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Marine Forecast

Issued 08:26 PM EST 06 December 2025

Tonight and Sunday.

Wind southwest 15 to 20 knots veering to northwest 15 near midnight then diminishing to light early Sunday morning. Wind becoming northeast 10 to 15 Sunday afternoon then backing to northwest 15 Sunday evening.

Flurries this evening. Snow Sunday late in the day. Visibility 1 mile or less in precipitation.

Temperatures minus 1 falling to minus 12 Sunday morning.

Extended Forecast

Issued 06:00 PM EST 06 December 2025
Monday Wind northwest 10 to 15 knots backing to southwest 10 to 15 in the morning.
Tuesday Wind light.
Wednesday Wind 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
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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 PM EST 6 December 2025 Tonight and Sunday At 3:00 p.m. EST today trough located on a line northeast-southwest
over southwestern Quebec.
By 7:00 p.m. EST Sunday trough located on a line northeast-southwest
over the Gulf of St. Lawrence.

At 3:00 p.m. EST today ridge located on a line east-west over
Lake Superior.
By 7:00 p.m. EST Sunday ridge located from Lake Superior to Lake
Saint-Jean.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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