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Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:03 AM EDT 16 May 2025

Today Tonight and Saturday.

Wind southwest 15 knots diminishing to light this afternoon then becoming southeast 15 near midnight. Wind veering to southwest 15 near noon Saturday then to west 15 Saturday evening.

Scattered showers this morning. Showers and fog patches overnight and Saturday with a risk of thunderstorms. Fog patches dissipating near noon.

Waves

Issued 03:00 AM EDT 16 May 2025
Today Tonight and Saturday. Waves 0.5 to 1 metre subsiding to 0.5 or less early this evening then building to 0.5 to 1 overnight.

Extended Forecast

Issued 03:00 AM EDT 16 May 2025
Sunday Wind west 15 knots veering to north 20 in the morning.
Monday Wind north 15 knots.
Tuesday Wind northeast 15 knots diminishing to light.

Ice Forecast*

Issued 12:00 PM EDT 15 May 2025 Today Tonight and Friday Ice free.These are the last forecasts for the season.

*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 15 May 2025 Today Tonight and Friday

Ice Coverage

Ice free.

These are the last forecasts for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 16 May 2025 Today Tonight and Saturday At 3:00 a.m. EDT today departing ridge located on a line
northeast-southwest over the Maritimes.

At 3:00 a.m. EDT today low 984 mb located over eastern North Dakota.
By 3:00 a.m. EDT Saturday low 991 mb located over northern
Wisconsin.

By 3:00 a.m. EDT Saturday approaching ridge located on a line
north-south over Saskatchewan.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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