Inis Mór (also known as Inishmore) is the largest of the Aran Islands and one of Ireland’s most unique coastal destinations. If you’re wondering what to do in Inis Mór, you’ll find dramatic Atlantic cliffs, ancient stone forts, clear waters, quiet cycling routes and a strong island character that hasn’t changed much in generations.
Whether you’re visiting for a day trip or staying a little longer, here’s a local guide to the best things to do in Inis Mór and around the Aran Islands.
Cycling is one of the most popular things to do in Inis Mór. The roads are quiet, the distances manageable, and the views stretch across limestone fields and open Atlantic coastline.
Bike hire is available near Kilronan Pier, making it easy to explore at your own pace.
Perched on high cliffs above the Atlantic Ocean, Dún Aonghasa is one of Ireland’s most impressive prehistoric stone forts. The walk up is part of the experience, and the views from the edge are unforgettable.
If you only see one historic site on Inis Mór, make it this one.
If you prefer a relaxed way to explore the island, a guided bus tour is a popular option. Local drivers share stories about the history, culture and landscape of Inis Mór while stopping at key highlights such as Dún Aonghasa and scenic coastal viewpoints.
Bus tours are ideal for visitors short on time or those who prefer not to cycle, offering a comfortable way to see the main sights in a few hours.
Scuba diving in the Aran Islands reveals underwater walls, kelp forests and Atlantic wildlife. Conditions vary, but visibility can be excellent on the right day.
At Dive Aran, we run small group boat dives as well as beginner-friendly sessions for those trying scuba diving for the first time.
If you’re not a certified diver, snorkelling in Inis Mór is a great way to experience the water safely. Guided snorkelling sessions are suitable for beginners and families and offer a relaxed introduction to the island’s marine environment.
Sea kayaking lets you explore the island’s cliffs and hidden corners from sea level. It’s a calm, scenic way to see a different side of Inis Mór and is suitable for beginners in suitable conditions.
The Aran Islands are home to Atlantic grey seals, seabirds and a unique limestone ecosystem. Along the southern coast of Inis Mór, you may spot seals resting on rocks during low tide.
The island’s wild landscape is part of what makes it special open skies, sea air and uninterrupted coastal views.
Got the Question? We've got answers
Cycling, visiting Dún Aonghasa, scuba diving, snorkelling, kayaking and coastal walks are among the most popular activities on Inis Mór (Inishmore).
Yes. Guided beginner sessions are available and no previous certification is required for introductory experiences.
A day trip allows you to see the main highlights, but staying overnight gives you more time to explore properly and experience water activities.
Late spring through early autumn offers the most reliable weather for outdoor activities and diving in the Aran Islands.
It ranges from around 10°C (50°F) in spring to 19°C (70°F) in late summer.
Visibility can range from 5 metres (17 feet) to over 20 metres, depending on conditions.
The weather in Ireland can be unpredictable, but the Aran Islands enjoy more sunny days than the mainland thanks to their westerly position in the Atlantic. This unique location makes them less affected by the cloud cover and rain that often passes over the rest of Ireland.
