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Best Swimming Spots Accessible by Boat in Sydney

Sydney Harbour hides dozens of beaches, coves, and swimming holes that most people never see — because the only way to reach them is by boat. These boat-access-only spots offer clear water, sandy bottoms, and a level of seclusion that the famous ocean beaches simply cannot match. If you have access to a boat, these are the swimming spots that will make you feel like you have the harbour to yourself.

What are the best boat-access-only swimming spots in Sydney?

The best boat-access swimming spots in Sydney include Store Beach near the Quarantine Station, Collins Beach below the Q Station, Castle Rock Beach in Middle Harbour, Reef Beach near Balgowlah, and several secluded coves in the national park areas of the harbour. Each offers something different — from pristine sand to calm rock pools — and all share the common advantage of being unreachable without a vessel.

For boat club members on Sydney Harbour, these swimming spots are among the top reasons to get on the water. A boat turns the harbour from a visual backdrop into an immersive experience, and there is nothing quite like anchoring in a quiet bay, stepping off the back of the boat, and swimming to a beach that has no road, no car park, and no crowds.

Where is Store Beach and how do I get there by boat?

Store Beach is widely regarded as one of Sydney Harbour's finest hidden beaches. Located on the southern side of North Head within Sydney Harbour National Park, it faces south-west across the harbour and is completely inaccessible by road.

How to get there: Approach from the harbour, rounding the headland south of Manly. The beach sits in a small, sandy-bottomed bay with depths of 2 to 4 metres at the anchorage. Sand bottom provides good holding.

What to expect: A beautiful crescent of golden sand, backed by bush. The water is clear and calm in settled conditions. The beach is popular with kayakers and snorkellers, and the rocky edges of the bay support marine life including blue gropers and other reef species.

Crowd level: Moderate on weekends, quiet on weekdays. Because there is no road access, it never gets the overcrowded feel of popular ocean beaches.

Water quality: Excellent in settled conditions. Can be affected by turbidity after heavy rain.

Facilities: None. No toilets, no water, no shade structures. Bring everything you need, including sun protection.

Is Collins Beach worth the trip?

Collins Beach is a small, sheltered beach located below the Q Station (former Quarantine Station) near Manly. It is one of the harbour's most secluded swimming spots, tucked into a narrow bay with bushland on all sides.

How to get there: Approach from North Harbour or Manly Cove. The beach sits in a narrow inlet — navigate carefully and anchor in the small bay. Depths are shallow (1 to 3 metres), so approach slowly and watch your depth sounder.

What to expect: A tiny, intimate beach with calm, clear water. The overhanging trees provide natural shade, and the lack of access keeps it quiet. Historical significance adds to the atmosphere — Collins Beach was named after Captain David Collins, and the area has a connection to the early colonial period.

Crowd level: Low. Even on busy weekends, Collins Beach rarely has more than a handful of visitors.

Water quality: Very good. The sheltered position and lack of stormwater outlets keep the water clean.

What makes Castle Rock Beach special?

Castle Rock Beach is one of Middle Harbour's gems — a small sandy beach accessible only by water or a steep bush track. It sits on the northern shore of Middle Harbour, surrounded by bushland and sandstone outcrops.

How to get there: Enter Middle Harbour through The Spit Bridge and head north. Castle Rock Beach is on the left-hand shore, roughly midway between The Spit and Bantry Bay. Anchor in the small bay fronting the beach in 2 to 4 metres.

What to expect: A compact, sandy beach with clear water and a backdrop of natural bush. The sandstone rock formations that give the beach its name are impressive and fun to explore. The swimming is excellent, with calm, clean water.

Crowd level: Moderate on weekends, particularly in summer. Very quiet on weekdays.

Water quality: Middle Harbour generally has excellent water quality, and Castle Rock is no exception. One of the best swimming spots in Sydney by boat for consistently clean water.

Where is Reef Beach and can I anchor there?

Reef Beach sits between Balgowlah Heights and Forty Baskets Beach, on the northern side of the harbour. It is partly accessible by a walking trail but much easier to reach by boat.

How to get there: Approach from the harbour, heading east from The Spit or west from Manly. The beach faces south-west and is identifiable by its sandy shore and reef-like rock platforms.

What to expect: A medium-sized sandy beach with interesting rock formations. The swimming is good, and the rock platforms offer pools to explore at low tide. Note that Reef Beach has historically been used as an unofficial clothing-optional beach — be aware and respectful.

Crowd level: Variable. Quieter than the main harbour beaches but busier than the more remote spots.

Water quality: Good, though it can be affected by runoff after rain.

