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Lake St. Clair

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Marine Forecast

Issued 06:52 PM EST 13 December 2025

Tonight and Sunday.

Wind west 15 knots veering to northwest 20 this evening then increasing to northwest 25 Sunday morning. Wind diminishing to west 15 Sunday evening.

Scattered flurries Sunday afternoon.

Waves

Issued 06:30 PM EST 13 December 2025
Tonight and Sunday. Over open water waves 0.5 to 1 metre subsiding to 0.5 or less Sunday evening.

Extended Forecast

Issued 06:30 PM EST 13 December 2025
Monday Wind southwest 15 knots increasing to southwest 25 in the morning then diminishing to southwest 15 late in the day.
Tuesday Wind southwest 15 knots increasing to southwest 20 late in the day.
Wednesday Wind southwest 20 knots diminishing to light.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Harrow AAFC Burlington Lift Bridge Oshawa Executive Airport Point Pelee Peterborough Municipal Airport Point Petre Hamilton Munro Int'l Airport Erieau Cobourg Toronto City Centre Airport Port Colborne CFB Trenton South Lake Huron - 45149 Windsor Airport Great Duck Island Gore Bay-Manitoulin Airport North Bay Airport Greater Sudbury Airport Killarney Sault Ste. Marie Airport Ajax - 45159 North Channel - 45154 Lake Nipissing - 45152 Lake Simcoe - 45151 Welland-Pelham Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Vineland Station Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Cove Island Goderich Sarnia Chris Hadfield Airport Western Islands Tobermory Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal
Legend:
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land station Land Station
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 13 December 2025 Tonight and Sunday At 6:30 p.m. EST tonight departing low 1008 mb located over
southern Quebec.

At 6:30 p.m. EST tonight ridge from 1040 mb high located on a line
north-south over North Dakota.
By 10:30 a.m. EST Sunday approaching ridge from 1045 mb high
located on a line north-south over Illinois.

By 6:30 p.m. EST Sunday approaching trough located on a line
northeast-southwest over northeastern Manitoba.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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