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Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 11 July 2026

Tonight and Sunday.

Wind northwest 10 knots becoming variable 10 near midnight then becoming southwest 10 Sunday afternoon.

Risk of thunderstorms Sunday evening.

Waves

Issued 06:30 PM EDT 11 July 2026
Tonight and Sunday. Waves 0.5 metres or less.

Extended Forecast

Issued 06:30 PM EDT 11 July 2026
Monday Wind light becoming southwest 15 knots in the morning.
Tuesday Wind southwest 15 knots increasing to southwest 20.
Wednesday Wind northwest 15 knots.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas CFB Trenton Port Colborne - 45142 Hamilton Munro Int'l Airport Oshawa Executive Airport Port Stanley - 45132 Lake Nipissing - 45152 Point Petre Georgian Bay - 45137 Toronto City Centre Airport Lake Simcoe - 45151 South Georgian Bay - 45143 Prince Edward Point - 45135 Peterborough Municipal Airport South Lake Huron - 45149 Collingwood Lake St Clair - 45147 Grimsby - 45139 Goderich Lagoon City Kingston Airport Muskoka Airport Parry Sound Harbour Grenadier Island Lake Simcoe Regional Airport Wiarton Airport Brockville Western Islands Cove Island Great Duck Island North Channel - 45154 Sarnia Chris Hadfield Airport Gore Bay-Manitoulin Airport Tobermory Harrow AAFC Long Point North Bay Airport Port Weller St. Catharines / Niagara District Airport Greater Sudbury Airport Southeast Shoal Vineland Station Port Colborne Erieau Cobourg Sault Ste. Marie Airport Windsor Airport Welland-Pelham Killarney Ajax - 45159 Point Pelee Burlington Lift Bridge
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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 11 July 2026 Tonight and Sunday At 6:30 p.m. EDT tonight ridge located on a line northeast-southwest
over Lake Huron.
By 6:30 p.m. EDT Sunday ridge located on a line east-west over
southern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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