Yes, you can swim at several designated beaches on the Toronto Islands, provided the water quality is safe. In 2026, the primary swimming spots are Centre Island Beach, Ward's Island Beach, and Hanlan's Point Beach. These beaches are monitored by the City of Toronto for bacteria levels, and lifeguards are typically on duty from June through early September (Labor Day). Hanlan’s Point is unique as it includes a popular clothing-optional section. The water in Lake Ontario can be quite chilly even in the height of summer, often hovering around 18°C to 22°C (64°F to 72°F). Before jumping in, it is wise to check the "SwimGuide" or the City of Toronto’s beach water quality website, especially after heavy rainfall when runoff can temporarily make the water unsafe for swimming.