Water temperature in Kew Balmy Beach (ON) in September

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Is it warm enough to swim in Kew Balmy Beach in September? Average water temperature in Kew Balmy Beach in September is 19.7°C and therefore is not suitable for comfortable swimming. The warmest water in Kew Balmy 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 Balmy Beach

Changes water temperature in Kew Balmy Beach in September 2025, 2024

To get an accurate forecast for the water temperature in Kew Balmy 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 Balmy 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

Sea state

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	22.2°C
6 September		20.6°C	18.8°C	23.6°C
7 September		20.3°C	19.4°C	23.2°C
8 September		20°C	18.4°C	21.9°C
9 September		19.4°C	17.9°C	20.4°C
10 September		17.5°C	17.5°C	21.6°C
11 September		19°C	19°C	21.4°C
12 September		19.3°C	17.4°C	21.8°C
13 September		18.6°C	16.9°C	20.9°C
14 September		19.1°C	17.2°C	21.3°C
15 September		19.1°C	16°C	20.7°C

Day	2024	Min	Max
16 September	20°C	17.6°C	20.9°C
17 September	20.8°C	15.7°C	22.2°C
18 September	19.9°C	16.1°C	20.7°C
19 September	20.8°C	17.3°C	20.8°C
20 September	20.9°C	17.5°C	20.9°C
21 September	21.2°C	16.5°C	21.9°C
22 September	21°C	16.6°C	21.1°C
23 September	20.7°C	15.5°C	20.7°C
24 September	20.4°C	15.7°C	20.4°C
25 September	20.4°C	15.8°C	21.8°C
26 September	20.6°C	16.5°C	20.6°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

Kew Balmy Beach water temp chart in September

Average water temperature in Kew Balmy 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 Balmy 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
Mississauga	19.4°C	13.9°C	23.1°C
Niagara-on-the-Lake	19.9°C	13.6°C	23.5°C
Youngstown	20.7°C	16.1°C	24.1°C
Thorold	20.1°C	14.1°C	23.3°C
St. Catharines	20°C	13.7°C	23.3°C
Oakville	19.5°C	13.4°C	23.1°C
Oshawa	19.6°C	15.5°C	23.7°C
Grimsby	19.8°C	12.5°C	23.4°C
Olcott	20.4°C	16.4°C	24.1°C
Hamilton	19.6°C	13.4°C	23.7°C

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Our report for Kew Balmy 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