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Water temperature in Mississauga

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This data the coastal Mississauga water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current water temperature in Mississauga

Water temperature in Mississauga today is 20.8°C. Based on our historical data over a period of ten years, the warmest water in this day in the Lake Ontario near Mississauga was recorded in 2021 and was 22.8°C, and the coldest was recorded in 2017 at 18.5°C. Water temperature in Mississauga is expected to drop to 19.3°C in the next 10 days. September average water temperature in Mississauga is 19.4°C, the minimum temperature is 13.9°C, and the maximum is 23.1°C.

The swimming season in Mississauga lasts from July to September. During those months, Mississauga water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Mississauga in winter reaches 3.5°C, in spring 4.8°C, in summer the average temperature rises to 18.3°C, and in autumn it is 13.7°C.

Mississauga water temperature now


5 September 2025
today temp
20.8°C
4 September 2025
yesterday temp
21°C


Surf Forecast in Mississauga for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Mississauga. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Mississauga. Data in table shown for 5 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

0-3 h3-6 h6-9 h9-12 h
0' 8"0' 4"0' 6"1' 5"
0.2 m0.1 m0.15 m0.44 m
12-15 h15-18 h18-21 h21-24 h
2' 3"2' 9"2' 8"2' 0"
0.69 m0.84 m0.81 m0.61 m

Surf report in Mississauga

Mississauga wave height and direction

Mississauga weather forecast

Mississauga wind speed and direction

Current temperature and weather

Data in a table show Mississauga temperature today (5 September 2025). For more information and forecast for a few days, go to the weather forecast Mississauga.

0-3 h3-6 h6-9 h9-12 h
15.3°C15°C15.6°C16.3°C
12-15 h15-18 h18-21 h21-24 h
21°C23.2°C22.9°C19.5°C

You may also be interested in other sections of our site for Mississauga: Sunrise and Sunset, Tides

Mississauga water temperature by month

These figures shows the average, minimum and maximum monthly water temperature in Mississauga. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Mississauga on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

MonthAvrMinMax
January3.2°C1.4°C5.1°Ccold
Water temperature in Mississauga in January
February2.4°C-0.4°C4.5°Ccold
Water temperature in Mississauga in February
March2.6°C0°C5.9°Ccold
Water temperature in Mississauga in March
April4°C0.3°C6.5°Ccold
Water temperature in Mississauga in April
May7.9°C3.3°C16.9°Ccold
Water temperature in Mississauga in May
June14.1°C6°C20.6°Ccold
Water temperature in Mississauga in June
July19.8°C12.9°C24.8°Ccold
Water temperature in Mississauga in July
August21°C15.7°C24.7°Cwarm
Water temperature in Mississauga in August
September19.4°C13.9°C23.1°Ccold
Water temperature in Mississauga in September
October14.1°C6.1°C20.4°Ccold
Water temperature in Mississauga in October
November7.7°C4.1°C13.4°Ccold
Water temperature in Mississauga in November
December4.8°C2°C7.5°Ccold
Water temperature in Mississauga in December

Chart monthly average water temperature in Mississauga

Water temperature in Mississauga

Where is the warmest sea water in the world?

If you want to plan a vacation on the beach and enjoy the warm sea, choose the day of the year, region and the minimum comfortable sea/ocean temperature that interests you. As a result, you will get a list of countries and cities in which the average sea temperature or maximum temperature on this day over the past 10 years exceeds your chosen value

Region
Date (day and month)
Water temperature: min 16°C
 Average temperature  Maximum temperature

Nearby beaches and cities

The nearest beaches and cities from Mississauga with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

WaterWeatherWave
Port Credit20.9°C23°C0.54 m
Oakville21°C23°C0.37 m
Sunnyside Beach20.6°C24°C0.48 m
Humber Bay20.6°C24°C0.48 m
Toronto Islands20.8°C24°C0.53 m
Centre Island Beach20.8°C24°C0.53 m
Hanlan's Point20.6°C24°C0.53 m
Toronto20.8°C24°C0.53 m
Cherry Beach20.6°C24°C0.53 m
Woodbine Beach20.6°C24°C0.57 m

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Mississauga is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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