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Cornwall to Montréal

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Marine Forecast

Issued 03:00 AM EST 08 December 2025

Today Tonight and Tuesday.

Wind westerly 15 knots diminishing to light near midnight then becoming southeast 10 to 15 Tuesday afternoon.

Snow Tuesday evening.

Temperatures near minus 12.

Extended Forecast

Issued 06:00 AM EST 08 December 2025
Wednesday Wind light becoming northeast 10 to 15 knots in the afternoon.
Thursday Wind northeast 15 knots increasing to northwest 15 to 25.
Friday Wind northwest 15 to 25 knots diminishing to light late in the day.

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Map of Great Lakes - Lake Huron marine weather areas Cove Island Goderich Oshawa Executive Airport CFB Trenton Western Islands Wiarton Airport Point Petre Lake Simcoe Regional Airport Parry Sound Harbour Toronto City Centre Airport Muskoka Airport Lagoon City Brockville Hamilton Munro Int'l Airport Sarnia Chris Hadfield Airport Tobermory Cobourg Harrow AAFC Long Point Port Weller Burlington Lift Bridge St. Catharines / Niagara District Airport Southeast Shoal Point Pelee Vineland Station Welland-Pelham Erieau Windsor Airport Port Colborne Killarney South Georgian Bay - 45143 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Lake St Clair - 45147 South Lake Huron - 45149 Sault Ste. Marie Airport Lake Simcoe - 45151 Collingwood Greater Sudbury Airport North Bay Airport Kingston Airport Peterborough Municipal Airport Grenadier Island Port Colborne - 45142 Great Duck Island Ajax - 45159 Gore Bay-Manitoulin Airport North Channel - 45154 Lake Nipissing - 45152
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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 EST 8 December 2025 Today Tonight and Tuesday At 3:00 a.m. EST today dissipating trough located on a line
north-south over the Quebec Lower North Shore.

At 3:00 a.m. EST today ridge located from Lake Huron to Lake
Saint-Jean.
By 7:00 p.m. EST Tuesday ridge located from the East Coast of the
U.S. to the Gulf of St. Lawrence.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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