drought prone / driest parts of England get in an entire year.
England’s climate and weather in general can be and is pretty great often at times (not always), in the warmer 9 months of the year.
Plus, London, for example, will have the climate of Barcelona in the near future.