Bere Island, Co Cork
Bere Island, Co Cork Courtesy Marie Cremin

Berehaven Harbour

📍 Castletownbere, Cork

🏛️ Attraction

Last updated: 28 April 2026

Overview

Berehaven Harbour, on the Beara Peninsula, is the second‑largest natural harbour in the world and the largest white‑fish port in Ireland. Its deep, calm waters shelter a busy fleet of fishing vessels, sailing yachts and a vibrant waterfront community. The harbour is a key stop on the Wild Atlantic Way, marked as a discovery point for travellers seeking authentic coastal charm, fresh seafood and easy access to the nearby islands.

Geography & Size

The harbour stretches roughly 9.5 km (6 mi) in length and 3 km (2 mi) in width, forming a protected basin between Bere Island and the mainland. Its sheltered position makes it one of the safest natural anchorages on the Irish coast, suitable for everything from small dinghies to former British dreadnoughts.

History & Background

The strategic importance of Berehaven dates back centuries. Its sheltered position made it a natural stronghold for the O’Sullivan Bere clan, who built Dunboy Castle to guard the harbour and control the lucrative sea‑fisheries. The 1602 Siege of Dunboy marked a turning point, after which the harbour continued to serve as a commercial hub for export and import trade.

In 1689 the Battle of Bantry Bay – often described as the greatest naval battle fought in Irish waters – raged just offshore, pitting the French against the British. A later French attempt to land troops in 1796 was thwarted by a storm, prompting the British to intensify fortifications around the bay.

During the 19th century the British Admiralty recognised Berehaven’s value and began a programme of coastal defences, including Martello towers and a network of gun batteries on Bere Island. The harbour remained a Treaty Port after the 1921 Anglo‑Irish Treaty, under British control until sovereignty was returned to Ireland in 1938. While the Admiralty planned anti‑submarine indicator loops in the late 1930s, the scheme was abandoned before World War II.

Lighthouse

At the entrance to the harbour stands Ardnakinna Lighthouse, constructed in 1850 and first lit in 1863. The stone tower still guides vessels entering the deep‑water anchorage and is a familiar landmark for locals and sailors alike.

Military History & Fortifications

Berehaven was one of two deep‑water Treaty Ports retained by the United Kingdom after the Anglo‑Irish Treaty of 1921. The British Admiralty planned anti‑submarine indicator loops for the harbour in the late 1930s, although the scheme was abandoned before World War II. The harbour’s strategic value attracted extensive fortification on nearby Bere Island. Notable sites include:

  • Lonehort Battery – the largest of seven gun batteries built around 1900, with two six‑inch coastal guns, underground tunnels and a dry moat. The northern section has been restored and is open for guided tours during Heritage Week.
  • Martello Towers – four stone towers erected in the early 19th century to defend the entrance to Bantry Bay.
  • Signal Tower – a Victorian‑era structure used for visual communications.

These fortifications underline why the harbour was a safe anchorage for British dreadnoughts and, later, for the US Navy during World War I.

Lonehort Battery – Restoration and Tours

The battery and its surrounding moat were completed by 1899, and two six‑inch guns were installed by 1903 (a larger 9‑inch gun followed in 1910). After decades of neglect, the Bere Island Projects Group secured a licence from the Department of Defence to restore the site. Since 2019 the northern section – containing the two remaining guns, guard house and underground stores – has been open to the public. Guided tours run during Heritage Week and on select weekends, offering insight into the battery’s role in protecting the harbour’s fleet.

