September Weather Averages for London, United Kingdom

What's the Weather Like in London in September

Average Temperature

The weather starts to cool down in London, UK in September, when the autumn season is setting in. At this time of year, the average temperature is 16°C. As September progresses, the daily temperatures begin to decrease. If you're still searching for the summer sun, this month would be a great time to go on holiday further south in Europe, such as Majorca, where the temperature is a lot ...

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  • Temperature Temperature 17°C 61°F
  • High Temperature Holiday Weather 19°C 66°F
  • Low Temperature Holiday Weather 12°C 54°F
  • Sunshine Hours Sunshine Hours 5 hrs
  • Rainfall Rainfall 49 mm
  • Rainfall days Rainfall days 15 days

Daily September Averages for London

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Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
°C 16 16 17 17 17 16 16 16 16 16 16 15 16 16 15 15 15 15 15 15 15 13 13 15 15 14 14 15 16 14
°F 61 61 63 63 63 61 61 61 61 61 61 59 61 61 59 59 59 59 59 59 59 55 55 59 59 57 57 59 61 57

What's the Weather Like in London in September

Average Temperature

The weather starts to cool down in LondonUK in September, when the autumn season is setting in. At this time of year, the average temperature is 16°C. As September progresses, the daily temperatures begin to decrease. If you're still searching for the summer sun, this month would be a great time to go on holiday further south in Europe, such as Majorca, where the temperature is a lot warmer.

Daily Highs and Lows

On September 1stdaily high temperatures start off at 20°C and slowly fall until they reach 18°C by September 30th, rarely going over 23°C or dropping below 16°C. Similarly, the daily low temperatures also fall as the month progresses, starting at 15°C on September 1st before decreasing down to 12°C by September 30th, rarely going under 10°C or over 17°C.

Highest and Lowest recorded temperature

In recent times, the highest temperature which has ever been recorded in London in September is 30°C, with the lowest temperature ever recorded during this month being 7°C. When you look at these temperatures alongside the average for the month – 18°C – it's clear that they're the extremes and aren't what you should be prepared for during your holiday.


Despite being one of the warmest months of the year, September sees London experiencing 49mm of rainfall – that's 1mm more than August. With rain falling on an average of 15 days throughout the month, it's highly likely that you'll experience some type of precipitation at least once during your visit. Light rain is the most common type of rainfall you should expect which generally happens around September 10th.

The second most likely type of precipitation is moderate rain which usually occurs around September 6th. Overall, September 6th is most likely to be the wettest day of the month, with rain occurring on 49% of days during this time. On the other hand, September 23rd is most likely to be the driest day of the month, with precipitation making an appearance on 42% of days around this time.

The probability of London receiving some type of precipitation across September decreases as the month goes on. On September 1st, the chance of rainfall is 49% which gradually falls down to 42% by September 30th. If you don't want to risk any rain ruining your holiday, you're best off booking your visit for the final two weeks in September.

Cloud Cover

The median cloud coverage for London in September is 68% and gradually increases as the month progresses. On September 1st, the median cloud coverage starts off at 66%, before rising up to 68% by September 11th and rising once again to 70% on September 19th before making a small decrease down to 69% by September 30th. On average, London is affected by fog on less than one day each September.

Average Sea Temperature

London's closest coastal location enjoys an average sea temperature of 17°C – the same as the previous month. Despite being the highest sea temperature for the whole year, 17°C is very cool and will only really be enjoyed by the hardiest of swimmers. Spending any more than 10 or 20 minutes in the water will leave you feeling very cold.


Across September, the relative humidity for London fluctuates between 53% and 89%, rarely falling under 43% or exceeding 94%. You can expect the air to be at its driest on September 8th, when the relative humidity falls below 58% three days out of every four. On the other hand, the air is usually at its most humid around September 30th, when it rises above 85% three days out of every four.

Average Sunshine Hours 

Just like August, September sees London enjoying an average of six hours of sunshine each day. As the month progresses, the number of sunshine hours and daylight hours steadily decreases. Between the start and the end of the month, the day shortens by one hour and 52 minutes.

September 30th is the shortest day of the month with 11 hours and 39 minutes of daylight, whilst the longest day of the month is September 1st with 13 hours and 32 minutes of daylight. The earliest sunrise and latest sunset take place on September 1st at 6:13am and 7:45pm, respectively, whilst the latest sunrise and earliest sunset take place on September 30th at 7am and 6:39pm, respectively.


Throughout September, typical wind speeds tend to range from 1 m/s to 6 m/s, very rarely exceeding 8 m/s. The highest average wind speed of 4 m/s usually happens on September 6th when the average daily maximum wind speed is 6 m/s. The lowest average wind speed of 4 m/s usually occurs on September 25th, when the average daily maximum wind speed is 6 m/s. The most common wind direction for London in September is out of the south west, with the wind very rarely coming out of the south east.

