Ireland in September
September weather, activities, events & insider tips
September Weather in Ireland
Is September Right for You?
Advantages
- Autumn colors transform the countryside - beech and oak forests in counties Cork and Kerry reach peak golden hues by mid-September, creating impressive photography conditions
- Tourist crowds thin significantly after August bank holiday - major attractions like Cliffs Of Moher and Ring Of Kerry have 40% fewer visitors than peak summer
- Harvest season brings food festivals and fresh seasonal produce - September marks blackberry picking, apple harvesting, and the start of oyster season in Galway
- Accommodation prices drop 20-30% compared to July-August rates, with better availability at boutique hotels and B&Bs throughout the country
Considerations
- Unpredictable weather requires constant preparation - you'll experience four seasons in one day, with sunshine, rain, and wind within hours of each other
- Shorter daylight hours reduce sightseeing time - sunset moves from 8:30pm early September to 7:30pm by month's end, limiting evening outdoor activities
- Some seasonal businesses begin closing - smaller coastal attractions and tour operators in remote areas reduce hours or close after September 15th
Best Activities in September
Wild Atlantic Way Coastal Drives
September offers ideal conditions for Ireland's signature coastal route with clearer Atlantic views after summer haze clears. Autumn light creates dramatic photography conditions along the cliffs, while reduced traffic makes driving more enjoyable. Sea temperatures remain warm from summer (16°C/61°F) making coastal walks pleasant.
Dublin Literary and Pub Walking Tours
September's cooler temperatures (12-18°C/54-64°F) make walking tours comfortable, while frequent light drizzle adds authentic atmosphere to Dublin's literary heritage sites. Pub tours benefit from cozy indoor warmth, and September marks the start of traditional music session season in authentic pubs.
Kerry Way Hiking and Walking Routes
September provides optimal hiking conditions with cooler temperatures reducing exertion, while autumn colors enhance mountain scenery. Morning mists create mystical landscapes around lakes and valleys. Ground conditions are generally good before winter rains make trails muddy.
Aran Islands Cultural Experiences
September ferry services still run regularly with calmer seas than summer months, while traditional Irish culture is more authentic as tourist performances wind down. Sweater knitting workshops and Irish language sessions resume for local communities, offering genuine cultural immersion.
Galway Food and Market Tours
September harvest season brings peak produce to Galway's markets - fresh oysters begin their season, apples and root vegetables are at their best, and artisan food producers offer tastings. Cooler weather makes food walking tours more comfortable than summer heat.
Giant's Causeway and Antrim Coast Tours
September's dramatic skies and changing light conditions create spectacular photography at the basalt columns. Cooler temperatures make the cliff walks more comfortable, while autumn storms create impressive waves crashing against the rocks without the danger of winter conditions.
September Events & Festivals
All-Ireland Hurling and Football Finals
The climax of Ireland's national sports held at Croke Park, Dublin. These events showcase authentic Irish sporting culture with massive celebrations throughout the country. Even non-sports fans appreciate the cultural significance and community atmosphere.
Galway International Oyster Festival
World's oldest oyster festival marking the opening of native oyster season. Features oyster opening championships, traditional music, and seafood tastings. The festival celebrates Ireland's maritime heritage with authentic local participation.
Cork Jazz Festival
One of Europe's premier jazz festivals transforming Cork's pubs, hotels, and venues into intimate music spaces. September showcases both international acts and traditional Irish musicians, creating unique fusion performances.