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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:52 PM EST 13 December 2025

Tonight and Sunday.

Wind northwest 20 knots veering to north 15 near midnight then backing to northwest 15 near noon Sunday.

Scattered flurries. Visibility 1 mile or less in flurries.

Risk of freezing spray early this evening.

Waves

Issued 06:30 PM EST 13 December 2025
Tonight and Sunday. Waves 1.5 metres subsiding to 1 this evening.

Extended Forecast

Issued 06:30 PM EST 13 December 2025
Monday Wind light increasing to southwest 25 knots in the morning.
Tuesday Wind southwest 25 knots increasing to southwest 30 late in the day.
Wednesday Wind southwest 30 knots veering to northwest 25.

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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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Ice Conditions

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EST 13 December 2025 Tonight and Sunday At 6:30 p.m. EST tonight departing low 1008 mb located over
southern Quebec.

At 6:30 p.m. EST tonight ridge from 1040 mb high located on a line
north-south over North Dakota.
By 10:30 a.m. EST Sunday approaching ridge from 1045 mb high
located on a line north-south over Illinois.

By 6:30 p.m. EST Sunday approaching trough located on a line
northeast-southwest over northeastern Manitoba.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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