British Isles itinerary — September 2026
For the British Isles trip (London, Dublin & Edinburgh), September 2026 is a comfortable month by weather. Daytime highs run from about 17°C / 63°F to 20°C / 68°F across the stops. Plan around 7–9 days for the full London, Dublin & Edinburgh loop.
In this order — about 7–9 days:
- London3 nightsUnited Kingdom
- Dublin2 nightsIreland
- Edinburgh2 nightsUnited Kingdom
- Route noteReserve the longest intercity leg first and keep transfer days free of timed sights.
By TripSapien Research · Updated May 20, 2026
London
London in September
TempTemperature
66°F / 53°F
19.1°C / 11.7°C
RainPrecipitation
15d
1.8in · 45.8mm
LightDaylight
13.6h
September is shoulder season, with State Rooms still open early month and strong weather for Greenwich and South Bank walks.
City overview
London sits on the River Thames, where Westminster, the City, South Kensington, Camden, Shoreditch, Notting Hill, Greenwich, Mayfair, and Covent Garden compress royal government, finance, museums, markets, theatre, and immigrant food into one transport map. The Tube, Elizabeth Line, National Rail terminals, and river piers make the city work as a set of village-like districts rather than one walkable center.
Food & drink
London food spans fish and chips, full English breakfasts, Sunday roasts, pie and mash, Brick Lane curry houses, salt-beef beigels, jellied eels, and modern pub dining. Borough Market, Brick Lane, Chinatown, Brixton Village, Broadway Market, and Southall are the first food map rather than one single restaurant row.
Events & festivals
- Sep 1 – Sep 30
- Sep 1 – Oct 1
- Sep 1 – Oct 1
- Sep 1 – Oct 1
- Sep 1 – Oct 1
- Sep 1 – Sep 11
Show all 23 events for September
- Sep 1 – Sep 30
Totally Thames Festival 2026
A month-long celebration of the River Thames with art, music, talks, walks, and community events along the river.
Planning lead · dates set closer in · Source: festival research
- Sep 2 – Sep 20
Harry Potter and the Cursed Child - Parts 1 & 2 Wed 14:00 & 19:00
Arts & Theatre · Theatre.
Source: Ticketmaster
- Sep 3 – Sep 20
- Sep 4
- Sep 8 – Sep 19
- Sep 9 – Sep 20
BFI London Film Festival 2026
The UK's largest public film event, screening new films from around the world at various venues across London.
Planning lead · dates set closer in · Source: festival research
- Sep 12 – Sep 20
Source: TripSapien festival dataset
- Sep 12 – Sep 13
Waterworks is back in Gunnersbury Park in London with 70+ artists playing bass, house, and techno during this single day fest.
Source: TripSapien festival dataset
- Sep 12 – Sep 16
London Fashion Week 2026 (September)
A major fashion industry event showcasing the latest collections from British and international designers.
Planning lead · dates set closer in · Source: festival research
- Sep 16 – Oct 1
- Sep 18 – Sep 20
This black metal festival takes place in various venues across 3 days in Camden Town.
Source: TripSapien festival dataset
- Sep 18
- Sep 19 – Oct 19
Horror Film Festival in Great Britain.
Source: TripSapien festival dataset
- Sep 19 – Sep 20
There will be political rebels, Nobel Laureates, best-selling authors, live headlining bands and more in store at this 2-day festival.
Source: TripSapien festival dataset
- Sep 19 – Sep 20
Open House London 2026
A weekend event offering public access to many of London’s architecturally significant buildings, many normally closed to the public.
Planning lead · dates set closer in · Source: festival research
- Sep 23
- Sep 24 – Sep 26
AVA, the beloved Northern Irish festival comes to London this March.
Source: TripSapien festival dataset
Top sights
Ranked for September suitability using weather, setting, ratings, and review volume.
