Ontario water temperature in August

Can you swim in Ontario in summer? In August water temperature in some cities of Ontario is above 20°C and it is enough for comfortable bathing. Based on average water temperature observations over the past ten years, the warmest water temperature in Ontario in August was 24.4°C (in Colchester), and the coldest 12.8°C (in Kashechewan). To find out the sea temperature today and in the coming days, go to Current sea temperature in Ontario

Ontario surface temperature in August

Ontario cities and resorts with the values of the average water temperature in August in recent years.
For more detailed information about water temperature, surf forecast, weather and time of sunrise and sunset in any specific area of your interest, just click on a city name. For ease of search, all places are also grouped by the first letter of the name.

Ontario list of regions

To find out what the water temperature was in Ontario any day over a period of the last ten years, select the month

Places with the warmest average water temperature in Ontario in August. Also indicated are the maximum and minimum temperatures in August for these locations based on observations over the past 10 years

If you have interesting photos of this place, you can upload them here. Photos will be available to all users after verification by the moderator.

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Our report for Canada 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.