Killarney is one of Ireland’s most popular destinations, and September is one of the best times of year to visit. The summer crowds have thinned, the autumn colours are beginning to show, and the weather is still mild enough to enjoy outdoor adventures. If you are planning a trip to Kerry or driving the Ring of Kerry in September, Killarney should be at the top of your list.
Here are the top things to do around Killarney in September, including the unforgettable experience of taking the red boats out to Innisfallen Island.
1. Take a Boat Trip to Innisfallen Island
A visit to Killarney is not complete without stepping aboard the famous red boats on Lough Leane. These boats bring visitors across the lake to Innisfallen Island, a place filled with history, peace, and natural beauty.
On the island, you will find the ruins of a 6th-century monastery where the Annals of Innisfallen were written. The island is home to deer, birdlife, and quiet woodland walks, making it a perfect escape from the bustle of the town.
In September, the boat ride is especially beautiful as the early signs of autumn reflect across the water. The trip is short and relaxing, suitable for families, couples, and solo travellers.
Booking in advance is recommended, especially as September still draws many visitors to Killarney.
2. Explore Ross Castle
Standing on the shores of Lough Leane, Ross Castle is one of Killarney’s most iconic landmarks. Built in the 15th century, the castle is steeped in legend, including tales of O’Donoghue, who is said to ride out across the lake on a white horse.
You can take a guided tour of the castle to learn about life in medieval Ireland or simply walk the grounds and enjoy the lake views. Ross Castle is also where the red boats depart for Innisfallen Island, making it easy to combine both experiences.
3. Stroll Through Killarney National Park
Killarney National Park is stunning at any time of year, but in September, the early autumn colours add extra beauty to its woodlands, lakes, and mountains. You can take a leisurely walk or hire a bike to explore the trails.
Popular routes include the Muckross Lake Loop and the paths around Torc Waterfall. For those who want a relaxed outing, the park is also famous for its jaunting cars (horse-drawn carriages), which provide a charming way to see the scenery.
Another highlight in September is the rutting season of the red deer. The stags can be seen and heard as they compete for dominance, an unforgettable sound that carries across the park. If you take a boat trip that goes beyond Innisfallen towards Lord Brandon’s Cottage, you may even hear the calls of the stags echoing across the water.
4. Visit Muckross House and Gardens
Set within the national park, Muckross House is a 19th-century Victorian mansion that once hosted Queen Victoria. The house offers guided tours where you can see beautifully preserved rooms and hear stories of its history.
The surrounding gardens are a highlight in September, with late blooms and changing leaves adding colour to the landscape. From here, you can also walk down to Muckross Abbey, another historic site that is free to explore.
5. Drive Part of the Ring of Kerry
The Ring of Kerry is one of Ireland’s most famous drives, and Killarney is the perfect starting point. If you do not have time to complete the full loop, shorter sections are still worthwhile.
From Killarney, you can head towards Killorglin and onwards to Glenbeigh, where the beaches are quieter in September. Another option is to travel through the Gap of Dunloe area, combining the dramatic mountain scenery with a boat or jaunting car trip.
Driving in September means less traffic, so you can enjoy the views at a more relaxed pace.
6. Enjoy the Evenings in Killarney Town
After a day of exploring, the town of Killarney offers plenty of ways to relax. Traditional pubs host live Irish music sessions, while restaurants serve everything from hearty Irish dishes to modern cuisine.
In September, the evenings are lively but not overcrowded, making it a great time to enjoy the atmosphere.
Why September is a Great Time to Visit Killarney
- Fewer crowds: Attractions are easier to enjoy without peak-season queues.
- Mild weather: September often brings dry, pleasant days.
- Autumn scenery: The first signs of autumn colours make the landscape even more picturesque.
- Red deer rutting season: A natural event unique to this time of year, adding an unforgettable experience to your visit.
- Value: Accommodation rates are often better than in July and August.
Book Your Innisfallen Island Tour Today
If you are visiting Killarney this September, make sure to include a trip to Innisfallen Island on your itinerary. The red boats depart daily, giving you the chance to step back in time, explore the island’s history, and enjoy the peace of Lough Leane.
For those who want a longer adventure, take the extended tour to Lord Brandon’s Cottage, where you can experience the wild beauty of the upper lakes and may even hear the red deer during their rutting season.
Book your Innisfallen Island tour here and secure your place before you travel.
Questions about our September tours in Killarney
How long does the Innisfallen Island boat trip take?
The standard tour takes about 60 to 90 minutes. This includes the short crossing by red boat and time to explore the island at your own pace.
Where do the boats depart from?
The red boats leave from Ross Castle Pier on Lough Leane in Killarney National Park. There is parking nearby and it is a short walk from the castle grounds to the pier.
Do I need to book in advance for September?
Yes, we recommend booking ahead. September is still a busy month and places on the boats can fill up quickly. Booking online secures your preferred time.
Is the tour suitable for families and older travellers?
Yes. The boat ride is short and calm in normal conditions, and the paths on the island are mostly gentle. If mobility is a concern, get in touch before booking for advice.
Can I see wildlife on the tour?
Yes. Innisfallen Island is home to birdlife and native deer. In September, the red deer rut begins in Killarney National Park. During this season, stags can often be heard calling across the water and sometimes even from the boats on the longer trip towards Lord Brandon’s Cottage.
What should I bring on the boat?
Comfortable shoes are best for walking the island paths. Bring a light waterproof layer as the weather can change quickly. A camera or phone is recommended to capture the views and ruins.
Are there longer tours beyond Innisfallen Island?
Yes. We offer extended boat tours that continue towards Lord Brandon’s Cottage and the Upper Lakes. These tours are ideal for visitors who want to see more of Killarney’s wild landscapes. September is a great time to take this trip, with autumn colours and the sounds of the red deer rutting season adding to the experience.
