Open Water Data

  • E. coli
    FAIL 225mpn Wed, Aug 13, 2025
  • Water Quality Status
    Failed tests Wed, Aug 13, 2025
  • Water Temperature
    26°C / 78.8°F (water) Wed, Aug 13, 2025
  • Air Temperature
    27.3°C / 81.1°F (air) Thu, Aug 14, 2025 at 3:00pm
  • Wind
    12.6 - 14.5km/h SE 144° Thu, Aug 14, 2025 at 3:00pm
  • Partly cloudy
    Partly cloudy Thu, Aug 14, 2025 at 3:00pm
  • Precipitation
    0mm Thu, Aug 14, 2025 at 3:00pm
  • Air Visibility
    16km Thu, Aug 14, 2025 at 3:00pm
  • Humidity
    48% Thu, Aug 14, 2025 at 3:00pm
  • Turbidity
    1NTU Wed, Aug 13, 2025
  • Clarity
    Cloudy Wed, Aug 13, 2025

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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