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Marine Forecast

Issued 03:00 AM EST 15 December 2025

Today Tonight and Tuesday.

Wind west 10 knots backing to southwest 10 this morning then increasing to southwest 15 early this evening. Wind diminishing to southwest 10 near midnight then increasing to southwest 15 Tuesday afternoon.

Periods of snow this afternoon and this evening.

Extended Forecast

Issued 03:00 AM EST 15 December 2025
Wednesday Wind southwest 15 knots diminishing to light in the afternoon.
Thursday Wind light becoming south 15 knots.
Friday Wind south 15 knots diminishing to light late in the day.

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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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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 15 December 2025 Today Tonight and Tuesday At 3:00 a.m. EST today high 1037 mb located over southern Illinois.
By 3:00 a.m. EST Tuesday high 1030 mb located over North Carolina.

At 3:00 a.m. EST today trough located on a line northeast-southwest
over the Ontario - Manitoba border.
By 3:00 a.m. EST Tuesday trough located on a line
northeast-southwest over Georgian Bay.

By 3:00 a.m. EST Tuesday approaching low 988 mb located over
southern Saskatchewan.

Great Lakes - Lake Erie and Lake Ontario Area

Another Region

Marine Weather for Canada

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