Can you swim in the Thousand Islands?

Water temperatures suitable for swimming are generally reached by June and continue through August. Swimming during the spring and fall in cold water can increase the risk of hypothermia. Be aware of hypothermia and how to treat it.



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Black bears and coyotes may be present in the park. They are most commonly observed on mainland properties, but have been found on the islands periodically. Read You are in Bear Country and Coyotes and Hiking Safety or get the information at the Visitor Centre. Please report all bear and coyote sightings to park staff.

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The Islands range in size from 50 square miles to just big enough to support a single tree, creating one of the most beautiful and varied landscapes in North America. The Islands have a mystical reputation, home to castles, lighthouses and secluded beaches, and should definitely be on your travel bucket list.

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Take a dip in the refreshingly crisp waters of the St. Lawrence River, or check out one of the area's many lakes.

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For your own safety, recreational activities such as swimming, water skiing, fishing, and diving are strictly prohibited in all Seaway canals, channels, pleasure craft docks, locks, weirs, and their approaches.

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Ways to tour Thousand Islands New York
  1. The Ultimate Heart of 1000 Islands Sightseeing Boat Tour. ...
  2. 3-Hour 1000 Islands Cruise from Gananoque with views of Boldt Castle. ...
  3. St Lawrence River - Rock Island Lighthouse on a Glass Bottom Boat Tour. ...
  4. Thousand Islands Two Castle Helicopter Tour.


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A group of Islands that were purchased by some of the wealthiest families in the late 1800's and early 1900's where they built lavish mansions that still stand today. Homes like Casa Blanca, Hopewell Hall, Win Lee Lodge, Long Vue the “Artificial” Island.

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The remote wilderness area of Admiralty Island lies just 15 miles off the coast of Juneau. Locally known as Fortress of the Bear, this large island is home to over 1,600 grizzly bears, one of the highest concentrations in the world with approximately one bear per square mile!

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Lighthouses, historic castles, maritime museums, world-class fishing and diving, quaint downtown shopping, on-the-water dining, family amusements and more make the 1000 Islands a destination that visitors come to again and again. Anywhere you go, the 1000 Islands is truly a fun and friendly destination.

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Halfway between Ontario's cities of Toronto and Ottawa, on the edge of the St Lawrence and Gananoque rivers, lies the picturesque town of Gananoque, the gateway to the 1000 Islands.

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Sitting directly below the summit of the towering 12,900ft. Banner Peak, Thousand Island Lake can be reached in a single day's hike via three different trails, each with a completely different adventurous look & feel. It's the quintessential High Sierra backpacking experienced, and you can do it in a single weekend.

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Voted as one of the cleanest beaches near NYC, Long Beach is a pay-to-visit beach that definitely deserves a day of your time. Long Beach itself is known as the “City by the Sea” thanks to their combination of great oceanside activities as well as their gorgeous waterfront beach.

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This incredible swim around a world reknowned icon in arguably the best city in the world wins you some serious bragging rights! The one mile course follows a counter clockwise direction around Liberty Island, providing an optimal experience of the Statue of Liberty from a swimmer's perspective.

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