- 1Victoria and Albert Museum
- 2National Gallery
- 3British Museum
- 4Westminster Abbey
- 5Natural History Museum
- 6Tower Bridge
- 7Tower of London
- 8Buckingham Palace State Rooms
- 9Tate Modern and Millennium Bridge
- 10Houses of Parliament and Big Ben
1Victoria and Albert Museum
4.8★ · 66,846indoorOpen dailyThe V&A in South Kensington holds decorative arts, fashion, sculpture, photography, Islamic art, cast courts, theatre collections, and design objects. It sits beside the Natural History Museum and Science Museum.
Wikipedia
2National Gallery
4.8★ · 61,432indoorOpen dailyThe Trafalgar Square museum opened in 1838 and holds Van Eyck, Leonardo, Titian, Velazquez, Rembrandt, Turner, Monet, Van Gogh, and Seurat. Charing Cross and Leicester Square stations are short walks away.
Wikipedia
3British Museum
4.7★ · 172,964indoorOpen dailyThe Bloomsbury museum opened to the public in 1759 and displays Egyptian mummies, the Rosetta Stone, Assyrian reliefs, Greek sculpture, prints, coins, and global archaeology. Tottenham Court Road and Holborn stations are the easiest Tube approaches.
Wikipedia
Show 7 more sights
- 4Westminster Abbey
- 5Natural History Museum
- 6Tower Bridge
- 7Tower of London
- 8Buckingham Palace State Rooms
- 9Tate Modern and Millennium Bridge
- 10Houses of Parliament and Big Ben
Neighborhoods
1Westminster and St James's
Westminster is ceremonial and governmental, with Parliament, Westminster Abbey, Whitehall, St James's Park, Buckingham Palace, and The Mall in one high-security walking zone.
2South Kensington and Chelsea
South Kensington is museum-heavy, with the V&A, Natural History Museum, Science Museum, Royal Albert Hall, Exhibition Road, and Chelsea streets nearby.
3Covent Garden and Soho
Covent Garden and Soho are theatre-and-nightlife dense, with Seven Dials, Neal's Yard, Chinatown, Carnaby Street, West End theatres, and late restaurants.
4Camden and Regent's Canal
Camden is market-led and music-linked, with Camden Lock, Regent's Canal, Roundhouse, street food, tattoo shops, and walks toward Primrose Hill.
5Shoreditch and the City
Shoreditch adds Brick Lane curry houses, street art, Spitalfields Market, bars, and tech offices beside the City's St Paul's, Bank, Leadenhall Market, and skyscrapers.
6Notting Hill and Kensington
Notting Hill has pastel terraces, Portobello Road market, Carnival history, bookshops, and quick access to Kensington Gardens and Holland Park.
Getting around
Transport for London runs the Tube, Elizabeth Line, Overground, DLR, buses, trams, river buses, and contactless/Oyster fares with daily caps. Use the Tube for cross-core trips, the Elizabeth Line for Heathrow and east-west speed, buses for short central hops, and National Rail terminals for day trips.
Dublin
Dublin in September
TempTemperature
63°F / 48°F
17°C / 9.1°C
RainPrecipitation
10d
2.4in · 60mm
LightDaylight
12.4h
Sea
58.3°F
14.6°C
September is shoulder season, good for university-area walks and coastal trips after school-holiday demand eases.
City overview
Dublin sits on the River Liffey where Georgian squares, Viking-medieval lanes, literary pubs, Trinity College, the Liberties, Temple Bar, Smithfield, and St Stephen's Green make a compact city-center route. The city works best on foot, with DART coastal trains and Luas trams extending the map to Howth, Dun Laoghaire, and the docklands.
Food & drink
Dublin food is pub, market, and coast-fed: a full Irish breakfast plates sausage, bacon, eggs, pudding, beans, and tomato, Irish stew slow-cooks lamb or mutton with potatoes, seafood chowder uses Atlantic shellfish, and boxty turns potato into pancakes. The Brazen Head, Moore Street, George's Street Arcade, Temple Bar Food Market, Capel Street, and Howth seafood stops add soda bread, fish and chips, oysters, and Guinness pours.
