Things to Do in Ireland in September
September weather, activities, events & insider tips
September Weather in Ireland
Is September Right for You?
Advantages
- Summer crowds have cleared out but temperatures remain mild - you'll actually get decent photos at the Cliffs of Moher without 200 people in the background, and accommodation prices drop by 20-30% compared to July and August
- Harvest season brings food festivals across the country, particularly the Galway International Oyster Festival, and pub menus shift to heartier seasonal dishes like boxty and colcannon that locals genuinely eat rather than tourist-menu standards
- Daylight still stretches to around 7:30pm early in the month, giving you proper time to explore after a late lunch, though it does drop to 7pm by month's end - still workable for evening coastal walks
- September typically sees more settled weather patterns than July or August, with fewer of those horizontal rain systems that make the west coast genuinely miserable - you'll still get rain, but it tends to be lighter and shorter
Considerations
- Weather remains genuinely unpredictable - you might experience four seasons in a day, which sounds charming until you're caught in a downpour at the Ring of Kerry with only a hoodie because it was sunny an hour ago
- Some seasonal attractions start reducing hours or closing mid-month, particularly smaller heritage sites and island ferries to places like Skellig Michael, which often stops running after mid-September depending on sea conditions
- University term starts late September, which means Dublin, Galway, and Cork get noticeably busier with students, affecting accommodation availability and pub atmosphere in those cities specifically
Best Activities in September
Cliffs of Moher Coastal Walks
September offers the best visibility for coastal cliff walks - the summer haze clears but you're not yet into the worst of the Atlantic storm season. The Cliffs of Moher Coastal Walk (14 km or 8.7 miles from Doolin to Hags Head) becomes genuinely manageable when you're not fighting through tour groups. Early morning visits around 8-9am give you the cliffs practically to yourself, and the light is spectacular for photography. The grass is still relatively dry underfoot compared to winter months, though proper walking boots remain essential.
Traditional Music Sessions in Galway and Clare
September marks when traditional music sessions return to their authentic local rhythm after the summer tourist peak. The Galway International Oyster Festival in late September brings exceptional sessions, but even regular Tuesday nights in Doolin or Ennis feel different when the ratio shifts back toward locals. Sessions typically start around 9:30pm and the music quality genuinely improves when musicians are playing for each other rather than performing for crowds.
Ring of Kerry Driving Routes
The 179 km (111 mile) Ring of Kerry becomes infinitely more pleasant in September when tour bus traffic drops by roughly half. You'll actually be able to stop at viewpoints like Ladies View without circling for parking, and small villages like Sneem and Waterville return to their normal pace. The heather is still blooming on the hillsides, creating that purple-tinged landscape that looks almost artificial in photos. Plan for 5-6 hours minimum, though 8 hours lets you actually enjoy it rather than just drive.
Whiskey Distillery Tours
September is actually ideal for distillery visits because you're indoors for the guided portions but can enjoy outdoor elements like the grounds at Midleton or Bushmills without the summer heat. The Jameson Distillery in Dublin, Teeling Distillery, and Midleton in Cork all run regular tours, typically 90 minutes including tastings. The cooler weather makes the tasting room experience more comfortable, and guides have more time to engage when groups are smaller.
Aran Islands Day Trips
Ferry services to the Aran Islands (Inishmore, Inishmaan, Inisheer) continue through September with better reliability than later autumn months when Atlantic swells increase. Inishmore's Dun Aengus fort, perched 100 m (328 ft) above the ocean, offers spectacular views when visibility is good, which September provides more consistently than summer. The 45-minute ferry from Rossaveal runs multiple times daily, and you'll have 4-5 hours on the island - enough for fort visits, cycling the island (14 km or 8.7 miles of roads), and lunch.
Giant's Causeway and North Coast Exploration
The 40,000 interlocking basalt columns of Giant's Causeway are far more enjoyable in September when you're not navigating through peak summer crowds. The coastal walk from the visitor center down to the stones (1.6 km or 1 mile round trip) remains manageable in September weather, though the stones themselves get slippery when wet - which happens about 10 days this month. Combine with Carrick-a-Rede rope bridge (20 m or 66 ft above the rocks) and the Dark Hedges for a full North Coast day.
September Events & Festivals
Galway International Oyster Festival
Held annually since 1954, this late September festival (typically last full weekend) celebrates the opening of oyster season with shucking competitions, seafood trails, and genuinely excellent traditional music sessions. The festival draws around 20,000 visitors but maintains a local feel - you'll see Galway residents in attendance, not just tourists. Oysters are served with Guinness or champagne at venues across the city, and the World Oyster Opening Championship on Saturday afternoon is worth attending even if you don't eat oysters.
All-Ireland Football and Hurling Finals
While the actual finals occur in early September at Croke Park in Dublin (typically first two Sundays), the atmosphere across Ireland during September remains charged if you're in counties whose teams made it through. Pubs show replays, and locals will happily explain the rules if you ask. Getting tickets to the finals themselves requires advance planning through the GAA, but watching in a pub gives you the cultural experience without the logistics.
Dublin Fringe Festival
Running for roughly three weeks from early to mid-September, the Fringe Festival brings experimental theater, comedy, music, and performance art to venues across Dublin. Over 500 performances happen in spaces ranging from traditional theaters to pubs to outdoor locations. It's a genuine arts festival rather than tourist entertainment, with locals making up the bulk of audiences. Individual show tickets typically run 12-20 euros.