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Lake St. Clair

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Forecast

Marine Forecast

Issued 06:30 PM EST 05 December 2025

Tonight and Saturday.

Wind southwest 15 knots veering to west 15 Saturday morning then diminishing to west 10 Saturday afternoon. Wind becoming light Saturday evening.

Scattered flurries overnight and Saturday morning.

Waves

Issued 06:30 PM EST 05 December 2025
Tonight and Saturday. Waves 0.5 to 1 metre subsiding to 0.5 or less Saturday evening.

Extended Forecast

Issued 06:30 PM EST 05 December 2025
Sunday Wind light becoming northwest 15 knots late in the day.
Monday Wind northwest 15 knots diminishing to light.
Tuesday Wind southwest 15 knots increasing to southwest 20.

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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 5 December 2025 Tonight and Saturday At 6:30 p.m. EST tonight ridge located on a line north-south over
eastern Quebec.
By 6:30 p.m. EST Saturday departing ridge located on a line
north-south over Labrador.

At 6:30 p.m. EST tonight cold front located on a line
northeast-southwest over northern Ontario.
By 6:30 p.m. EST Saturday cold front located on a line
northeast-southwest over Lake Huron.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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