Water temperature in Kew Beach (ON) in September

Is it warm enough to swim in Kew Beach in September? Average water temperature in Kew Beach in September is 19.7°C and therefore is not suitable for comfortable swimming. The warmest water in Kew Beach in September is 23.6°C, and the coldest is 15.2°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Kew Beach

Changes water temperature in Kew Beach in September 2025, 2024

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

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 September	20.4°C	22.1°C	19°C	23.1°C
2 September	21.2°C	21.7°C	18.9°C	23°C
3 September	21°C	20.9°C	19°C	22.9°C
4 September	20.6°C	20.4°C	18.9°C	23.2°C
5 September		20.8°C	18.9°C	23.3°C
6 September		20.6°C	18.8°C	23.6°C
7 September		20.3°C	18.8°C	23.2°C
8 September		20°C	18.4°C	23°C
9 September		19.4°C	17.9°C	23°C
10 September		17.5°C	17.5°C	23.2°C
11 September		19°C	17.7°C	22°C
12 September		19.3°C	17.4°C	21.8°C
13 September		18.6°C	16.9°C	21.6°C
14 September		19.1°C	17.2°C	21.3°C
15 September		19.1°C	16°C	21.7°C

Day	2024	Min	Max
16 September	20°C	15.4°C	22.1°C
17 September	20.8°C	15.7°C	22.2°C
18 September	19.9°C	16.1°C	22.6°C
19 September	20.8°C	16.6°C	21.8°C
20 September	20.9°C	16.6°C	21.8°C
21 September	21.2°C	16.5°C	21.9°C
22 September	21°C	15.5°C	21.3°C
23 September	20.7°C	15.5°C	21.3°C
24 September	20.4°C	15.7°C	21.7°C
25 September	20.4°C	15.8°C	21.8°C
26 September	20.6°C	15.3°C	22.4°C
27 September	19.6°C	15.2°C	22.8°C
28 September	19.4°C	15.2°C	21.3°C
29 September	21°C	15.5°C	21°C
30 September	19.3°C	15.5°C	19.3°C

Average water temperature in Kew Beach in September over a decade

2015	2016	2017	2018	2019
20°C	21°C	19.8°C	21.3°C	19°C

2020	2021	2022	2023	2024
18.5°C	20.8°C	20.2°C	20.1°C	20.2°C

Kew Beach sea state in September

Chart comparing the height of waves in Kew Beach in September 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.

Kew Beach 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 September. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

	Avr	Min	Max
Kew Balmy Beach	19.7°C	15.2°C	23.6°C
Centre Island Beach	19.7°C	14.6°C	23.3°C
Sunnyside Beach	19.5°C	14.6°C	23.1°C
Humber Bay	19.5°C	14.6°C	23.1°C
Pickering	19.6°C	14.7°C	23.7°C
Port Credit	19.5°C	13.5°C	23.1°C
Mississauga	19.4°C	13.9°C	23.1°C
Niagara-on-the-Lake	19.9°C	13.6°C	23.5°C
Ajax	19.7°C	14.8°C	23.8°C
Port Whitby	19.6°C	15.2°C	23.7°C

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Our report for Kew Beach 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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Date (day and month)

Water temperature: min 16°C

Average temperature Maximum temperature