Events & festivals
- Sep 1 – Sep 6
- Sep 1 – Sep 5
- Sep 2
- Sep 2
- Sep 3
- Sep 3
Show all 40 events for September
- Sep 4
- Sep 4
- Sep 5
- Sep 5
- Sep 6 – Sep 7
- Sep 6
- Sep 7
- Sep 8 – Sep 19
- Sep 9 – Sep 20
Dublin Fringe Festival 2026
An annual multi-arts festival showcasing new theatre, dance, music, and visual arts performances across Dublin.
Planning lead · dates set closer in · Source: festival research
- Sep 9
- Sep 10
- Sep 10
- Sep 11 – Sep 12
- Sep 11
- Sep 12 – Sep 13
Dublin Bay Prawn Festival 2026
A seafood festival celebrating Dublin Bay prawns with tastings, cooking demonstrations, and family activities.
Planning lead · dates set closer in · Source: festival research
- Sep 12
- Sep 13
- Sep 14
- Sep 15 – Oct 1
- Sep 16
- Sep 17
- Sep 18
- Sep 19 – Sep 20
Open House Dublin 2026
A weekend event offering free access to architecturally and historically significant buildings across Dublin.
Planning lead · dates set closer in · Source: festival research
- Sep 20
- Sep 21
Kyle Dixon & Michael Stein - Perform the Music of Stranger Things
Arts & Theatre · Espectaculo.
Source: Ticketmaster
- Sep 22
- Sep 23
- Sep 24 – Oct 11
Dublin Theatre Festival 2026
Ireland’s oldest theatre festival featuring international and Irish theatre productions in venues across Dublin.
Planning lead · dates set closer in · Source: festival research
- Sep 25
- Sep 26
- Sep 27
- Sep 28
- Sep 29
- Sep 30
Top sights
Ranked for September suitability using weather, setting, ratings, and review volume.
- 1Phoenix Park
- 2Trinity College and Book of Kells
- 3Guinness Storehouse
- 4Dublin Castle
- 5Kilmainham Gaol
- 6National Museum of Ireland - Archaeology
- 7EPIC The Irish Emigration Museum
- 8Christ Church Cathedral
- 9St Patrick's Cathedral
- 10Temple Bar
1Phoenix Park
4.7★ · 41,576outdoorOpen dailyThe 707-hectare park dates to the 1660s and holds Dublin Zoo, the Papal Cross, Wellington Monument, deer herds, and the Irish president's residence. It begins west of Heuston Station.
Wikipedia
2Trinity College and Book of Kells
4.4★ · 18,993outdoorOpen dailyTrinity College was founded in 1592, and the Old Library holds the Book of Kells, Long Room, manuscripts, and university history. The campus sits beside College Green and Grafton Street.
Timed Book of Kells tickets are safest during summer and holiday weekends.
3Guinness Storehouse
4.4★ · 24,803outdoorOpen dailyThe St James's Gate visitor experience opened in a former fermentation plant and explains brewing, advertising, cooperage, and Guinness history. The Gravity Bar gives rooftop views over the Liberties.
Wikipedia
Show 7 more sights
- 4Dublin Castle
- 5Kilmainham Gaol
- 6National Museum of Ireland - Archaeology
- 7EPIC The Irish Emigration Museum
- 8Christ Church Cathedral
- 9St Patrick's Cathedral
- 10Temple Bar
Neighborhoods
1Temple Bar and College Green
Temple Bar and College Green are central and busy, with pubs, Trinity College, the Irish Whiskey Museum, cobbles, buskers, and river crossings.
2St Stephen's Green and Grafton Street
The southside shopping-and-park district has Grafton Street, Georgian doors, Iveagh Gardens, Little Museum of Dublin, and Merrion Square nearby.
3The Liberties
The Liberties is old and working-class, with Guinness, whiskey distilleries, St Patrick's Cathedral, Francis Street antiques, Thomas Street, and market streets.
