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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 05 May 2025

Today Tonight and Tuesday.

Strong wind warning in effect.

Wind northeast 20 knots diminishing to northeast 15 early this morning and to northeast 10 near noon. Wind veering to east 10 overnight then becoming light Tuesday afternoon. Wind becoming northwest 10 Tuesday evening.

Scattered showers and fog patches tonight and Tuesday.

Waves

Issued 03:00 AM EDT 05 May 2025
Today Tonight and Tuesday. Waves 1 metre subsiding to 0.5 or less this afternoon.

Extended Forecast

Issued 03:00 AM EDT 05 May 2025
Wednesday Wind light becoming north 15 knots in the morning.
Thursday Wind northeast 20 knots diminishing to light late in the day.
Friday Wind light becoming northwest 15 knots.

Ice Forecast*

Issued 12:00 PM EDT 4 May 2025 Today Tonight and Monday Open water.

*Ice Forecast and Warnings also apply to U.S. waters

 

[ Canadian Ice Service ]

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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 4 May 2025 Today Tonight and Monday

Ice Coverage

Open water.

Warnings

Warnings (In effect)

Strong wind warning in effect

Georgian Bay

Issued 03:00 AM EDT 05 May 2025

'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 or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 5 May 2025 Today Tonight and Tuesday At 3:00 a.m. EDT today ridge from 1028 mb high located on a line
east-west over eastern Lake Superior.
By 3:00 a.m. EDT Tuesday ridge from 1035 mb high located on a line
east-west over northeastern Ontario.

At 3:00 a.m. EDT today low 1010 mb located over southern Indiana.
By 3:00 a.m. EDT Tuesday low 1011 mb located over southern Lake
Huron.

At 3:00 a.m. EDT today trough located on a line northeast-southwest
over Manitoba.
By 3:00 a.m. EDT Tuesday trough located from North Dakota to
James Bay.

Great Lakes - Lake Huron Area

Another Region

Marine Weather for Canada

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