London Hotels in September

The London Lodge Hotel

The London Lodge Hotel is one of the more luxurious sleeping options in the city. This Victorian town house-style hotel is located in a quiet part of the Kensington area, just a short walk away from the Royal Albert Hall, Victoria and Albert Museum, Hyde Park, Natural History Museum, Kensington Palace and Holland Park. Within the hotel you'll find Stefanie's Cafe-Bar which serves traditional full English breakfasts, as well as seasonal lunch and dinner options, bicycle rental, library, free WiFi accress throughout and paid private parking nearby.

The Z Hotel Victoria

The Z Hotel Victoria is a top pick for luxury without a huge price tag. Also built inside a Victorian townhouse, this hotel is just a stone's throw away from Buckingham Palace Road, Victoria Station and several local theatres. Guests can choose between double, queen and accessible rooms, each of which comes complete with free WiFi access, HD Sky TV, air conditioning/heating and private wet room with toiletries. Wheelchair accessible rooms are also available. Onsite amenities and services include Z Cafe which hosts breakfast buffets, sharing platters for lunch and alcoholic drinks on an evening plus free WiFi access throughout. 

The London House Hotel

London House Hotel is another complex which offers a bustling city location without a sky-high price. Located in Paddington, West London, this affordable hotel is close to the West End, Kensington, Notting Hill, Hyde Park, Paddington and Queensway. Here you'll find a vast array of rooms – including standard singles, small singles, lower ground twins, small doubles, standard doubles, garden view doubles, lower ground doubles, standard triples, lower ground family rooms and two-room family suites. You'll find loads of bars, restaurants, cafes, shops and supermarkets in the immediate area.

Bars and Restaurants 

La Scelta

La Scelta in Holloway, London is a fabulous option if you fancy heavenly Moroccan cuisine at an affordable price. Reviews for this eatery boast genuinely friendly staff and a homely, inviting environment. Fresh and beautifully prepared tagine dishes and soups, as well as highly recommended mint tea to accompany.

Cookhouse Joe

Head to Cookhouse Joe if you're looking for a place to eat that offers convenience and great value for money. Situated just off the main drag of Oxford Street, this hugely popular eatery serves up a delicious menu that combines Middle Eastern dining with Western influences. The halloumi wrap comes highly recommended as a delicious lunchtime treat. 

Banana Tree

If you're looking for exquisite Southeast Asian cuisine, head to Soho's Banana Tree. Situated on Wardour Street, this restaurant offers a variety of dishes and its menu is a real crowd-pleaser. You'll be greeted by friendly, knowledgeable staff who go out of their way to make you feel at home in the restaurant. It's a bit on the small side, but this adds to the homely ambiance of the place. 

Duck and Waffle

Foodies with a head for heights should book a table at the Duck and Waffle, which ranks as one of the most dizzying dining options in London. Situated on the 40th floor of the Heron Tower, the restaurant commands views over the City like no other, while the menu comprises a range of eating options to keep all diners pleased. 

Things to do in London in September 

Holland Park

Make the most of the last of the summer sunshine by spending the day at Holland Park. Kensington and Chelsea's largest park, Holland Park features 22.5 hectares of gardens, sports facilities, children's play areas, abundant woodland, oodles of wildlife and a cafeteria which serves food and drinks. The famous park also incorporates the Kyoto Garden – a Japanese garden which was donated by the Chamber of Commerce of Kyoto in 1991.

HMS Belfast

Families visiting London with young children should think about visiting HMS Belfast. This quirky museum is housed in the ship itself and is spread out over nine decks which focus on life on board the famous war ship during World War II and beyond. Popular with adults and children alike, HMS Belfast allows you to gain a unique insight into what life was really like during the war, with realistic lights, imagery, smoke effects, sounds, smells and vibrations creating an intense atmosphere akin to what the men in battle would have gone through. There are also various exhibitions highlighting what general life on the HMS Belfast was like, as well as displays detailing the inner workings of the ship and fascinating audio guides.


If you're travelling with older children and need to find a way to keep them entertained, consider spending the day at ClueQuest. This exciting activity is a live escape the room game for three to five people who have 60 minutes to make the most of their minds, logic and teamwork to solve puzzles and mysteries in order to escape the room. Since the puzzles are pretty tough, this game isn't suitable for anyone under 16 years old. Although the game is intended for groups of people, couples are still welcome to take part - the tasks will just be a bit harder. After you've escaped, you'll have the chance to buy personalised magnets and photos to remind you of your visit.

