In September warmest sea in Canada is usually observed in the following locations: Windsor, Niagara-on-the-Lake, Kingston.
Table below shows the average sea water temperature for marine resorts of Canada in September for the last three years.
| Place name | September 2026 | September 2025 | September 2024 |
|---|---|---|---|
| Windsor | 73.3°F | 68.5°F | 70.8°F |
| Niagara-on-the-Lake | 72.2°F | 67.8°F | 70.0°F |
| Kingston | 71.2°F | 67.2°F | 69.2°F |
| Niagara Falls | 70.7°F | 66.4°F | 68.2°F |
| Montreal | 70.0°F | 66.7°F | 68.5°F |
| Barrie | 69.7°F | 66.4°F | 68.2°F |
| Quebec | 69.2°F | 65.9°F | 66.6°F |
| Gimli | 69.0°F | 63.6°F | 66.1°F |
| Winnipeg | 68.6°F | 64.2°F | 66.0°F |
| Hamilton | 68.1°F | 66.3°F | 68.8°F |
| Toronto | 67.4°F | 65.1°F | 67.7°F |
| Mississauga | 67.2°F | 65.6°F | 68.1°F |
| Oshawa | 67.2°F | 65.2°F | 68.3°F |
| Summerside | 65.5°F | 66.2°F | 65.5°F |
| Sydney | 64.6°F | 64.8°F | 64.8°F |
| Charlottetown | 64.4°F | 65.8°F | 64.5°F |
| Thunder Bay | 63.5°F | 59.9°F | 63.7°F |
| Halifax | 63.4°F | 65.2°F | 60.8°F |
| Prince Edward Island | 63.2°F | 65.0°F | 64.7°F |
| Lunenburg | 62.8°F | 65.4°F | 60.5°F |
| Les Iles-de-la-Madeleine | 62.5°F | 63.3°F | 62.0°F |
| Moncton | 61.9°F | 62.1°F | 60.5°F |
| Surrey | 61.7°F | 62.4°F | 60.6°F |
| Nanaimo | 61.5°F | 61.8°F | 61.2°F |
| North Vancouver | 60.4°F | 61.9°F | 59.7°F |
| Vancouver | 60.4°F | 61.7°F | 59.5°F |
| Corner Brook | 59.9°F | 61.5°F | 61.9°F |
| Rocky Harbour | 59.7°F | 60.8°F | 61.3°F |
| Bonavista | 58.9°F | 55.7°F | 59.6°F |
| St. John's | 58.9°F | 56.1°F | 59.6°F |
| Trinity | 58.7°F | 55.5°F | 59.4°F |
| Twillingate Island | 58.5°F | 56.9°F | 59.2°F |
| Saint Andrews | 57.7°F | 58.2°F | 57.9°F |
| Saint John | 57.6°F | 58.5°F | 58.6°F |
| Tofino | 57.6°F | 58.3°F | 56.9°F |
| Yellowknife | 54.8°F | 57.4°F | 54.8°F |
| Victoria | 52.5°F | 53.0°F | 52.6°F |
Charts below show average sea water temperature for Canada resorts with the warmest sea in September.
You can also check other months of the year to see sea temperature of Canada resorts at that time.
Places in Canada:
Name
°F
