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Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 12 June 2025

Tonight and Friday.

Wind west 10 knots increasing to northeast 15 near midnight then diminishing to light near noon Friday.

Scattered showers Friday late in the day.

Waves

Issued 06:30 PM EDT 12 June 2025
Tonight and Friday. Waves 0.5 metres subsiding to less than 0.5 this evening then building to 0.5 to 1 late overnight. Waves subsiding to less than 0.5 Friday afternoon.

Extended Forecast

Issued 06:30 PM EDT 12 June 2025
Saturday Wind light.
Sunday Wind light.
Monday Wind light.

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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 EDT 12 June 2025 Tonight and Friday At 6:30 p.m. EDT tonight high 1027 mb located over northwestern
Ontario.
By 6:30 p.m. EDT Friday high 1025 mb located near James Bay.

At 6:30 p.m. EDT tonight quasi-stationary cold front located on
a line east-west over Ohio.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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