What is the current water temperature in Toronto?

Q: What is the current water temperature in Toronto?

As of now, in Toronto, the water temperature is 20.78°C. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool.

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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.

69.4

°F

September 12, 00:31

Trend:

stable

Yesterday:

69.4°F

Tomorrow:

69.5°F

Sunrise:

06:53

Sunset:

19:34

Day Length:

12 h. 41 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 69.4°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 2.5°F higher 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 stay about the same.

Recent water temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 71.6°F on 2016, while the historical minimum was 60.5°F on 2025.

latest data

last year

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 minimum recorded over the past years. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 69.5°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
Aug 29	64.9°F	70.1°F	69.6°F
Aug 30	64.1°F	69.6°F	69.9°F
Aug 31	64.4°F	69.4°F	69.6°F
Sep 1	64.9°F	67.6°F	69.3°F
Sep 2	66.1°F	66.7°F	69.2°F
Sep 3	66.5°F	69.2°F	69.2°F
Sep 4	66.6°F	68.6°F	68.8°F
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	66.9°F
Sep 12	69.4°F	60.5°F	66.9°F
Sep 13	69.5°F	62.2°F	67.0°F
Sep 14	69.4°F	62.0°F	66.8°F
Sep 15	69.4°F	63.2°F	66.9°F
Sep 16	69.4°F	64.5°F	66.9°F
Sep 17	69.4°F	64.9°F	66.9°F
Sep 18	69.5°F	65.7°F	67.0°F
Sep 19	69.7°F	66.2°F	67.2°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.