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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 21 May 2026

Today Tonight and Friday.

Strong wind warning in effect.

Wind northeast 15 knots veering to east 15 near midnight then increasing to east 20 Friday morning.

Waves

Issued 03:00 AM EDT 21 May 2026
Today Tonight and Friday. Waves 0.5 metres building to 1 Friday morning.

Extended Forecast

Issued 03:00 AM EDT 21 May 2026
Saturday Wind east 20 knots increasing to east 25 in the morning then diminishing to southwest 15 late in the day.
Sunday Wind southwest 15 knots diminishing to light.
Monday 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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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

Warnings (In effect)

Strong wind warning in effect

Lake St. Clair

Issued 03:00 AM EDT 21 May 2026

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 21 May 2026 Today Tonight and Friday At 3:00 a.m. EDT today high 1031 mb located over northeastern
Lake Superior.
By 3:00 a.m. EDT Friday high 1030 mb located over northeastern
Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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