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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 14 December 2025

Today Tonight and Monday.

Wind north 15 knots backing to northwest 15 this afternoon then increasing to southwest 25 Monday morning. Wind veering to northwest 20 Monday evening.

Scattered flurries changing to snow Monday morning then to scattered flurries Monday evening. Visibility 1 mile or less in snow.

Waves

Issued 03:00 AM EST 14 December 2025
Today Tonight and Monday. Waves 0.5 to 1 metre building to 2 Monday morning then subsiding to 1.5 Monday evening.

Extended Forecast

Issued 03:00 AM EST 14 December 2025
Tuesday Wind southwest 15 knots increasing to southwest 30 in the afternoon.
Wednesday Wind southwest 30 knots diminishing to west 15 late in the day.
Thursday Wind south 20 knots increasing to southwest 30 late in the day.

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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 3:00 AM EST 14 December 2025 Today Tonight and Monday At 3:00 a.m. EST today high 1044 mb located over southeastern
South Dakota.
By 3:00 a.m. EST Monday high 1039 mb located over Kentucky.

By 3:00 a.m. EST Monday approaching trough located on a line
north-south over Lake Superior.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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