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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 10 March 2026

Today Tonight and Wednesday.

Wind southwest 10 knots becoming northeast 10 this afternoon then increasing to northeast 15 this evening. Wind veering to east 20 late overnight then backing to northeast 15 near noon Wednesday. Wind increasing to southwest 25 Wednesday evening.

Showers this afternoon tonight and Wednesday with a risk of thunderstorms.

Waves

Issued 10:30 AM EDT 10 March 2026
Today Tonight and Wednesday. Waves 0.5 metres or less building to 0.5 to 1 near midnight and to 1 to 1.5 early Wednesday morning. Waves subsiding to 0.5 to 1 Wednesday afternoon then building to 1 to 1.5 Wednesday evening.

Extended Forecast

Issued 03:00 AM EDT 10 March 2026
Thursday Wind west 30 knots diminishing to northwest 15 late in the day.
Friday Wind southeast 20 knots veering to south 25.
Saturday Wind west 35 knots diminishing to light late in the day.

Ice Forecast*

Issued 12:00 PM EDT 10 March 2026 Today Tonight and Wednesday Open water.

*Ice Forecast and Warnings also apply to U.S. waters

 

[ Canadian Ice Service ]

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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 10 March 2026 Today Tonight and Wednesday

Ice Coverage

Open water.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 10 March 2026 Today Tonight and Wednesday By 10:30 a.m. EDT Wednesday approaching low 998 mb located over
Indiana.

At 10:30 a.m. EDT today high 1030 mb located over northern Ontario.
By 10:30 a.m. EDT Wednesday high 1034 mb located east of James Bay.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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