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Southern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EST 14 November 2025

Today Tonight and Saturday.

Gale warning in effect.

Wind north 10 knots veering to northeast 10 this afternoon then increasing to southeast 15 this evening. Wind increasing to southeast 20 late overnight then veering to southwest 20 Saturday afternoon. Wind increasing to northwest 35 Saturday evening.

Scattered showers Saturday.

Waves

Issued 10:30 AM EST 14 November 2025
Today Tonight and Saturday. Waves 0.5 to 1 metre subsiding to 0.5 or less this afternoon then building to 0.5 to 1 near midnight. Waves building to 1 to 1.5 early Saturday morning and to 2 to 3 Saturday evening.

Extended Forecast

Issued 03:00 AM EST 14 November 2025
Sunday Wind northwest 35 knots diminishing to northwest 25 in the afternoon.
Monday Wind northwest 25 knots.
Tuesday Wind northwest 15 knots diminishing to light.

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

Gale warning in effect

Southern Georgian Bay

Issued 10:30 AM EST 14 November 2025

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EST 14 November 2025 Today Tonight and Saturday At 10:30 a.m. EST today ridge located on a line north-south over
Lake Ontario.
By 10:30 a.m. EST Saturday ridge located on a line north-south
over the Eastern Seaboard.

At 10:30 a.m. EST today trough located on a line north-south over
western Manitoba.
By 10:30 a.m. EST Saturday trough located on a line north-south
over Lake Superior.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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