All data are in degrees Fahrenheit

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Water temperature in Mississauga

Detailed information about the current water temperature in Mississauga. 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 Mississauga now

69.1

°F

September 10, 23:53

Trend:

stable

Yesterday:

68.3°F

Tomorrow:

68.9°F

Sunrise:

06:52

Sunset:

19:38

Day Length:

12 h. 46 min.

Mississauga in September

Minimum:

37.3°F

Average:

38.5°F

Maximum:

39.6°F

Water temperature in Mississauga today

As of now, in Mississauga, the water temperature is 69.1°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 1.7°F higher than 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 fall a bit.

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 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 2016, while the historical minimum was 61.3°F on 2025.

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 68.8°F, the minimum temperature may reach 68.6°F, and the maximum might stay at 68.9°F.

Daily water temperature in Mississauga

Date Current Year

actual* / forecast**

last year 10 years average
Aug 27 68.0°F 72.4°F 70.2°F
Aug 28 65.8°F 71.3°F 69.8°F
Aug 29 64.5°F 71.3°F 69.8°F
Aug 30 65.1°F 70.2°F 70.0°F
Aug 31 65.8°F 69.6°F 69.7°F
Sep 1 66.6°F 69.5°F 69.7°F
Sep 2 67.2°F 69.1°F 69.4°F
Sep 3 67.6°F 69.6°F 69.4°F
Sep 4 65.2°F 69.9°F 68.8°F
Sep 5 66.1°F 69.5°F 68.7°F
Sep 6 66.7°F 68.0°F 69.0°F
Sep 7 68.5°F 68.1°F 69.3°F
Sep 8 68.5°F 68.1°F 69.0°F
Sep 9 68.3°F 66.2°F 68.3°F
Sep 10 69.1°F 61.3°F 67.4°F
Sep 11 68.9°F 59.4°F 67.1°F
Sep 12 68.9°F 60.0°F 67.1°F
Sep 13 68.7°F 61.3°F 66.9°F
Sep 14 68.7°F 61.9°F 67.0°F
Sep 15 68.7°F 62.7°F 67.0°F
Sep 16 68.9°F 64.3°F 67.1°F
Sep 17 68.6°F 64.8°F 66.8°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 Mississauga by month

In an average year, Mississauga offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Mississauga was recorded on August 13, 2025, reaching a 76.9°F. While the coldest temperature occurred on March 26, 2026, dipping to 33.8°F. The average readings by season are 38.3°F in Winter, 40.6°F in Spring, 64.8°F in Summer, and 57.9°F in Autumn.