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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 07 November 2025

Tonight and Saturday.

Wind west 10 knots veering to northwest 10 near midnight then to north 10 early Saturday morning. Wind becoming light near noon Saturday then becoming northeast 10 Saturday evening.

Waves

Issued 06:30 PM EST 07 November 2025
Tonight and Saturday. Waves 0.5 metres or less.

Extended Forecast

Issued 06:30 PM EST 07 November 2025
Sunday Wind light becoming northeast 15 knots in the morning.
Monday Wind north 20 knots.
Tuesday Wind west 15 knots backing to southwest 20.

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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
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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 7 November 2025 Tonight and Saturday At 6:30 p.m. EST tonight low 991 mb located northeast of Lake
Nipissing.
By 6:30 p.m. EST Saturday departing low 1002 mb located over the
Gulf of St. Lawrence.

At 6:30 p.m. EST tonight ridge located on a line north-south over
northern Saskatchewan.
By 6:30 p.m. EST Saturday ridge located on a line east-west over
Lake Nipigon.

Great Lakes - Lake Erie and Lake Ontario Area

Another Region

Marine Weather for Canada

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