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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 11 May 2025

Today Tonight and Monday.

Wind northwest 10 to 15 knots becoming light this morning then becoming southwest 10 to 15 Monday morning. Wind diminishing to light Monday afternoon then becoming northeast 10 to 15 Monday evening.

Extended Forecast

Issued 06:00 AM EDT 11 May 2025
Tuesday Wind light.
Wednesday Wind southerly 10 to 15 knots.
Thursday Wind light.

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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 EDT 11 May 2025 Today Tonight and Monday At 3:00 a.m. EDT today low 996 mb located north of
Îles-de-la-Madeleine.
By 8:00 p.m. EDT Monday low 990 mb located over Labrador Sea.

At 3:00 a.m. EDT today ridge located on a line northeast-southwest
over the Great Lakes.
By 8:00 p.m. EDT Monday ridge located on a line north-south over
Trois-Rivières.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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