4Smithfield and Stoneybatter
Smithfield and Stoneybatter mix the Jameson Bow St. distillery, Lighthouse Cinema, cafes, pubs, apartments, and quick access to Phoenix Park.
5Docklands and Grand Canal Dock
The Docklands feel newer, with EPIC, Samuel Beckett Bridge, Bord Gáis Energy Theatre, tech offices, canals, and riverfront walks.
6Rathmines and Portobello
Rathmines and Portobello are local and food-heavy, with canals, cinemas, pubs, brunch spots, and red-brick residential streets south of the core.
Getting around
Dublin Bus, Luas trams, DART coastal rail, commuter rail, and Leap cards cover the useful visitor network. Walk the center, use Luas for Heuston-Smithfield-Docklands, and use DART for Howth, Malahide, and Dun Laoghaire.
Edinburgh
Edinburgh in September
TempTemperature
62°F / 47°F
16.6°C / 8.6°C
RainPrecipitation
10d
2.2in · 55mm
LightDaylight
12.4h
Sea
57.4°F
14.1°C
September calms after the festivals, with good light for Leith, Stockbridge, and Arthur's Seat.
City overview
Edinburgh sits between Castle Rock, Arthur's Seat, and the Firth of Forth, with Old Town closes, New Town crescents, Leith waterfront, Stockbridge streets, Bruntsfield cafes, and Calton Hill viewpoints forming a compact but steep city. Its August festival season changes the city more completely than any single attraction.
Food & drink
Edinburgh food is Scottish staples with a strong pub map: haggis is minced offal, oats, and spice served with neeps and tatties, Cullen skink is smoked-haddock soup, and cranachan folds cream, oats, raspberries, honey, and whisky into dessert. Grassmarket pubs, Stockbridge Market, Leith's Shore restaurants, New Town whisky bars, and chip shops add Scotch pies, shortbread, drams, and fish suppers.
Events & festivals
- Sep 1 – Sep 7
Edinburgh Festival Fringe 2026 (final days)
The world’s largest arts festival featuring thousands of performances in theatre, comedy, dance, and music across the city.
Planning lead · dates set closer in · Source: festival research
- Sep 2
- Sep 4 – Sep 28
Edinburgh International Festival 2026
A world-renowned festival featuring opera, theatre, music, and dance performances by international artists across various venues in Edinburgh.
Planning lead · dates set closer in · Source: festival research
- Sep 4
- Sep 5
- Sep 5
Show all 40 events for September
- Sep 5
- Sep 6
A celebration of psychedelic music & arts in the heart of Edinburgh brought to you by the team behind Manchester Pysch Fest.
Source: TripSapien festival dataset
- Sep 6
- Sep 6
- Sep 8
Michael Shannon & Jason Narducy and Friends Play R.e.m.âS ÂLife's
Music · Rock.
Source: Ticketmaster
- Sep 9
- Sep 9
- Sep 11 – Sep 20
Edinburgh Jazz & Blues Festival 2026
A vibrant festival celebrating jazz and blues music with concerts, workshops, and club nights at venues throughout the city.
Planning lead · dates set closer in · Source: festival research
- Sep 11
- Sep 11
- Sep 12
- Sep 12
- Sep 12
- Sep 14
- Sep 15
- Sep 17
- Sep 17
- Sep 18
- Sep 18
- Sep 19 – Sep 20
Edinburgh Doors Open Days 2026
An annual event offering free access to many historic and architecturally significant buildings in Edinburgh, often with guided tours and talks.
Planning lead · dates set closer in · Source: festival research
- Sep 19
- Sep 20
- Sep 20
- Sep 22 – Sep 26
- Sep 22
- Sep 23
- Sep 23
- Sep 25
- Sep 25
- Sep 26
- Sep 26
- Sep 27
- Sep 29
- Sep 29
Top sights
Ranked for September suitability using weather, setting, ratings, and review volume.
