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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 17 August 2026

Today Tonight and Tuesday.

Wind variable 10 knots becoming northwest 10 early this morning then backing to west 10 near noon. Wind becoming light near midnight then becoming west 10 near noon Tuesday. Wind backing to southwest 10 Tuesday evening.

Scattered showers ending early this morning with a risk of thunderstorms. Scattered showers this afternoon.

Waves

Issued 03:00 AM EDT 17 August 2026
Today Tonight and Tuesday. Waves 0.5 metres or less.

Extended Forecast

Issued 03:00 AM EDT 17 August 2026
Wednesday Wind southwest 15 knots.
Thursday Wind light.
Friday Wind light.

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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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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 17 August 2026 Today Tonight and Tuesday At 3:00 a.m. EDT today departing trough located on a line
north-south over eastern New York State.

At 3:00 a.m. EDT today ridge located on a line northeast-southwest
over western Lake Superior.
By 3:00 a.m. EDT Tuesday ridge located on a line northeast-southwest
over southwestern Ontario.

At 3:00 a.m. EDT today cold front located on a line
northeast-southwest over southern Manitoba.
By 3:00 a.m. EDT Tuesday cold front located on a line
northeast-southwest over northern Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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