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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 16 April 2026

Tonight and Friday.

Wind light becoming northeast 10 to 15 knots late overnight then becoming light near noon Friday.

Showers ending near midnight. Fog banks forming near midnight and dissipating Friday morning.

Extended Forecast

Issued 06:00 PM EDT 16 April 2026
Saturday Wind northeast 10 to 15 knots veering to southeast 10 to 20 in the morning then increasing to southeast 20 to 30 in the afternoon.
Sunday Wind south 15 to 25 knots becoming west 15.
Monday Wind west 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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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 16 April 2026 Tonight and Friday At 3:00 p.m. EDT today departing ridge located on a line east-west
over Newfoundland.

At 3:00 p.m. EDT today low 1004 mb located over eastern Ontario.
By 8:00 a.m. EDT Friday low 1006 mb located over the Gulf of
St. Lawrence.

At 8:00 p.m. EDT tonight ridge located on a line northeast-southwest
over Manitoba.
By 8:00 p.m. EDT Friday ridge located from Hudson Bay to Lake
Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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