Water temperature in St. Clair River (Port Lambton) (ON) in September

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Is it warm enough to swim in St. Clair River (Port Lambton) in September? Average water temperature in St. Clair River (Port Lambton) in September is 20.8°C and therefore suitable for comfortable swimming. The warmest water in St. Clair River (Port Lambton) in September is 25.4°C, and the coldest is 16.2°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in St. Clair River (Port Lambton)

Changes water temperature in St. Clair River (Port Lambton) in September 2025, 2024

To get an accurate forecast for the water temperature in St. Clair River (Port Lambton) for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in St. Clair River (Port Lambton), 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	20.1°C	23.9°C	20.1°C	24.9°C
2 September	20.6°C	23.2°C	20.2°C	24.5°C
3 September	21.1°C	21.9°C	19.7°C	24°C
4 September	21.2°C	21.3°C	19.7°C	24.9°C
5 September	20.2°C	21.7°C	19.7°C	25.4°C
6 September	19.8°C	22°C	19.8°C	25°C
7 September	19.4°C	21.4°C	19.4°C	24.1°C
8 September	18.6°C	20.3°C	18.6°C	23.4°C
9 September	18.6°C	19.8°C	18.6°C	23.7°C
10 September	19.3°C	19.3°C	18.6°C	23.5°C
11 September	19.1°C	19.8°C	18.5°C	23.2°C
12 September	19.6°C	20.2°C	18.8°C	22.8°C
13 September	20.4°C	21.2°C	18.9°C	22.5°C
14 September	19.8°C	21.5°C	19.4°C	22.5°C
15 September	20.6°C	21.5°C	19.3°C	22°C

Day	2024	Min	Max
16 September	21.8°C	19.2°C	21.8°C
17 September	22.1°C	18.5°C	22.1°C
18 September	22°C	18.6°C	22.3°C
19 September	22.3°C	18.4°C	22.4°C
20 September	22.1°C	18.1°C	22.2°C
21 September	22.6°C	18.5°C	22.6°C
22 September	22.3°C	17.4°C	22.3°C
23 September	21.6°C	17.4°C	22.3°C
24 September	22.5°C	17.1°C	22.5°C
25 September	21.1°C	16.8°C	22.1°C
26 September	20.8°C	16.7°C	23.5°C
27 September	20.5°C	16.5°C	22.9°C
28 September	20.3°C	16.3°C	22.1°C
29 September	20.1°C	16.3°C	20.5°C
30 September	19.9°C	16.2°C	19.9°C

St. Clair River (Port Lambton) water temp chart in September

Average water temperature in St. Clair River (Port Lambton) in September over a decade

2015	2016	2017	2018	2019
21°C	21.8°C	20.4°C	21.4°C	20.1°C

2020	2021	2022	2023	2024
20.3°C	21.4°C	21.2°C	20.5°C	21.4°C

St. Clair River (Port Lambton) 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
Goose Bay	20.4°C	16.2°C	24.8°C
Mitchell's Bay	21°C	16.2°C	25.7°C
Harrison Township	20.6°C	16.2°C	25°C
Anchor Bay	20.4°C	16.3°C	24.5°C
Grosse Pointe Farms	20.8°C	16.2°C	25.3°C
Belle Isle Park	20.8°C	16.2°C	25.2°C
Mount Clemens	20.6°C	16.2°C	25.3°C
Wheatley	21.7°C	17.4°C	25.4°C
Leamington	21.9°C	17.7°C	25.7°C
Kingsville	22°C	17.5°C	25.9°C

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Our report for St. Clair River (Port Lambton) 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