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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EST 20 January 2026

Today Tonight and Wednesday.

Wind west 20 knots backing to southwest 25 near noon then diminishing to northwest 15 Wednesday evening.

Flurries changing to snow Wednesday morning. Visibility 1 mile or less in precipitation.

Freezing spray warning in effect.

Freezing spray beginning late this afternoon and ending near noon Wednesday. Risk of freezing spray Wednesday afternoon and evening.

Waves

Issued 10:30 AM EST 20 January 2026
Today Tonight and Wednesday. Over open water waves 0.5 to 1 metre building to 2 this afternoon then subsiding to 1 to 1.5 near noon Wednesday. Waves subsiding to 0.5 to 1 Wednesday evening.

Extended Forecast

Issued 03:00 AM EST 20 January 2026
Thursday Wind west 25 knots.
Friday Wind northwest 20 knots.
Saturday Wind northwest 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)

Freezing spray warning in effect

Northern Georgian Bay

Issued 10:30 AM EST 20 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 10:30 AM EST 20 January 2026 Today Tonight and Wednesday At 10:30 a.m. EST today ridge located from Kentucky to New York
State.
By 10:30 a.m. EST Wednesday ridge located on a line north-south
over central Quebec.

At 10:30 a.m. EST today trough located on a line north-south over
northern Ontario.
By 10:30 a.m. EST Wednesday trough located from James Bay to
Lake Michigan.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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