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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 11 July 2026

Today Tonight and Sunday.

Wind light today tonight and Sunday.

Extended Forecast

Issued 06:00 PM EDT 10 July 2026
Sunday Wind light.
Monday Wind southwest 15 knots.
Tuesday Wind southwest 15 knots increasing to southwest 15 to 25.

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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 AM EDT 11 July 2026 Today Tonight and Sunday At 3:00 a.m. EDT today departing trough located on a line
northeast-southwest over Newfoundland.

At 3:00 a.m. EDT today ridge located on a line north-south over
James Bay.
By 8:00 p.m. EDT Sunday ridge located on a line northeast-southwest
over the Strait of Belle Isle.

At 2:00 a.m. EDT Sunday trough located on a line northeast-southwest
over Ontario.
By 8:00 p.m. EDT Sunday trough located on a line northeast-southwest
over Quebec.

Great Lakes - Lake Erie and Lake Ontario Area

Another Region

Marine Weather for Canada

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