Anchoring: Possible in calm conditions in the bay, but the bottom can be rocky in places. Use a trip line on your anchor.

What about Camp Cove for swimming?

Camp Cove at Watsons Bay is not strictly boat-access-only — it has a small road and car park — but it is vastly easier and more enjoyable to reach by boat. The beach is one of the harbour's most popular swimming spots, with calm water, clean sand, and views across to Manly and North Head.

How to get there: Anchor in the bay off Camp Cove in 2 to 5 metres. Sand bottom. Swim or tender to the beach.

What to expect: A wide sandy beach with calm, shallow water. The grassy park behind the beach has toilets, a small cafe, and shade. From Camp Cove, you can walk up to South Head for spectacular views of the harbour entrance.

Crowd level: High on summer weekends. The car park fills and the beach gets busy. Arriving by boat avoids the parking problem and lets you swim away from the crowd.

Water quality: Generally very good. Camp Cove is tested regularly and consistently rates well.

Where is Milk Beach and is it easy to access by boat?

Milk Beach is tucked below Strickland House in Vaucluse, facing north across the harbour. It is a small, sandy beach that can be reached by a steep walking track or — far more conveniently — by boat.

How to get there: Anchor off the beach in 3 to 5 metres. The bottom is sand and weed. Swim or tender in.

What to expect: A small, picturesque beach with views of the Harbour Bridge and Opera House in the distance. The water is clean and the setting is beautiful. The heritage-listed Strickland House sits above the beach.

Crowd level: Moderate. It is known enough to attract regular visitors, but never overwhelmingly busy.

Water quality: Good.

What should I know about Lady Bay Beach?

Lady Bay Beach (also known as Lady Jane Beach) is located south of Camp Cove, near South Head. It is Sydney's most well-known clothing-optional beach and has been so for decades.

How to get there: By boat, approach from the harbour and anchor in the small bay. Depths are 3 to 6 metres, with a rocky bottom in places. Alternatively, there is a walking track from Camp Cove.

What to expect: A small, rocky beach with clear water. The swimming is good, and the location beneath the towering cliffs of South Head is dramatic. Be aware of the clothing-optional status.

Crowd level: Moderate on warm days. Quieter in the cooler months.

Are there good swimming spots in Middle Harbour beyond Castle Rock?

Yes, Middle Harbour has several excellent swimming spots accessible by boat.

• Bantry Bay — The calm, clean water is perfect for swimming. Anchor and swim from the boat or to the small shore clearing.
• Sugarloaf Bay — Wide, calm bay with clean water. Great for a relaxed swim.
• Sailors Bay — The upper reaches have calm water suitable for swimming, with the Northbridge Baths at the head of the bay.
• Clontarf — A popular swimming spot with a beach, swimming enclosure, and barbecue facilities.

The full Middle Harbour boating guide details all the swimming options in this area.

What should I bring for a swimming-focused boating day?

Planning a day around swimming from the boat is one of the best ways to enjoy Sydney Harbour. Here is what to bring:

• Snorkelling gear — Many of the harbour's swimming spots have rocky edges with excellent marine life.
• Reef shoes — Some beaches have rocky entries. Reef shoes protect your feet.
• Sun protection — Sunscreen, hats, rashies. The harbour reflects UV, increasing sun exposure.
• Fresh water — For rinsing off salt water.
• Picnic or lunch — Most of these spots have no food outlets. Pack a hamper.
• Anchor ball or float — Helps you find your anchor when it is time to leave.
• Towels — More than you think you need.
• A ladder — If your boat does not have a swim platform or boarding ladder, bring one. Getting back on the boat after a swim should be easy, not an ordeal.

For families considering boating with kids in Sydney, the boat-access beaches are particularly appealing — calm water, no rips, and a sense of adventure that children love.

Frequently Asked Questions

Is it safe to swim in Sydney Harbour? Yes. Sydney Harbour water quality has improved dramatically over recent decades, and the boat-access beaches are among the cleanest spots. Avoid swimming after heavy rain, when stormwater runoff can temporarily reduce water quality.

Are there sharks in Sydney Harbour? Bull sharks and other species are present in Sydney Harbour, but encounters with swimmers are extremely rare. The harbour has been swum in safely for over a century. If you are concerned, swim in shallow water close to the beach.

Can I take my dog to these swimming spots? National park beaches generally do not allow dogs. Check the specific rules for your destination. Some harbour beaches outside the national park are dog-friendly at certain times.

Do I need a permit to anchor at these beaches? No permit is required for short-term anchoring at most harbour beaches. Observe any local signage and do not anchor in restricted zones or over seagrass beds.