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Marine Forecast

Issued 03:00 PM EST 09 December 2025

Tonight and Wednesday.

Wind light becoming southeast 10 to 15 knots early this evening then becoming light after midnight. Wind becoming northeast 15 Wednesday morning.

Snow tonight and Wednesday. Visibility 1 mile or less in snow.

Low tonight minus 8. High Wednesday minus 2.

Extended Forecast

Issued 06:00 PM EST 09 December 2025
Thursday Wind northeast 15 to 25 knots becoming westerly 15 to 25 in the morning.
Friday Wind westerly 15 to 25 knots diminishing to light late in the day.
Saturday 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 9 December 2025 Tonight and Wednesday At 3:00 p.m. EST today ridge located on a line north-south over
Saguenay River.
By 7:00 p.m. EST Wednesday ridge located on a line
northwest-southeast over Anticosti Island.

At 3:00 p.m. EST today low 999 mb located near Lake Superior.
By 7:00 p.m. EST Wednesday low 989 mb located over Lake Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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