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Southern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 23 January 2026

Today Tonight and Saturday.

Gale warning in effect.

Wind northwest 25 knots increasing to northwest 35 this afternoon then diminishing to northwest 30 early this evening. Wind diminishing to north 20 late this evening and to north 15 near midnight. Wind diminishing to variable 10 Saturday morning then increasing to southeast 15 Saturday evening.

Scattered flurries. Visibility 1 mile or less in flurries.

Freezing spray warning in effect.

Freezing spray ending near midnight.

Waves

Issued 03:00 AM EST 23 January 2026
Today Tonight and Saturday. Over open water waves 2 metres building to 2 to 3 near noon then subsiding to 1.5 near midnight. Waves subsiding to 0.5 or less Saturday morning.

Extended Forecast

Issued 03:00 AM EST 23 January 2026
Sunday Wind southeast 15 knots backing to east 20 in the morning.
Monday Wind northwest 15 knots backing to west 20 late in the day.
Tuesday Wind southwest 20 knots veering to northwest 20.

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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
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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 (In effect)

Gale warning in effect

Southern Georgian Bay

Issued 03:00 AM EST 23 January 2026

'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.

Freezing spray warning in effect

Southern Georgian Bay

Issued 03:00 AM EST 23 January 2026

Moderate or severe freezing spray is 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 or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EST 23 January 2026 Today Tonight and Saturday At 3:00 a.m. EST today departing low 1004 mb located over northern
Quebec.

At 3:00 a.m. EST today high 1055 mb located over southwestern
Saskatchewan.
By 3:00 a.m. EST Saturday high 1047 mb located over southern
Minnesota.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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