What to See & Do

  • Ferry to Bere Island – Ferries depart from Castletownbere year‑round. Two operators run services:
    • Bere Island Ferries (tel: +353 27 75009) – departs from the RNLI station, 2 km west of town, to the west‑end of the island.
    • Murphy’s Ferry (tel: +353 86 2423140) – leaves from the pontoon on the Glengarriff side and lands at Rerrin on the east end. Both run on a first‑come‑first‑served basis, can carry cars, bikes and foot passengers, and the crossing takes about 15 minutes (west) or 25 minutes (east).
  • Water Sports – The harbour’s protected waters are ideal for sea angling, shore angling, kayaking, canoeing, dinghy sailing and scuba diving. Local operators offer guided trips and equipment hire.
  • Golf – Just outside town, Berehaven Golf Club offers a nine‑hole course with spectacular views of Bere Island and the harbour.
  • Seafood & Pubs – Castletownbere boasts several top‑quality seafood restaurants. A must‑visit is McCarthy’s Bar, immortalised in Pete MacCarthy’s book, for fresh catches, Irish stew and a locally brewed stout.
  • Historic Walks – Follow the Beara Way, a 120‑mile long‑distance trail that threads through the peninsula, passing the harbour, Dunboy Castle ruins, the Derreenataggart Stone Circle and the Cloontream wedge grave. The route offers panoramic vistas of the harbour and the surrounding Caha Mountains.
  • Market Square – On the first Thursday of each month the market square comes alive from 9:00 am to 2:30 pm, offering local produce, crafts and a taste of everyday life in a fishing town.
  • Cycling – The Beara Way Cycling Route (183 km) runs alongside the harbour, giving cyclists a scenic coastal ride with opportunities to stop for a coffee or a quick bite of fish and chips.

Wildlife & Water Activities

The deep, sheltered waters of Berehaven attract marine life. Regular sightings include bottlenose dolphins, common dolphins, occasional orcas, basking sharks and even the occasional whale. These make the harbour a popular base for wildlife‑watching tours, deep‑sea fishing trips and scuba‑diving excursions. The island’s parkrun, voted the most beautiful in the world, also draws runners keen to spot seals and seabirds.

Events & Festivals

  • Festival of the Sea – Early August, celebrating the town’s maritime heritage with music, food stalls and boat parades.
  • Bere Island Military Heritage Festival – August, featuring reenactments, guided tours of Lonehort Battery and Martello towers.
  • Bere Island Storytelling Festival – May, a weekend of oral history, music and traditional tales.
  • Bere Island Arts Festival – September, showcasing local artists, crafts and performances.
  • Midsummer Run – July, a community fun run on the island.
  • Monthly Market – First Thursday of each month, 9:00 am–2:30 pm.
  • Heritage Week – August, with special tours of historic sites and family‑friendly activities.

Getting There & Practical Tips

  • Driving – The harbour lies on the R572, about 51 km from Bantry and a 2‑hour drive from Cork City. Parking is available on the harbour promenade; it is free but can fill quickly during market days and festivals.
  • Public Transport – Bus 236 runs from Cork City (Parnell Place) to Castletownbere, taking roughly 3 hours. The town centre is a short walk from the bus stop to the harbour.
  • Ferry Details – Both ferry operators run year‑round, with the west‑end service taking ~15 minutes and the east‑end service ~25 minutes. No advance booking is required; queues are usually short in summer.
  • Accessibility – The promenade and ferry pontoon are wheelchair‑accessible with smooth surfaces and ramps.
  • Opening Hours – The harbour is open 24 hours; facilities such as the promenade, car parks and the ferry pontoon are accessible at all times.

Where to Stay

For a comfortable base, consider Berehaven Lodge (www.berehavenlodge.com), a 4‑star self‑catering residence overlooking the harbour and Bere Island. The lodge offers spacious lodges, cosy pods, a private beach, marina access and family‑friendly amenities such as a playground and babysitting services. It is a short 5 km drive from Castletownbere town centre.

Nearby Attractions

  • Dunboy Castle – Ruins of the 15th‑century O’Sullivan Bere stronghold, 2 km west of the harbour.
  • Derreenataggart Stone Circle – Pre‑historic stone circle, 8 km north.\n- Lonehort Battery – Largest WWI‑era gun battery on Bere Island, accessible via guided tours.
  • Martello Towers – Four early‑19th‑century towers on Bere Island, visible from the harbour.

Berehaven Harbour blends natural beauty, historic depth and modern vitality, making it an essential stop for anyone touring Ireland’s Wild Atlantic Way.