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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 13 October 2026

Tonight and Wednesday.

Wind west 10 knots becoming light late overnight then becoming north 10 Wednesday morning. Wind increasing to northeast 15 Wednesday afternoon.

Scattered showers overnight and Wednesday morning with a risk of thunderstorms.

Waves

Issued 06:30 PM EDT 13 October 2026
Tonight and Wednesday. Waves less than 0.5 metres building to 0.5 Wednesday evening.

Extended Forecast

Issued 06:30 PM EDT 13 October 2026
Thursday Wind northeast 15 knots diminishing to light in the morning.
Friday Wind light increasing to north 30 knots late in the day.
Saturday Wind north 30 knots diminishing to light.

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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 6:30 PM EDT 13 October 2026 Tonight and Wednesday At 6:30 p.m. EDT tonight departing ridge located on a line
northwest-southeast over Nova Scotia.

At 6:30 p.m. EDT tonight low 1004 mb located east of Toronto.
By 6:30 p.m. EDT Wednesday low 1001 mb located near Prince Edward
Island.

By 6:30 p.m. EDT Wednesday high 1024 mb located near Lake Nipigon.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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