Toronto — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Toronto, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Toronto today is 17.4°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 17 | 17.5°C | 17.5°C | |
| JUN 18 | 17.3°C | 17.5°C | |
| JUN 19 | 17.3°C | 17.5°C | |
| JUN 20 | 17.1°C | 17.5°C | |
| JUN 21 | 17.0°C | 17.5°C | |
| JUN 22 | 17.3°C | 17.5°C | |
| JUN 23 | 17.2°C | 17.5°C | |
| JUN 24 | 17.7°C | 17.5°C | |
| JUN 25 | 17.5°C | 17.6°C | |
| JUN 26 | 17.5°C | 17.8°C | |
| JUN 27 | 17.5°C | 17.9°C | |
| JUN 28 | 17.5°C | 18.1°C | |
| JUN 29 | 17.5°C | 18.3°C | |
| JUN 30 | 17.5°C | 18.5°C | |
| JUL 1 | 21.0°C | 18.7°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 0°C | 4°C | 7°C |
| February | 0°C | 2°C | 4°C |
| March | -1°C | 3°C | 6°C |
| April | 1°C | 7°C | 13°C |
| May | 8°C | 13°C | 18°C |
| June | 13°C | 18°C | 22°C |
| July | 16°C | 21°C | 26°C |
| August | 19°C | 23°C | 27°C |
| September | 16°C | 21°C | 26°C |
| October | 6°C | 14°C | 21°C |
| November | 4°C | 10°C | 16°C |
| December | 1°C | 5°C | 8°C |
Toronto: Weather Forecast
June 25
June 26
June 27
June 28
June 29
June 30
Location & Local Information
Toronto, located on the northwestern shore of Lake Ontario, offers a more temperate swimming experience compared to other parts of the Great Lakes. During the summer months, the water temperature in Lake Ontario can range from 70°F to 75°F (21°C to 24°C), making it relatively comfortable for swimming. On hotter days, the water might feel refreshingly cool, offering a great way to escape the summer heat. Many Toronto residents and visitors flock to the city’s beaches, such as Ontario Place, Hanlan's Point, and Woodbine Beach, where they can enjoy swimming, sunbathing, and beach activities.
While swimming in Lake Ontario is quite popular in the summer, it’s important to note that water quality can vary due to factors such as rainfall and water currents. Toronto's public beaches are regularly tested for safety, and advisories are issued when water quality is not ideal for swimming. The city's beaches are well-maintained, with lifeguards present at some locations during peak swimming hours, ensuring a safer experience for swimmers.
As the seasons change, water temperatures in Lake Ontario drop, typically reaching around 40°F to 45°F (4°C to 7°C) by late fall and winter. During these colder months, swimming becomes less common, and the lake can even freeze in certain areas. However, in the warmer months, Toronto's lakeside parks and beaches remain a popular destination for both locals and tourists seeking a refreshing swim and the opportunity to enjoy the natural beauty of the area.