In August warmest sea in Canada is usually observed in the following locations: Niagara-on-the-Lake, Montreal, Windsor.
Table below shows the average sea water temperature for marine resorts of Canada in August for the last three years.
| Place name | August 2025 | August 2024 | August 2023 |
|---|---|---|---|
| Niagara-on-the-Lake | 74.7°F | 73.8°F | 71.5°F |
| Montreal | 74.7°F | 74.6°F | 72.1°F |
| Windsor | 74.3°F | 74.4°F | 72.6°F |
| Hamilton | 73.8°F | 72.3°F | 68.3°F |
| Mississauga | 73.4°F | 71.1°F | 66.9°F |
| Toronto | 73.2°F | 70.9°F | 66.5°F |
| Kingston | 73.2°F | 73.3°F | 72.1°F |
| Quebec | 73.1°F | 72.2°F | 70.6°F |
| Oshawa | 73.1°F | 70.4°F | 66.3°F |
| Niagara Falls | 72.9°F | 71.7°F | 70.2°F |
| Barrie | 72.6°F | 72.0°F | 70.4°F |
| Summerside | 70.2°F | 70.6°F | 67.8°F |
| Winnipeg | 69.0°F | 72.0°F | 70.0°F |
| Charlottetown | 68.9°F | 70.3°F | 66.2°F |
| Gimli | 68.6°F | 71.6°F | 69.6°F |
| Prince Edward Island | 67.9°F | 70.8°F | 66.1°F |
| Sydney | 67.5°F | 70.0°F | 66.0°F |
| Les Iles-de-la-Madeleine | 65.4°F | 68.3°F | 64.8°F |
| Surrey | 65.2°F | 64.2°F | 65.0°F |
| North Vancouver | 65.0°F | 64.2°F | 63.6°F |
| Vancouver | 64.9°F | 64.1°F | 63.4°F |
| Nanaimo | 64.7°F | 63.8°F | 64.8°F |
| Corner Brook | 64.6°F | 67.0°F | 64.1°F |
| Moncton | 64.0°F | 65.2°F | 63.2°F |
| Lunenburg | 64.0°F | 62.3°F | 63.7°F |
| Halifax | 63.9°F | 61.6°F | 63.5°F |
| Thunder Bay | 63.2°F | 66.4°F | 62.1°F |
| Rocky Harbour | 63.1°F | 65.4°F | 63.7°F |
| Twillingate Island | 60.1°F | 64.1°F | 60.9°F |
| Yellowknife | 59.6°F | 59.2°F | 62.3°F |
| Saint John | 59.5°F | 59.3°F | 59.4°F |
| Saint Andrews | 59.1°F | 59.3°F | 59.5°F |
| Bonavista | 58.6°F | 63.5°F | 57.8°F |
| St. John's | 57.9°F | 60.9°F | 57.2°F |
| Tofino | 56.9°F | 58.3°F | 58.0°F |
| Trinity | 56.5°F | 61.2°F | 55.4°F |
| Victoria | 53.1°F | 52.2°F | 53.7°F |
Charts below show average sea water temperature for Canada resorts with the warmest sea in August.
You can also check other months of the year to see sea temperature of Canada resorts at that time.
Places in Canada:
Name
°F
