Water temperature in Colpoy's Bay (ON) in August

Is it warm enough to swim in Colpoy's Bay in August? Average water temperature in Colpoy's Bay in August is 20.7°C and therefore suitable for comfortable swimming. The warmest water in Colpoy's Bay in August is 23.8°C, and the coldest is 16.8°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Colpoy's Bay

Changes water temperature in Colpoy's Bay in August 2025, 2024

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

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 August	21.1°C	22.1°C	17.6°C	22.1°C
2 August	20.9°C	22.6°C	18.2°C	22.6°C
3 August	20.9°C	22.9°C	18.3°C	22.9°C
4 August	21.1°C	23.2°C	18.5°C	23.2°C
5 August	21.2°C	23.1°C	18.7°C	23.1°C
6 August	21.3°C	23°C	18.8°C	23°C
7 August	21.4°C	22.6°C	18.9°C	22.6°C
8 August	21.8°C	22.4°C	18.8°C	22.4°C
9 August	21.8°C	22.7°C	19°C	22.7°C
10 August	22.1°C	22.4°C	19.3°C	23°C
11 August	22.1°C	21.9°C	19.2°C	23°C
12 August	22.6°C	21.5°C	19.1°C	23.1°C
13 August	22.4°C	21.4°C	18°C	22.8°C
14 August	22.3°C	21.5°C	17.4°C	22.8°C
15 August	22.4°C	21.7°C	16.8°C	22.8°C

Day	2025	2024	Min	Max
16 August	22.7°C	21.6°C	16.8°C	22.8°C
17 August	22.4°C	21.5°C	17.1°C	22.8°C
18 August	22.1°C	21.8°C	17.2°C	23.1°C
19 August	21.9°C	21.6°C	17.2°C	23.1°C
20 August	21.8°C	20.7°C	17.3°C	23.1°C
21 August	20.6°C	20.6°C	17.4°C	22.8°C
22 August	20.8°C	20.4°C	17.6°C	22.8°C
23 August	21.1°C	20.4°C	17.7°C	23.1°C
24 August	20.8°C	20.3°C	17.7°C	23.1°C
25 August	20.8°C	20.5°C	18.2°C	23.7°C
26 August	20.5°C	20.7°C	18.6°C	23.7°C
27 August	20.1°C	21.7°C	18.4°C	23.8°C
28 August	19.9°C	21.5°C	18.3°C	23.4°C
29 August	19.9°C	21.2°C	18.1°C	23.3°C
30 August	19.6°C	20.8°C	18.2°C	23°C
31 August	19.4°C	21.4°C	18.1°C	22.4°C

Average water temperature in Colpoy's Bay in August over a decade

2016	2017	2018	2019	2020
22.3°C	19.3°C	21.8°C	20.9°C	21.8°C

2021	2022	2023	2024	2025
21.2°C	21.1°C	20.3°C	21.7°C	21.3°C

Colpoy's Bay sea state in August

Chart comparing the height of waves in Colpoy's Bay in August 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.

Colpoy's Bay 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 August. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

	Avr	Min	Max
Balmy Beach	20.8°C	16.8°C	23.9°C
Lion's Head	20.4°C	16.3°C	23.6°C
Thornbury	21.3°C	17.2°C	24.1°C
Dyer's Bay	20.3°C	16.4°C	23.3°C
Port Elgin	20.9°C	17.2°C	24.4°C
Southampton	20.9°C	17.2°C	24.4°C
Collingwood	21.6°C	17.8°C	24.2°C
Wasaga Beach	21.6°C	17.8°C	24.3°C
Tiny Beach	21.6°C	17.7°C	24.2°C
Singing Sands	19.9°C	16°C	23°C

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Our report for Colpoy's Bay 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