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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 11 April 2026

Tonight and Sunday.

Wind northwest 15 knots diminishing to light early this evening then becoming southeast 10 to 15 early Sunday afternoon.

Rain Sunday evening.

Low tonight minus 3. High Sunday plus 8.

Extended Forecast

Issued 06:00 PM EDT 11 April 2026
Monday Wind southeast 10 to 15 knots increasing to southwest 20 to 30 in the morning.
Tuesday Wind northeast 15 knots.
Wednesday Wind northeast 10 to 15 knots.

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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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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 11 April 2026 Tonight and Sunday At 3:00 p.m. EDT today low 1007 mb located over the Gulf of
St. Lawrence.
By 6:00 a.m. EDT Sunday departing low 1000 mb located over
Newfoundland.

At 3:00 p.m. EDT today high 1032 mb located from the Great Lakes
to Hudson Bay.
By 8:00 p.m. EDT Sunday high 1033 mb located from the East Coast
of the U.S. to Labrador.

At 8:00 p.m. EDT Sunday approaching low 992 mb located west of
Lake Superior.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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