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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 22 July 2026

Tonight and Thursday.

Wind northwest 10 knots veering to north 10 near midnight then becoming light late overnight. Wind light Thursday.

Waves

Issued 06:30 PM EDT 22 July 2026
Tonight and Thursday. Waves 0.5 metres or less subsiding to less than 0.5 early Thursday morning.

Extended Forecast

Issued 06:30 PM EDT 22 July 2026
Friday Wind light.
Saturday Wind light.
Sunday Wind light.

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Map of Great Lakes - Lake Huron marine weather areas Wiarton Airport Western Islands Cove Island Goderich Lake Simcoe Regional Airport Vineland Station Parry Sound Harbour Sarnia Chris Hadfield Airport Tobermory Muskoka Airport Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Lagoon City Southeast Shoal Burlington Lift Bridge Welland-Pelham Windsor Airport Port Colborne Erieau Peterborough Municipal Airport CFB Trenton Toronto City Centre Airport Point Petre Oshawa Executive Airport Hamilton Munro Int'l Airport Point Pelee Cobourg Port Colborne - 45142 North Channel - 45154 Ajax - 45159 Lake Nipissing - 45152 Sault Ste. Marie Airport Killarney Lake Simcoe - 45151 Greater Sudbury Airport South Lake Huron - 45149 Lake St Clair - 45147 North Bay Airport South Georgian Bay - 45143 Gore Bay-Manitoulin Airport Grimsby - 45139 Georgian Bay - 45137 Great Duck Island Collingwood Kingston Airport Grenadier Island Brockville Prince Edward Point - 45135 Port Stanley - 45132
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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 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 22 July 2026 Tonight and Thursday At 6:30 p.m. EDT tonight departing trough from 994 mb low located
on a line north-south over central Quebec.

At 6:30 p.m. EDT tonight ridge located on a line northwest-southeast
over Minnesota.
By 6:30 p.m. EDT Thursday ridge located on a line east-west over
southern Ontario.

By 6:30 p.m. EDT Thursday low 1003 mb located over northern
Saskatchewan.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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