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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 16 September 2026

Today Tonight and Thursday.

Wind north 10 knots veering to northeast 10 this evening then backing to north 10 late overnight. Wind becoming light near noon Thursday.

Scattered showers ending this afternoon. Scattered showers tonight and Thursday morning with a risk of thunderstorms.

Waves

Issued 10:30 AM EDT 16 September 2026
Today Tonight and Thursday. Waves 0.5 metres or less.

Extended Forecast

Issued 03:00 AM EDT 16 September 2026
Friday Wind light becoming northeast 15 knots in the morning.
Saturday Wind east 15 knots.
Sunday Wind northeast 15 knots.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Harrow AAFC Hamilton Munro Int'l Airport CFB Trenton Erieau Toronto City Centre Airport Point Pelee Peterborough Municipal Airport Burlington Lift Bridge Point Petre Cobourg Oshawa Executive Airport South Lake Huron - 45149 Port Colborne Brockville 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 Windsor Airport Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Welland-Pelham Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Western Islands Sarnia Chris Hadfield Airport Vineland Station Southeast Shoal St. Catharines / Niagara District Airport Goderich Port Weller Long Point Tobermory
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Ice Conditions

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 16 September 2026 Today Tonight and Thursday At 10:30 a.m. EDT today departing low 995 mb located east of
Hudson Bay.

At 10:30 a.m. EDT today high 1029 mb located over Thunder Bay.
By 10:30 a.m. EDT Thursday high 1025 mb located over eastern Quebec.

By 10:30 a.m. EDT Thursday high 1030 mb located over southern
Manitoba.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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