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 19.7°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 |
|---|---|---|---|
| SEP 14 | 20.5°C | 21.0°C | |
| SEP 15 | 20.9°C | 21.0°C | |
| SEP 16 | 20.8°C | 21.0°C | |
| SEP 17 | 20.1°C | 21.0°C | |
| SEP 18 | 20.6°C | 21.0°C | |
| SEP 19 | 20.6°C | 21.0°C | |
| SEP 20 | 20.4°C | 21.0°C | |
| SEP 21 | 19.7°C | 21.0°C | |
| SEP 22 | 21.0°C | 19.8°C | |
| SEP 23 | 21.0°C | 19.8°C | |
| SEP 24 | 21.0°C | 19.9°C | |
| SEP 25 | 21.0°C | 20.0°C | |
| SEP 26 | 21.0°C | 20.0°C | |
| SEP 27 | 21.0°C | 20.1°C | |
| SEP 28 | 21.0°C | 20.2°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
September 22
September 23
September 24
September 25
September 26
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.