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Southern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 03:39 PM EST 15 January 2026

Today Tonight and Friday.

Wind north 20 knots diminishing to north 15 early this evening and to northwest 10 late this evening. Wind becoming variable 10 late overnight then increasing to southeast 15 near noon Friday. Wind increasing to southeast 20 Friday evening.

Scattered flurries ending near midnight. Flurries Friday late in the day. Visibility 1 mile or less in flurries.

Risk of freezing spray late this afternoon.

Waves

Issued 03:38 PM EST 15 January 2026
Today Tonight and Friday. Waves 1 to 1.5 metres subsiding to 0.5 to 1 this evening and to 0.5 or less near midnight. Waves building to 0.5 to 1 Friday afternoon and to 1 to 1.5 Friday evening.

Extended Forecast

Issued 03:00 AM EST 15 January 2026
Saturday Wind southwest 15 knots increasing to southwest 20 in the morning.
Sunday Wind west 15 knots backing to southwest 20 late in the day.
Monday Wind southwest 25 knots veering to northwest 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

Warnings (Ended)

Freezing spray warning ended

Southern Georgian Bay

Issued 3:39 PM EST 15 January 2026
Synopsis

Technical Marine Synopsis

Issued 10:30 AM EST 15 January 2026 Today Tonight and Friday At 10:30 a.m. EST today low 995 mb located over southeastern Quebec.
By 10:30 a.m. EST Friday low 980 mb located over northern Nova
Scotia.

At 10:30 a.m. EST today ridge located over Lake Superior.
By 10:30 a.m. EST Friday ridge located on a line north-south over
northeastern Ontario.

At 10:30 a.m. EST today trough located on a line north-south over
northwestern Ontario.
By 10:30 a.m. EST Friday trough located on a line north-south over
northwestern Michigan.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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