All data are in degrees Fahrenheit

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Water temperature in Toronto

Detailed information about the current water temperature in Toronto. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Water temperature in Toronto now

66.4

°F

September 8, 05:03

Trend:

stable

Yesterday:

66.3°F

Tomorrow:

65.9°F

Sunrise:

06:49

Sunset:

19:41

Day Length:

12 h. 52 min.

Toronto in September

Minimum:

36.3°F

Average:

38.5°F

Maximum:

39.7°F

Water temperature in Toronto today

As of now, in Toronto, the water temperature is 66.4°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 2.9°F lower than the average recorded on this particular day in recent years. The water temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to fall a bit.

Recent water temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 72.7°F on 2018, while the historical minimum was 65.4°F on 2017.

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the histoorical minimum and others when it was close to the historical maximum. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 65.1°F, the minimum temperature may reach 64.4°F, and the maximum might stay at 65.9°F.

Daily water temperature in Toronto

Date Current Year

actual* / forecast**

last year 10 years average
Aug 25 73.6°F 66.0°F 70.1°F
Aug 26 72.9°F 67.1°F 70.0°F
Aug 27 72.4°F 68.1°F 69.4°F
Aug 28 70.9°F 69.9°F 69.1°F
Aug 29 70.1°F 70.3°F 69.1°F
Aug 30 69.6°F 70.1°F 69.7°F
Aug 31 69.4°F 69.0°F 69.7°F
Sep 1 67.6°F 71.3°F 69.4°F
Sep 2 66.7°F 71.7°F 69.3°F
Sep 3 69.2°F 70.2°F 69.3°F
Sep 4 68.6°F 69.1°F 69.0°F
Sep 5 68.7°F 67.7°F 69.0°F
Sep 6 66.2°F 69.2°F 69.1°F
Sep 7 66.3°F 68.9°F 69.0°F
Sep 8 66.4°F 68.4°F 69.2°F
Sep 9 65.9°F 68.1°F 68.8°F
Sep 10 65.7°F 67.1°F 68.5°F
Sep 11 65.2°F 64.5°F 68.1°F
Sep 12 65.0°F 65.7°F 67.9°F
Sep 13 64.8°F 66.5°F 67.7°F
Sep 14 64.5°F 63.5°F 67.4°F
Sep 15 64.4°F 64.7°F 67.3°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Water temperature in Toronto by month

In an average year, Toronto offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Toronto was recorded on August 13, 2025, reaching a 77.6°F. While the coldest temperature occurred on February 20, 2015, dipping to 32.0°F. The average readings by season are 38.4°F in Winter, 40.2°F in Spring, 64.4°F in Summer, and 57.7°F in Autumn.