The Grant Museum of Zoology

The Grant Museum of Zoology is a must-visit for animal lovers during their visit to London. This popular attraction is the last remaining university zoological museum in the capital and is home to a staggering 67,000 specimens across the entire animal kingdom. The Grant Museum of Zoology was founded in 1828 as a teaching collection and has since expanded to include skeletons, mounted animals and specimens preserved in fluid, many of which are now endangered or even extinct. In addition to the permanent exhibitions, the museum also regularly features temporary displays, as well as hands-on opportunities, films and artwork.

Dates for the diary

The Totally Thames Festival

The Totally Thames Festival is a month long festival that takes place throughout September. The event attracts over 2 million Londoners and vistitors. It celebrates the Thames and its cultuaral diverstity along the 42 mile stretch of water. Just take a stroll along the river to see large scale art exhibitions, live performances, live classical music, concerts and boat races. This event is a reflection of London's strong identity of cultural diversity. 

September events in London


International London Tattoo Convention

1st September 2019 to 30th September 2019

The International London Tattoo Convention takes place at Tobacco Dock from midday until 2am on 26/09 and 27/09 and from midday until 8pm on 28/09. This convention is the most respected and prestigious body art convention in the world, featuring various celebrity guests amongst more than 300 unique tattoo artists. In 2014, the lengthy programme featured fuel girl performances, exotic dancers, belly-dancing, live music, tattoo exhibitions, pin-ups and food and drink kiosks. 2019 Dates TBA.


London Design Festival

14th September 2019 to 22nd September 2019

The London Design Festival celebrates and promotes London as one of the most creative cities in the world, with talks, product launches, events, exhibitions and loads more. Each year there are more than 300 different events and attractions to enjoy, from art galleries and exhibitions to meeting opportunities and shops.



Open Air Theatre

1st September 2019 to 30th September 2019

The Open Air Theatre at Regent’s Park is the only fully-professional, permanent outdoor theatre in Britain, established in 1932. A Midsummer Night’s Dream remains a signature piece in the varied repertoire, but each year a family-favourite musical or play is introduced to make the event something the whole family can really get into.



Mayor’s Thames Festival

1st September 2019 to 30th September 2019

The Mayor’s Thames Festival is one of Europe’s largest free open-air arts festivals. The 2014 edition of the festival featured the Thames’ first ever floating art fair, giant sculptures and the Thames' largest ever river race which saw 300 boats compete for first place. Other activities and events on the day include art events, theatre performances, street art, choir recitals, music concerts and the ever-popular circus. Tens of thousands of people get together to dance in the streets for the festival’s climatic event – the night carnival which incorporates fantastic costumes, music and dancing.


Angel Canal Festival

2nd September 2019

The Angel Canal Festival takes place in several locations around the City Road Lock, Basin and towpath close to the Regents Canal, as well as local streets and parks in Islington. There are loads of attractions to enjoy, including market stalls, fun fair, rides, bouncy castles, Punch and Judy, storytelling, boat trips, art workshops, painting displays, live music and street theatre. The Regatta with canoeing sessions and bell-boat racing is one of the highlights of the festival, as well as the penalty shoot outs and prize draws.



Tour of Britain

8th September 2019 to 15th September 2019

The Tour of Britain is Britain’s leading professional cycle race and the country's biggest free-to-watch sporting event. The race passes through loads of different locations throughout Britain, from the Grand Depart in Liverpool, via the Tumble in South Wales then onto Bristol and Brighton before ending in Central London. The Tour of Britain is made up of two separate races - a time trial and circuit race.


Great River Race

14th September 2019

The Great River Race, also known as London’s River Marathon, covers 21.6 miles, starting at the London Docklands and ending in Ham in Surrey. The race attracts around 300 crews each year who climb aboard all sorts of vessels, including Chinese dragon boats, Viking longboats and Hawaiian war canoes, to compete for first place.



Open House London

21st September 2019 to 22nd September 2019

The Open House London is the city's largest annual festival of architecture and design. The idea behind the event is to celebrate the neighbourhoods and buildings where Londoners live and work, by providing free unlimited access to more than 800 buildings, including 30 St Mary Axe, 10 Downing Street, Battersea Power Station and 100 private homes. Architecture-themed walks, debates and cycle rides will also be held during the event.



London Fashion Weekend

21st September 2019 to 24th September 2019

The London Fashion Weekend - Britain’s biggest biannual consumer fashion showcase - is held across four days at Somerset House in London. The programme features designer shopping, catwalk shows, temporary shops, and hair and beauty educational panels.



Maggie’s Culture Crawl

27th September 2019

Maggie’s Culture Crawl involves a 15-mile night-hike, packed with culture, discovery, architecture and surprise. The 2014 event passed by the following buildings: Foreign and Commonwealth Office, Fulham Palace, Chelsea Physic Garden, Serpentine Sackler Gallery, Foster + Partners Studio 1990 and Maggie’s West London. The date and route for 2015 has yet to be announced.


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