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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 13 July 2026

Today Tonight and Tuesday.

Wind light becoming south 10 knots early this evening then veering to southwest 10 near midnight. Wind increasing to southwest 15 Tuesday evening.

Waves

Issued 10:30 AM EDT 13 July 2026
Today Tonight and Tuesday. Waves 0.5 metres or less.

Extended Forecast

Issued 03:00 AM EDT 13 July 2026
Wednesday Wind light.
Thursday Wind light.
Friday Wind light.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas CFB Trenton Port Colborne - 45142 Hamilton Munro Int'l Airport Oshawa Executive Airport Port Stanley - 45132 Lake Nipissing - 45152 Point Petre Georgian Bay - 45137 Toronto City Centre Airport Lake Simcoe - 45151 South Georgian Bay - 45143 Prince Edward Point - 45135 Peterborough Municipal Airport South Lake Huron - 45149 Collingwood Lake St Clair - 45147 Grimsby - 45139 Goderich Lagoon City Kingston Airport Muskoka Airport Parry Sound Harbour Grenadier Island Lake Simcoe Regional Airport Wiarton Airport Brockville Western Islands Cove Island Great Duck Island North Channel - 45154 Sarnia Chris Hadfield Airport Gore Bay-Manitoulin Airport Tobermory Harrow AAFC Long Point North Bay Airport Port Weller St. Catharines / Niagara District Airport Greater Sudbury Airport Southeast Shoal Vineland Station Port Colborne Erieau Cobourg Sault Ste. Marie Airport Windsor Airport Welland-Pelham Killarney Ajax - 45159 Point Pelee Burlington Lift Bridge
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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 10:30 AM EDT 13 July 2026 Today Tonight and Tuesday At 10:30 a.m. EDT today ridge located on a line east-west over
southern Ontario.
By 10:30 a.m. EDT Tuesday ridge located on a line east-west
over Ohio.

At 10:30 a.m. EDT today low 999 mb located over western Hudson Bay.
By 10:30 a.m. EDT Tuesday low 984 mb located east of Hudson Bay.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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