Best Swimming Spots on Lake Muskoka (By Boat)

Lake Muskoka is 65 square kilometres of some of the clearest, cleanest water in Ontario. With a boat, the whole lake is yours to explore — and some of the very best swimming spots are only accessible by water. Here is our local guide to where to drop anchor and jump in.

The Islands Near Beaumaris

The stretch of lake between Beaumaris and Milford Bay is one of the quietest and most beautiful corners of Lake Muskoka. The rocky islands here are surrounded by crystal-clear, shallow water — ideal for swimming, snorkelling, and cliff jumping off the smooth granite. This area is far enough from the main boat traffic channels to feel genuinely peaceful, and the views of the lake from the water are spectacular. Anchor in a sheltered channel between two islands and you will have found one of Muskoka's best-kept secrets.

Bala Bay

Bala Bay at the northwest end of Lake Muskoka is a favourite for families. The bay is relatively sheltered from wind and wake, the water is warm and clear, and you can swim off the boat before walking into the village for lunch. There is a natural sandy bottom in parts of the bay, making it one of the more comfortable places on the lake to get in and out of the water. Arrive before 11am on busy summer weekends to find the best anchoring spots.

Gravenhurst Bay

Closer to Gravenhurst at the southern end of the lake, Gravenhurst Bay offers calm, protected water that heats up nicely through the summer season. The bay is popular with local families for exactly that reason — warm, shallow water that is ideal for younger swimmers. It is also the most convenient option if you are launching from the Gravenhurst area and want to spend the first part of the day closer to the dock.

Hidden Coves Along the North Shore

The north shore of Lake Muskoka is dotted with small coves that do not appear on any tourism map — you simply have to explore and find them. These spots tend to have the clearest water on the lake, cleaner granite rock faces to jump from, and complete seclusion from other boats. Follow the north shore slowly, look for sheltered inlets between rock outcroppings, and when you find one that feels right, drop anchor. This is what having a boat in Muskoka is really all about.

Sandy Bay, Near Port Carling

As you approach Port Carling from the south, the shoreline opens into a wider, calmer stretch of water with sandy-bottomed shallows that are perfect for wading and swimming with young children. The water is clear and the bottom is gentle underfoot — a rare combination on a lake that is mostly rock and granite. It makes a great mid-morning stop on a cruise up to Port Carling for lunch at the docks.

Tips for Swimming from a Rental Boat

Always put the boat engine in neutral before anyone enters the water. Keep a swim ladder deployed when swimmers are in the water — getting back on board is harder than it looks without one, and all our boats are equipped with them. Designate someone to stay on board as a spotter. In open water, never swim more than 30 to 40 feet from the boat. And always check for boat traffic before jumping in — even in quieter areas, other vessels can appear quickly.