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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 13 May 2026

Today Tonight and Thursday.

Wind light becoming southeast 15 knots this morning then diminishing to light near midnight. Wind becoming southeast 10 to 15 Thursday morning then backing to northeast 10 to 15 Thursday afternoon.

Rain beginning late this morning.

Extended Forecast

Issued 06:00 AM EDT 13 May 2026
Friday Wind northeast 15 knots diminishing to light in the afternoon.
Saturday Wind light increasing to southwest 15 to 25 knots.
Sunday Wind westerly 15 to 25 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 AM EDT 13 May 2026 Today Tonight and Thursday At 3:00 a.m. EDT today ridge located on a line north-south over
Saguenay River.
By 8:00 p.m. EDT tonight ridge located on a line northwest-southeast
over the Gulf of St. Lawrence.

At 3:00 a.m. EDT today low 1001 mb located over Lake Huron.
By 8:00 p.m. EDT Thursday low 1005 mb located near Cape Cod.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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