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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 13 October 2026

Today Tonight and Wednesday.

Wind southwest 15 knots diminishing to west 10 early this evening then becoming light overnight. Wind becoming north 10 Wednesday morning then veering to northeast 10 Wednesday evening.

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

Waves

Issued 03:00 AM EDT 13 October 2026
Today Tonight and Wednesday. Waves 0.5 metres.

Extended Forecast

Issued 03:00 AM EDT 13 October 2026
Thursday Wind northeast 15 knots.
Friday Wind light increasing to northwest 30 knots late in the day.
Saturday Wind northwest 20 knots backing to southwest 15 late in the day.

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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 3:00 AM EDT 13 October 2026 Today Tonight and Wednesday At 3:00 a.m. EDT today ridge located on a line east-west over
James Bay.
By 3:00 a.m. EDT Wednesday ridge located on a line
northwest-southeast over eastern Quebec.

At 3:00 a.m. EDT today low 1002 mb located over Wisconsin.
By 3:00 a.m. EDT Wednesday low 1006 mb located over the St. Lawrence
River.

By 3:00 a.m. EDT Wednesday low 990 mb located over Hudson Bay.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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