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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 06 March 2026

Tonight and Saturday.

Wind east 15 knots diminishing to variable 10 this evening then increasing to southwest 20 late overnight. Wind increasing to southwest 25 near noon Saturday.

Showers and fog patches tonight and Saturday with a risk of thunderstorms.

Waves

Issued 06:30 PM EST 06 March 2026
Tonight and Saturday. Waves 0.5 to 1 metre subsiding to 0.5 or less near midnight then building to 1 early Saturday morning. Waves building to 1 to 1.5 Saturday afternoon.

Extended Forecast

Issued 06:30 PM EST 06 March 2026
Sunday Wind southwest 20 knots.
Monday Wind southwest 20 knots.
Tuesday Wind southwest 15 knots diminishing to 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 16 May 2025 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EST 6 March 2026 Tonight and Saturday At 6:30 p.m. EST tonight departing ridge located on a line
north-south over Labrador.

At 6:30 p.m. EST tonight trough located from Iowa to Lake Superior.
By 6:30 p.m. EST Saturday trough located on a line
northeast-southwest over eastern Ontario.

By 6:30 p.m. EST Saturday ridge located on a line north-south over
northern Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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