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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 10 April 2026

Tonight and Saturday.

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

Showers ending this evening. Visibility 1 mile or less in showers.

Extended Forecast

Issued 06:00 PM 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 Erie and Lake Ontario marine weather areas CFB Trenton Port Colborne - 45142 Hamilton Munro Int'l Airport Oshawa Executive Airport Port Stanley - 45132 Lake Nipissing - 45152 Point Petre Georgian Bay - 45137 Toronto City Centre Airport Lake Simcoe - 45151 South Georgian Bay - 45143 Prince Edward Point - 45135 Peterborough Municipal Airport South Lake Huron - 45149 Collingwood Lake St Clair - 45147 Grimsby - 45139 Goderich Lagoon City Kingston Airport Muskoka Airport Parry Sound Harbour Grenadier Island Lake Simcoe Regional Airport Wiarton Airport Brockville Western Islands Cove Island Great Duck Island North Channel - 45154 Sarnia Chris Hadfield Airport Gore Bay-Manitoulin Airport Tobermory Harrow AAFC Long Point North Bay Airport Port Weller St. Catharines / Niagara District Airport Greater Sudbury Airport Southeast Shoal Vineland Station Port Colborne Erieau Cobourg Sault Ste. Marie Airport Windsor Airport Welland-Pelham Killarney Ajax - 45159 Point Pelee Burlington Lift Bridge
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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 PM EDT 10 April 2026 Tonight and Saturday At 3:00 p.m. EDT today trough located from Labrador to Matane then
to New England.
By 8:00 p.m. EDT Saturday intensifying trough located on a line
north-south over the Gulf of St. Lawrence.

At 3:00 p.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 Erie and Lake Ontario Area

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Marine Weather for Canada

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