Water temperature in Mississauga (ON) in July

Is it warm enough to swim in Mississauga in July? Average water temperature in Mississauga in July is 19.8°C and therefore is not suitable for comfortable swimming. The warmest water in Mississauga in July is 24.8°C, and the coldest is 12.9°C. Average high air temperature in Mississauga in July is 27°C, and average low temperature is 16°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Mississauga

Changes water temperature in Mississauga in July 2025, 2024

To get an accurate forecast for the water temperature in Mississauga for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Mississauga, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of July.

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 July	17.5°C	14.4°C	12.9°C	19.6°C
2 July	16.9°C	15.4°C	13.7°C	19.9°C
3 July	17.2°C	16.4°C	13.7°C	21.2°C
4 July	17.1°C	17.5°C	14.1°C	21.9°C
5 July	17.5°C	17.2°C	14.4°C	22.4°C
6 July	18.9°C	18.5°C	14.3°C	22°C
7 July	18.5°C	18.1°C	15.8°C	22.7°C
8 July	18.8°C	17.4°C	15.8°C	22.1°C
9 July	19.9°C	20.6°C	15.1°C	22.9°C
10 July	19.8°C	20.4°C	15.3°C	23.8°C
11 July	20.3°C	20.3°C	16°C	24°C
12 July	23°C	20.5°C	16.9°C	23.3°C
13 July	23.7°C	21°C	16.4°C	23.7°C
14 July	23.5°C	21.4°C	16.4°C	23.5°C
15 July	23.6°C	21.8°C	16.6°C	24.2°C

Day	2025	2024	Min	Max
16 July	23.9°C	21.6°C	16.2°C	24.6°C
17 July	23.1°C	21.5°C	15.4°C	24.8°C
18 July	22°C	20.8°C	15.5°C	24.5°C
19 July	19.6°C	20.6°C	15.7°C	23.9°C
20 July	20.2°C	20.6°C	16.3°C	22.6°C
21 July	20.3°C	20.6°C	17.6°C	22°C
22 July	19.8°C	20.4°C	18.1°C	21.8°C
23 July	20.6°C	20.6°C	17.4°C	22°C
24 July	21°C	22.2°C	17.4°C	22.2°C
25 July	21.2°C	20.1°C	17.5°C	22.4°C
26 July	21.1°C	20.9°C	17.7°C	22.3°C
27 July	23°C	21.5°C	17.8°C	23°C
28 July	22.6°C	21.7°C	17°C	22.6°C
29 July	22.3°C	22.7°C	16.1°C	22.9°C
30 July	22.2°C	23.8°C	16.7°C	23.8°C
31 July	22.4°C	24.5°C	15.4°C	24.5°C

Average water temperature in Mississauga in July over a decade

2016	2017	2018	2019	2020
18.5°C	17.9°C	21.6°C	20.1°C	21.4°C

2021	2022	2023	2024	2025
19.4°C	18°C	20.9°C	20.2°C	20.7°C

Mississauga sea state in July

Chart comparing the height of waves in Mississauga in July over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Weather and climate in Mississauga in July

This data display average monthly climate indicators in Mississauga in July based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

Average HIGH temperature27°C
Average LOW temperature16°C
Average humidity
82
Average rainfall days10 days
Average rainfall3''/76mm
Average sunshine9.5h

Mississauga water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Temperature in neighboring cities

The nearest locations with the average water temperature in July. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

	Avr	Min	Max
Port Credit	20.1°C	13.3°C	25.2°C
Oakville	20.2°C	13.5°C	25.1°C
Sunnyside Beach	19.9°C	12.7°C	24.9°C
Humber Bay	19.9°C	12.7°C	24.9°C
Toronto Islands	20.3°C	13.6°C	25.3°C
Centre Island Beach	20.3°C	13.6°C	25.3°C
Hanlan's Point	20°C	12.8°C	25°C
Toronto	20.5°C	14.2°C	25.3°C
Cherry Beach	20.2°C	13.2°C	25.1°C
Woodbine Beach	20.3°C	13.8°C	25.1°C

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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.

Region

Date (day and month)

Water temperature: min 16°C

Average temperature Maximum temperature