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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 12 May 2025

Today Tonight and Tuesday.

Wind light becoming southwest 10 to 15 knots this morning then diminishing to light early this evening. Wind becoming northeast 10 to 15 overnight. Wind easterly 10 to 15 Tuesday.

Extended Forecast

Issued 06:00 AM EDT 12 May 2025
Wednesday Wind southerly 10 to 15 knots.
Thursday Wind light.
Friday Wind northeast 10 to 15 knots becoming light.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Harrow AAFC Burlington Lift Bridge Oshawa Executive Airport Point Pelee Peterborough Municipal Airport Point Petre Hamilton Munro Int'l Airport Erieau Cobourg Toronto City Centre Airport Port Colborne CFB Trenton South Lake Huron - 45149 Windsor Airport Great Duck Island Gore Bay-Manitoulin Airport North Bay Airport Greater Sudbury Airport Killarney Sault Ste. Marie Airport Ajax - 45159 North Channel - 45154 Lake Nipissing - 45152 Lake Simcoe - 45151 Welland-Pelham Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Vineland Station Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Cove Island Goderich Sarnia Chris Hadfield Airport Western Islands Tobermory Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal
Legend:
buoy Buoy
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 12 May 2025 Today Tonight and Tuesday At 3:00 a.m. EDT today low 984 mb located northeast of the Strait
of Belle Isle.
By 8:00 p.m. EDT tonight departing low 986 mb located over
Labrador Sea.

At 3:00 a.m. EDT today ridge located on a line northeast-southwest
over Lake Saint-Jean.
By 8:00 p.m. EDT Tuesday ridge located on a line north-south
over Gaspé.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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