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Southern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 06 November 2026

Today Tonight and Saturday.

Strong wind warning in effect.

Wind west 10 knots becoming variable 10 this morning then increasing to northeast 20 this afternoon. Wind diminishing to north 15 Saturday morning then backing to northwest 15 near noon Saturday.

Periods of rain ending near noon Saturday.

Waves

Issued 03:00 AM EST 06 November 2026
Today Tonight and Saturday. Waves 0.5 metres or less building to 1 early this evening.

Extended Forecast

Issued 03:00 AM EST 06 November 2026
Sunday Wind southwest 15 knots increasing to southwest 25 in the morning and to northwest 35 in the afternoon.
Monday Wind northwest 25 knots diminishing to west 15.
Tuesday Wind southwest 20 knots veering to northwest 25 late in the day.

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

Warnings (In effect)

Strong wind warning in effect

Southern Georgian Bay

Issued 04:10 AM EST 06 November 2026

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EST 6 November 2026 Today Tonight and Saturday At 3:00 a.m. EST today low 1007 mb located over Lake Huron.
By 3:00 a.m. EST Saturday low 1006 mb located over New England.

At 3:00 a.m. EST today ridge located on a line northeast-southwest
over northwestern Ontario.
By 3:00 a.m. EST Saturday ridge located on a line
northeast-southwest over Lake Superior.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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