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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 11 September 2026

Tonight and Saturday.

Wind light becoming south 10 knots near midnight then increasing to south 15 early Saturday morning. Wind diminishing to south 10 near noon Saturday then increasing to south 15 to 20 Saturday evening.

Scattered showers Saturday evening with a risk of thunderstorms.

Waves

Issued 06:30 PM EDT 11 September 2026
Tonight and Saturday. Waves 0.5 metres or less building to 0.5 to 1 Saturday morning then subsiding to 0.5 or less Saturday afternoon. Waves building to 0.5 to 1 Saturday evening.

Extended Forecast

Issued 06:30 PM EDT 11 September 2026
Sunday Wind southwest 15 knots veering to northwest 20 late in the day.
Monday Wind north 15 knots diminishing to light.
Tuesday Wind south 15 knots increasing to south 20.

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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 6:30 PM EDT 11 September 2026 Tonight and Saturday At 6:30 p.m. EDT tonight ridge located on a line northeast-southwest
over southern Ontario.
By 6:30 p.m. EDT Saturday ridge located south of Nova Scotia.

At 6:30 p.m. EDT tonight cold front from 988 mb low located on a
line northeast-southwest over northwestern Ontario.
By 6:30 p.m. EDT Saturday cold front from 988 mb low located on
a line northeast-southwest over northeastern Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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