Open Water Data

Sunnyside Beach

Toronto, Ontario, Canada

Data Sources
  • E. coli
    PASS 68mpn Mon, Sep 1, 2025
  • Water Quality Status
    Passed tests Wed, Sep 3, 2025 at 5:46am
  • Water Temperature
    15°C / 59°F (water) Mon, Sep 1, 2025
  • Air Temperature
    20.4°C / 68.7°F (air) Tue, Sep 30, 2025 at 2:00pm
  • Wind
    16.2 - 18.6km/h E 93° Tue, Sep 30, 2025 at 2:00pm
  • Sunny
    Sunny Tue, Sep 30, 2025 at 2:00pm
  • Precipitation
    0mm Tue, Sep 30, 2025 at 2:00pm
  • Air Visibility
    14km Tue, Sep 30, 2025 at 2:00pm
  • Humidity
    60% Tue, Sep 30, 2025 at 2:00pm
  • Turbidity
    0.6NTU Mon, Sep 1, 2025
  • Clarity
    None Mon, Sep 8, 2025

Photo by Grant MacDonald

Opened in the roaring 1920s, Sunnyside Beach was the place Torontonians came to play for decades.  This waterfront icon played host to bathers, concerts, tightrope-walkers and even an amusement park.  The Palais Royale was one of Toronto’s most popular dance halls, featuring jazz greats like Duke Ellington and Count Basie. In 1954, sixteen-year old Marilyn Bell ended her historic first swim across Lake Ontario nearby.  Not long after that, the Gardiner Expressway went up and the amusement park came down.  Today, you can still use the Sunnyside Bathing Pavilion and swim in the pool (aka, “The Tank”), have drinks and a bite to eat on a patio overlooking the beach, and of course, have a splash in Lake Ontario.

Sunnyside Beach is one of two pilot and assessment locations for the City of Toronto’s Artificial Intelligence Predictive Modeling (AIPM) of bacterial levels.

The description above was copied from or heavily based on Swim Guide, with permission.

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