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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 31 October 2026

Today Tonight and Sunday.

Wind west 10 to 15 knots today tonight and Sunday.

Extended Forecast

Issued 06:00 AM EDT 31 October 2026
Monday Wind southwest 15 knots.
Tuesday Wind light.
Wednesday Wind southwest 15 knots.

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Map of Great Lakes - Lake Huron marine weather areas Sarnia Chris Hadfield Airport Peterborough Municipal Airport Toronto City Centre Airport Hamilton Munro Int'l Airport Goderich Southeast Shoal Western Islands St. Catharines / Niagara District Airport CFB Trenton Port Weller Wiarton Airport Lake Simcoe Regional Airport Vineland Station Tobermory Point Pelee Welland-Pelham Point Petre Cobourg Windsor Airport Harrow AAFC Erieau Long Point Port Colborne Oshawa Executive Airport Burlington Lift Bridge Greater Sudbury Airport Port Colborne - 45142 South Georgian Bay - 45143 Grimsby - 45139 Lake St Clair - 45147 South Lake Huron - 45149 Lake Simcoe - 45151 Lake Nipissing - 45152 North Channel - 45154 Ajax - 45159 Sault Ste. Marie Airport Killarney Georgian Bay - 45137 North Bay Airport Gore Bay-Manitoulin Airport Prince Edward Point - 45135 Brockville Grenadier Island Kingston Airport Port Stanley - 45132 Collingwood Lagoon City Muskoka Airport Parry Sound Harbour
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Ice Conditions

There is no ice forecast issued for this area.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 31 October 2026 Today Tonight and Sunday At 3:00 a.m. EDT today ridge located on a line northeast-southwest
over western Québec city.
By 7:00 p.m. EST Sunday ridge located on a line north-south over
southern Quebec.

At 3:00 a.m. EDT today trough located over Hudson Bay.
By 7:00 p.m. EST Sunday trough located over Labrador.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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