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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 16 December 2025

Tonight and Wednesday.

Wind southwest 20 knots increasing to southwest 25 this evening then diminishing to southwest 15 Wednesday morning. Wind diminishing to light Wednesday afternoon then becoming south 15 Wednesday evening.

Waves

Issued 06:30 PM EST 16 December 2025
Tonight and Wednesday. Mainly ice covered.

Extended Forecast

Issued 06:30 PM EST 16 December 2025
Thursday Wind south 15 knots increasing to south 20 in the morning.
Friday Wind west 30 knots diminishing to west 20.
Saturday Wind southwest 15 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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EST 16 December 2025 Tonight and Wednesday At 6:30 p.m. EST tonight departing ridge located on a line
northeast-southwest over the East Coast of the U.S.

At 6:30 p.m. EST tonight trough from low located on a line
northeast-southwest over Lake Nipigon.
By 6:30 p.m. EST Wednesday trough from low located on a line
northeast-southwest over the St. Lawrence River.

By 6:30 p.m. EST Wednesday ridge located on a line north-south
over Lake Huron.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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