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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 26 October 2026

Today Tonight and Tuesday.

Wind southwest 15 knots diminishing to west 10 this morning then increasing to north 15 early this evening. Wind veering to northeast 15 overnight then diminishing to east 10 near noon Tuesday.

Waves

Issued 03:00 AM EDT 26 October 2026
Today Tonight and Tuesday. Waves 0.5 to 1 metre subsiding to 0.5 or less near noon then building to 0.5 to 1 this evening. Waves subsiding to 0.5 or less Tuesday afternoon.

Extended Forecast

Issued 03:00 AM EDT 26 October 2026
Wednesday Wind light.
Thursday Wind south 15 knots veering to southwest 15 to 20.
Friday Wind west 15 knots diminishing to light late in the day.

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Map of Great Lakes - Lake Huron marine weather areas Erieau CFB Trenton Muskoka Airport Parry Sound Harbour Toronto City Centre Airport Lake Simcoe Regional Airport Wiarton Airport Point Petre Lagoon City Western Islands Cobourg Port Colborne Windsor Airport Point Pelee Welland-Pelham Vineland Station Burlington Lift Bridge Southeast Shoal St. Catharines / Niagara District Airport Goderich Port Weller Long Point Harrow AAFC Hamilton Munro Int'l Airport Tobermory Sarnia Chris Hadfield Airport Oshawa Executive Airport Collingwood Port Stanley - 45132 Prince Edward Point - 45135 Georgian Bay - 45137 Grimsby - 45139 Port Colborne - 45142 South Georgian Bay - 45143 Lake St Clair - 45147 South Lake Huron - 45149 Lake Simcoe - 45151 Lake Nipissing - 45152 North Channel - 45154 Ajax - 45159 Sault Ste. Marie Airport Killarney Greater Sudbury Airport North Bay Airport Gore Bay-Manitoulin Airport Peterborough Municipal Airport Brockville Grenadier Island Kingston Airport
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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 10:30 AM EDT 26 October 2026 Today Tonight and Tuesday At 10:30 a.m. EDT today departing cold front located on a line
east-west over eastern Ontario.

At 10:30 a.m. EDT today high 1040 mb located over southern Manitoba.
By 10:30 a.m. EDT Tuesday ridge located on a line
northwest-southeast over Lake Nipissing.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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