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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 10 September 2026

Today Tonight and Friday.

Wind west 10 knots becoming light this morning then becoming southeast 10 Friday afternoon.

Waves

Issued 03:00 AM EDT 10 September 2026
Today Tonight and Friday. Waves less than 0.5 metres.

Extended Forecast

Issued 03:00 AM EDT 10 September 2026
Saturday Wind light.
Sunday Wind light.
Monday Wind light becoming south 15 knots 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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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 3:00 AM EDT 10 September 2026 Today Tonight and Friday At 3:00 a.m. EDT today departing ridge located on a line
northeast-southwest over Nova Scotia.

At 3:00 a.m. EDT today low 981 mb located over eastern Hudson Bay.
By 3:00 a.m. EDT Friday low 984 mb located over northern Quebec.

At 3:00 a.m. EDT today ridge located on a line north-south over
the Ontario - Manitoba border.
By 3:00 a.m. EDT Friday ridge located on a line northeast-southwest
over northeastern Ontario.

By 3:00 a.m. EDT Friday low 991 mb located over northern Manitoba.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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