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Cornwall to Montréal

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Issued 03:00 AM EST 20 January 2026

Forecasts have ended for the season.

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Map of Great Lakes - Lake Huron marine weather areas Cove Island Goderich Oshawa Executive Airport CFB Trenton Western Islands Wiarton Airport Point Petre Lake Simcoe Regional Airport Parry Sound Harbour Toronto City Centre Airport Muskoka Airport Lagoon City Brockville Hamilton Munro Int'l Airport Sarnia Chris Hadfield Airport Tobermory Cobourg Harrow AAFC Long Point Port Weller Burlington Lift Bridge St. Catharines / Niagara District Airport Southeast Shoal Point Pelee Vineland Station Welland-Pelham Erieau Windsor Airport Port Colborne Killarney South Georgian Bay - 45143 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Lake St Clair - 45147 South Lake Huron - 45149 Sault Ste. Marie Airport Lake Simcoe - 45151 Collingwood Greater Sudbury Airport North Bay Airport Kingston Airport Peterborough Municipal Airport Grenadier Island Port Colborne - 45142 Great Duck Island Ajax - 45159 Gore Bay-Manitoulin Airport North Channel - 45154 Lake Nipissing - 45152
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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 EST 20 January 2026 Today Tonight and Wednesday At 3:00 a.m. EST today low 1001 mb located near Sept-Îles.
By 3:00 p.m. EST Wednesday departing low 975 mb located over
Labrador Sea.

At 3:00 a.m. EST today ridge located on a line northeast-southwest
over western Quebec.
By 7:00 p.m. EST Wednesday ridge located on a line
northwest-southeast over the Gulf of St. Lawrence.

By 7:00 p.m. EST Wednesday building low 1007 mb located over
Lake Superior.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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