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Southern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 19 January 2026

Today Tonight and Tuesday.

Gale warning in effect.

Wind southwest 25 knots increasing to northwest 35 this afternoon then diminishing to northwest 30 this evening. Wind diminishing to northwest 15 overnight then increasing to southwest 25 Tuesday morning.

Flurries. Visibility 1 mile or less in flurries.

Freezing spray warning in effect.

Risk of freezing spray this morning. Freezing spray beginning near noon and ending overnight. Risk of freezing spray late overnight and Tuesday morning. Freezing spray beginning near noon Tuesday.

Waves

Issued 03:00 AM EST 19 January 2026
Today Tonight and Tuesday. Over open water waves 1 to 1.5 metres building to 2 to 3 near noon then subsiding to 1 to 1.5 Tuesday morning. Waves building to 2 near noon Tuesday.

Extended Forecast

Issued 03:00 AM EST 19 January 2026
Wednesday Wind southwest 25 knots.
Thursday Wind west 25 knots.
Friday Wind west 20 knots.

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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 (In effect)

Gale warning in effect

Southern Georgian Bay

Issued 03:00 AM EST 19 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 19 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 19 January 2026 Today Tonight and Tuesday At 3:00 a.m. EST today dissipating ridge located on a line
northeast-southwest over southeastern Quebec.

At 3:00 a.m. EST today low 1002 mb located over eastern Lake
Superior.
By 3:00 a.m. EST Tuesday low 1002 mb located over eastern Quebec.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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