Ireland in September greets you with comfortably mild days averaging 12–17 °C (54–63 °F), cooler evenings, and sunsets around 7:30–8 pm early in the month before days gradually shorten.
While light rain showers are still part of the Irish charm, they’re often balanced by crisp, dry spells that make walking city streets or hiking mountain trails a real pleasure.
Weather of Ireland in September: What to Expect
September still feels like summer, especially early in the month.
- Average temperatures: 12°C to 17°C (54°F to 63°F)
- Daylight: Around 12–13 hours
- Rainfall: 60–90 mm, slightly more variable as autumn approaches
Expect:
- Mild days with warm spells
- Some rainy days, especially later in the month
- Cooler evenings, especially in the countryside and along the coas
Always check Met Éireann for up-to-date local forecasts.
Is September a Good Time to Visit Ireland?
September is the unsung hero of Irish travel. You’ll find mild days, lower prices than peak summer, and landscapes that still look lush and green. The pace slows just enough to let you enjoy attractions without elbow-to-elbow crowds.
Things To Do in September
Drive the Wild Atlantic Way:
- Cliffs of Moher
- Galway City
- Inis Mór (Aran Islands)
If you’re a history or culture buff, visit:
- Blarney Castle (Cork)
- Rock of Cashel (Tipperary)
- Kilkenny Castle
Recommended Tours in September
If you’re based in Dublin:
If you’re exploring the west:
What to Pack for Ireland in September
Pack for changeable days — layers are your best friend.
- T-shirts and light sweaters
- Waterproof jacket or poncho
- Comfortable walking shoes and boots
- Scarf or light hat for cool mornings and evenings
- Umbrella or rain-resistant daypack
Key Events & Festivals in September
September still has a good share of festivals, just with a calmer vibe than summer.
- Dingle Food Festival – A must for foodies, with tastings and local producers
- Dublin Fringe Festival – Celebrates new theatre, comedy, and street performances
- Lisdoonvarna Matchmaking Festival – Famous traditional festival with music and dancing
- Culture Night (nationwide) – Free events, museum nights, and open studios
Find more inspiration on the Discover Ireland Events Calendar.
How Busy is Ireland in September?
September is quieter than July or August — but still lively, especially in Dublin and popular spots like Galway and Killarney.
- Expect smaller crowds at major sites like the Cliffs of Moher or the Giant’s Causeway.
- Festivals and Culture Night can draw local crowds — so plan ahead.
Hotel and Flight Prices in September
Prices ease compared to high summer.
- Flights: Often cheaper mid-September onwards. Use Skyscanner or Google Flights to find good deals.
- Accommodation: 10–20% lower than August. Use Booking.com or Airbnb.
Pros and Cons of Visiting Ireland in September (+ Solutions)
Pros:
- Fewer crowds, better prices
- Mild, pleasant weather
- Late-summer festivals still happening
- Beautiful light for photography
Cons & Fixes:
- More rain late in the month: Always pack layers and waterproofs.
- Shorter days: Plan outdoor trips earlier in the day.
- Some attractions with reduced hours: Double-check opening times in advance.
Getting Around Ireland in September
Car rental remains the most flexible way to see the countryside and smaller towns — check Discover Cars or Rentalcars.com.
Public transport:
- Bus Éireann for intercity and local routes
- Irish Rail for city-to-city travel
City transport:
- Walkable city centres
- Dublin’s Luas tram and bus system are easy to use
Fly into Dublin, Shannon, Cork, or Belfast.
