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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 12 January 2026

Tonight and Tuesday.

Wind southwest 25 knots diminishing to south 15 near noon Tuesday then increasing to southwest 25 Tuesday evening.

Scattered flurries or scattered showers this evening. Scattered showers Tuesday late in the day.

Waves

Issued 06:30 PM EST 12 January 2026
Tonight and Tuesday. Waves 2 metres subsiding to 1.5 early Tuesday morning and to 1 Tuesday afternoon. Waves building to 2 Tuesday evening.

Extended Forecast

Issued 06:30 PM EST 12 January 2026
Wednesday Wind southwest 30 knots diminishing to southwest 20 in the morning then veering to northwest 15 late in the day.
Thursday Wind northwest 20 knots.
Friday Wind light increasing to southwest 20 knots.

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Map of Great Lakes - Lake Huron marine weather areas Cove Island Goderich Oshawa Executive Airport CFB Trenton Western Islands Wiarton Airport Point Petre Lake Simcoe Regional Airport Parry Sound Harbour Toronto City Centre Airport Muskoka Airport Lagoon City Brockville Hamilton Munro Int'l Airport Sarnia Chris Hadfield Airport Tobermory Cobourg Harrow AAFC Long Point Port Weller Burlington Lift Bridge St. Catharines / Niagara District Airport Southeast Shoal Point Pelee Vineland Station Welland-Pelham Erieau Windsor Airport Port Colborne Killarney South Georgian Bay - 45143 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Lake St Clair - 45147 South Lake Huron - 45149 Sault Ste. Marie Airport Lake Simcoe - 45151 Collingwood Greater Sudbury Airport North Bay Airport Kingston Airport Peterborough Municipal Airport Grenadier Island Port Colborne - 45142 Great Duck Island Ajax - 45159 Gore Bay-Manitoulin Airport North Channel - 45154 Lake Nipissing - 45152
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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 12 January 2026 Tonight and Tuesday At 6:30 p.m. EST tonight ridge located on a line north-south over
Lake Nipigon.
By 6:30 p.m. EST Tuesday ridge located on a line north-south over
Nova Scotia.

At 6:30 p.m. EST tonight low 993 mb located over northern Manitoba.
By 6:30 p.m. EST Tuesday low 988 mb located over northeastern
Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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