Les Iles-de-la-Madeleine Sea Temperature in September

Average sea water temperature in September:

+61.4°F


Minimum sea water temperature in September:	68.2°F
Maximum sea water temperature in September:	55.6°F

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2026

2025

2024

The average sea water temperature in September of 2026 was 59.6°F. The highest and lowest sea temperatures during the month were 66.0°F and 55.6°F.

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Les Iles-de-la-Madeleine

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Les Iles-de-la-Madeleine

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Les Iles-de-la-Madeleine

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Les Iles-de-la-Madeleine

Which Canada resorts have warmest sea in September?

Place name	September 2026	September 2025
Niagara-on-the-Lake	69.9°F	67.8°F
Windsor	69.8°F	68.5°F
Kingston	69.2°F	67.2°F
Niagara Falls	68.7°F	66.4°F
Barrie	67.9°F	66.4°F
Quebec	67.2°F	65.9°F
Hamilton	67.2°F	66.3°F
Montreal	66.9°F	66.7°F
Toronto	66.5°F	65.1°F
Oshawa	66.5°F	65.2°F
Mississauga	66.4°F	65.6°F
Gimli	64.6°F	63.6°F
Winnipeg	64.1°F	64.2°F
Summerside	63.1°F	66.2°F
Charlottetown	62.2°F	65.8°F
Halifax	61.7°F	65.2°F
Sydney	61.7°F	64.8°F
Lunenburg	61.6°F	65.4°F
Prince Edward Island	61.2°F	65.0°F
Surrey	60.6°F	62.4°F