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

67.2

°F

September 19, 01:09

Trend:

increasing

Yesterday:

67.0°F

Tomorrow:

67.3°F

Sunrise:

07:01

Sunset:

19:21

Day Length:

12 h. 20 min.

Toronto in September

Minimum:

37.5°F

Average:

38.6°F

Maximum:

39.7°F

Water temperature in Toronto today

As of now, in Toronto, the water temperature is 67.2°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 about the same as the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to stay about the same.

Recent water temperature and forecast

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 73.5°F on 2018, while the historical minimum was 64.2°F on 2019.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 67.0°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Toronto

Date Current Year

actual* / forecast**

last year 10 years average
Sep 5 65.6°F 68.7°F 68.7°F
Sep 6 67.6°F 66.2°F 69.1°F
Sep 7 68.2°F 66.3°F 69.0°F
Sep 8 67.9°F 66.4°F 68.7°F
Sep 9 68.6°F 61.8°F 67.9°F
Sep 10 68.8°F 58.9°F 67.4°F
Sep 11 69.4°F 58.6°F 67.2°F
Sep 12 67.7°F 60.5°F 67.0°F
Sep 13 67.1°F 62.2°F 67.0°F
Sep 14 67.5°F 62.0°F 66.9°F
Sep 15 66.8°F 63.2°F 66.9°F
Sep 16 66.6°F 64.5°F 66.8°F
Sep 17 66.7°F 64.9°F 66.9°F
Sep 18 67.0°F 65.7°F 67.0°F
Sep 19 67.2°F 66.2°F 67.2°F
Sep 20 67.3°F 66.8°F 67.3°F
Sep 21 67.3°F 66.7°F 67.3°F
Sep 22 67.3°F 65.9°F 67.4°F
Sep 23 67.4°F 65.5°F 67.4°F
Sep 24 67.0°F 64.8°F 67.0°F
Sep 25 66.7°F 64.5°F 66.7°F
Sep 26 66.4°F 64.2°F 66.4°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 March 16, 2025, dipping to 33.0°F. The average readings by season are 38.3°F in Winter, 40.3°F in Spring, 64.5°F in Summer, and 57.9°F in Autumn.