- 1Arthur's Seat and Holyrood Park
- 2Calton Hill
- 3Royal Mile
- 4Princes Street Gardens and Scott Monument
- 5Edinburgh Castle
- 6Palace of Holyroodhouse
- 7National Museum of Scotland
- 8Royal Yacht Britannia
- 9Scottish National Gallery
- 10Camera Obscura and World of Illusions
1Arthur's Seat and Holyrood Park
4.8★ · 4,771outdoorThe extinct volcano rises 251m above the city, with paths from Holyrood, Duddingston, and the Salisbury Crags. Views reach the Castle, Firth of Forth, and Pentland Hills.
2Calton Hill
4.8★ · 6,446outdoorThe hill east of Princes Street has the National Monument, Nelson Monument, Dugald Stewart Monument, and one of the classic skyline views toward the Castle and Arthur's Seat. It is a short climb from Waterloo Place.
Wikipedia
3Royal Mile
4.7★ · 23,477outdoorThe Old Town spine runs from Edinburgh Castle to Holyrood Palace through Lawnmarket, High Street, Canongate, closes, churches, pubs, and souvenir shops. It is steep, crowded, and central to most first-time walks.
Wikipedia
Show 7 more sights
- 4Princes Street Gardens and Scott Monument
- 5Edinburgh Castle
- 6Palace of Holyroodhouse
- 7National Museum of Scotland
- 8Royal Yacht Britannia
- 9Scottish National Gallery
- 10Camera Obscura and World of Illusions
Neighborhoods
1Old Town
Old Town is medieval and vertical, with the Royal Mile, Grassmarket, Greyfriars, Victoria Street, closes, pubs, ghost tours, and festival venues.
2New Town
New Town is Georgian and ordered, with Princes Street, George Street, Queen Street Gardens, galleries, shopping, and hotels.
3Leith
Leith is port-city and food-led, with the Shore, Royal Yacht Britannia, Water of Leith paths, seafood restaurants, pubs, and tram links.
4Stockbridge
Stockbridge is village-like, with Sunday market, Raeburn Place, Dean Village access, Water of Leith walks, and independent shops.
5Bruntsfield and Morningside
Bruntsfield and Morningside are local and cafe-heavy, with Meadows access, cinemas, bakeries, bookstores, and tenement streets.
6Southside and Marchmont
Southside and Marchmont are student-and-festival districts, with University of Edinburgh buildings, the Meadows, theatres, pubs, and August venues.
Getting around
Lothian Buses, Edinburgh Trams, airport tram service, and contactless day caps cover most visitor moves. Walk the Old Town-New Town core, use trams for airport-Leith links, and expect steep climbs between Waverley, the Royal Mile, and the Castle.
Planning the British Isles route?
Add your dates and we'll pace all 3 cities — every place checked for closures, limited hours, and booking needs in September.
Weather by month for the British Isles trip
In September, the British Isles trip runs daytime highs from 17°C / 63°F to 20°C / 68°F, with nights down to about 9°C / 48°F at the coolest stop. Climate averages show about 10 rainy days at the rainiest stop. Weighed across all 3 stops, September is a comfortable month by weather.
The most comfortable months across London, Dublin & Edinburgh are August, July and June, based on average daytime temperatures and rainfall at every stop. September 2026 is a comfortable month.
Common questions about the British Isles trip
- When is the best time to do the British Isles trip?
- The most comfortable months across London, Dublin, Edinburgh are August, July and June, based on average daytime temperatures and rainfall at each stop. September is a comfortable month by weather — see the per-stop weather below for the climate averages in September 2026.
- How many days do you need for the British Isles trip?
- A comfortable British Isles trip runs about 7–9 days, allowing roughly London 3, Dublin 2, Edinburgh 2 nights plus travel between stops. Add a day if you want a slower pace or extra day trips.
- What's the route for the British Isles trip?
- The classic order is London, Dublin & Edinburgh. Each city below has its own September weather, any available event listings, and a top-sights list.
Ready to plan the British Isles trip?
Turn this route into a day-by-day plan for September 2026, every stop checked for closures and booking needs on your exact dates.