
Ireland itinerary — September 2026
For the Ireland trip (Dublin & Galway), September 2026 is a comfortable month by weather. Daytime highs run from about 16°C / 61°F to 17°C / 63°F across the stops. Plan around 5–7 days for the full Dublin & Galway loop.
In this order — about 5–7 days:
- Dublin3 nights
- Galway2 nights
- Route noteReserve the longest intercity leg first and keep transfer days free of timed sights.
By TripSapien Research · Updated May 20, 2026
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.
Galway
Galway in September
TempTemperature
62°F / 51°F
16.8°C / 10.6°C
RainPrecipitation
19d
3.1in · 77.5mm
LightDaylight
13.7h
Sea
59.4°F
15.2°C
Oyster and autumn food demand rises as weather grows more unsettled.
City overview
Galway is Ireland's Atlantic city of Latin Quarter streets, trad-music pubs, university energy, harbor walks, festivals, and day trips into Connemara, the Aran Islands, and the Cliffs of Moher. Weather changes quickly in every month, so the best pages need rain-aware plans, festival timing, and realistic day-trip buffers.
Food & drink
Galway is strong on seafood, oysters, pub food, bakeries, modern Irish restaurants, and late-night casual eating around Quay Street and the West End. Autumn brings oyster demand, while summer festival periods make small central dining rooms fill quickly.
Events & festivals
- Sep 2
- Sep 4
- Sep 4
- Sep 11
- Sep 11
- Sep 11
Show all 18 events for September
- Sep 12
- Sep 13
- Sep 17
- Sep 18
- Sep 19
- Sep 22
- Sep 23
- Sep 24
- Sep 25 – Sep 27
Galway International Oyster and Seafood Festival
Planning lead · dates set closer in · Source: TripSapien festival dataset
- Sep 25
- Sep 25
- Sep 27
Top sights
Ranked for September suitability using weather, setting, ratings, and review volume.
- 1Traditional Music Pubs
- 2Galway Cathedral
- 3St Nicholas Collegiate Church
- 4Eyre Square
- 5Salthill Promenade
- 6Latin Quarter & Quay Street
- 7Galway Arts Festival Venues
- 8Spanish Arch & Galway City Museum
1Traditional Music Pubs
4.7★ · 2,591indoorOpen dailyNightly music around the Latin Quarter and West End, with the best sessions requiring patience and respectful listening.
2Galway Cathedral
4.6★ · 6,339indoorOpen dailyLarge mid-20th-century cathedral with dome, stone interior, and riverside approach.
Wikipedia
3St Nicholas Collegiate Church
4.6★ · 716indoorOpen dailyMedieval church in the old core, tied to the city's merchant history and market streets.
Show 5 more sights
- 4Eyre Square
- 5Salthill Promenade
- 6Latin Quarter & Quay Street
- 7Galway Arts Festival Venues
- 8Spanish Arch & Galway City Museum
Neighborhoods
1Latin Quarter
Tourist core for pubs, music, restaurants, shops, and late-night energy.
2West End
Restaurants, bars, music pubs, and a more local evening scene across the Corrib.
3Salthill
Seafront promenade, hotels, cafes, swimming spots, and Galway Bay views.
4Eyre Square
Transport-linked central base with hotels, shops, and the quickest route into the old streets.
5Claddagh
Historic fishing-village area at the river mouth, good for harbor walks and sunset views.
6University / Newcastle
Student energy, canal walks, hospital area, and quieter stays west of the Corrib.
Getting around
Central Galway is walkable, with rail and bus arrivals beside Eyre Square. Use buses, tours, ferries, or a car for Connemara, the Aran Islands, and the Cliffs of Moher; leave slack for wind, rain, and ferry or road delays.
Planning the Ireland route?
Add your dates and we'll pace all 2 cities — every place checked for closures, limited hours, and booking needs in September.
Weather by month for the Ireland trip
In September, the Ireland trip runs daytime highs from 16°C / 61°F to 17°C / 63°F, with nights down to about 9°C / 48°F at the coolest stop. Climate averages show about 15 rainy days at the rainiest stop. Weighed across both stops, September is a comfortable month by weather.
The most comfortable months across Dublin & Galway are July, June and August, based on average daytime temperatures and rainfall at every stop. September 2026 is a comfortable month.
Common questions about the Ireland trip
- When is the best time to do the Ireland trip?
- The most comfortable months across Dublin, Galway are July, June and August, 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 Ireland trip?
- A comfortable Ireland trip runs about 5–7 days, allowing roughly Dublin 3, Galway 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 Ireland trip?
- The classic order is Dublin & Galway. Each city below has its own September weather, any available event listings, and a top-sights list.
Ready to plan the Ireland 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.