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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 10 April 2026

Today Tonight and Saturday.

Wind southwest 10 to 15 knots diminishing to light early this morning then becoming west 10 to 15 early this afternoon. Wind becoming light near midnight then becoming northwest 10 to 15 Saturday morning. Wind becoming light Saturday evening.

Showers today and this evening. Visibility 1 mile or less in showers.

Extended Forecast

Issued 06:00 AM EDT 10 April 2026
Sunday Wind light.
Monday Wind southerly 25 to 35 knots.
Tuesday Wind southwest 15 to 25 knots becoming northeast 15.

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Map of Great Lakes - Lake Huron marine weather areas Wiarton Airport Western Islands Cove Island Goderich Lake Simcoe Regional Airport Vineland Station Parry Sound Harbour Sarnia Chris Hadfield Airport Tobermory Muskoka Airport Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Lagoon City Southeast Shoal Burlington Lift Bridge Welland-Pelham Windsor Airport Port Colborne Erieau Peterborough Municipal Airport CFB Trenton Toronto City Centre Airport Point Petre Oshawa Executive Airport Hamilton Munro Int'l Airport Point Pelee Cobourg Port Colborne - 45142 North Channel - 45154 Ajax - 45159 Lake Nipissing - 45152 Sault Ste. Marie Airport Killarney Lake Simcoe - 45151 Greater Sudbury Airport South Lake Huron - 45149 Lake St Clair - 45147 North Bay Airport South Georgian Bay - 45143 Gore Bay-Manitoulin Airport Grimsby - 45139 Georgian Bay - 45137 Great Duck Island Collingwood Kingston Airport Grenadier Island Brockville Prince Edward Point - 45135 Port Stanley - 45132
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land station Land Station
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 10 April 2026 Today Tonight and Saturday At 3:00 a.m. EDT today trough located on a line northeast-southwest
over Lake Saint-Jean.
By 8:00 p.m. EDT Saturday intensifying trough located on a line
north-south over the Gulf of St. Lawrence.

At 3:00 a.m. EDT today ridge located on a line northeast-southwest
over Lake Superior.
By 8:00 p.m. EDT Saturday ridge located on a line north-south over
Lake Erie.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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