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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 06 December 2025

Tonight and Sunday.

Wind west 10 knots becoming light this evening then becoming west 10 early Sunday morning. Wind increasing to northwest 15 Sunday afternoon then veering to north 15 Sunday evening.

Snow Sunday. Visibility 1 mile or less in snow.

Waves

Issued 06:30 PM EST 06 December 2025
Tonight and Sunday. Waves 0.5 metres or less.

Extended Forecast

Issued 06:30 PM EST 06 December 2025
Monday Wind north 15 knots diminishing to light in the morning.
Tuesday Wind south 15 knots veering to southwest 20.
Wednesday Wind southwest 20 knots veering to northwest 20 late in the day.

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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 6 December 2025 Tonight and Sunday At 6:30 p.m. EST tonight departing cold front located on a line
north-south over Ottawa.

At 6:30 p.m. EST tonight disturbance located over Iowa.
By 6:30 p.m. EST Sunday low 1015 mb located east of Lake Ontario.

At 6:30 p.m. EST tonight ridge located on a line northwest-southeast
over Saskatchewan.
By 6:30 p.m. EST Sunday ridge located on a line north-south over
Lake of the Woods.

Great Lakes - Lake Huron Area

Another Region

Marine Weather for Canada

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