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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 13 April 2026

Tonight and Tuesday.

Wind southwest 15 knots diminishing to light near midnight then becoming southeast 10 early Tuesday morning. Wind increasing to southwest 20 near noon Tuesday then diminishing to southwest 15 Tuesday evening.

Scattered showers this evening. Showers Tuesday with a risk of thunderstorms. Fog patches.

Waves

Issued 06:30 PM EDT 13 April 2026
Tonight and Tuesday. Waves 1 metre subsiding to 0.5 or less late overnight then building to 0.5 to 1 Tuesday afternoon.

Extended Forecast

Issued 06:30 PM EDT 13 April 2026
Wednesday Wind light.
Thursday Wind light becoming southwest 15 knots.
Friday Wind southwest 15 knots diminishing to light late in the day.

Ice Forecast*

Issued 12:00 PM EDT 13 April 2026 Today Tonight and Tuesday Ice free.

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

 

[ Canadian Ice Service ]

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas CFB Trenton Port Colborne - 45142 Hamilton Munro Int'l Airport Oshawa Executive Airport Port Stanley - 45132 Lake Nipissing - 45152 Point Petre Georgian Bay - 45137 Toronto City Centre Airport Lake Simcoe - 45151 South Georgian Bay - 45143 Prince Edward Point - 45135 Peterborough Municipal Airport South Lake Huron - 45149 Collingwood Lake St Clair - 45147 Grimsby - 45139 Goderich Lagoon City Kingston Airport Muskoka Airport Parry Sound Harbour Grenadier Island Lake Simcoe Regional Airport Wiarton Airport Brockville Western Islands Cove Island Great Duck Island North Channel - 45154 Sarnia Chris Hadfield Airport Gore Bay-Manitoulin Airport Tobermory Harrow AAFC Long Point North Bay Airport Port Weller St. Catharines / Niagara District Airport Greater Sudbury Airport Southeast Shoal Vineland Station Port Colborne Erieau Cobourg Sault Ste. Marie Airport Windsor Airport Welland-Pelham Killarney Ajax - 45159 Point Pelee Burlington Lift Bridge
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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 13 April 2026 Today Tonight and Tuesday

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 13 April 2026 Tonight and Tuesday At 6:30 p.m. EDT tonight ridge located over northern Ontario.
By 6:30 p.m. EDT Tuesday departing ridge located on a line
northwest-southeast over northern Quebec.

At 6:30 p.m. EDT tonight low 999 mb located over eastern Nebraska.
By 6:30 p.m. EDT Tuesday low 1005 mb located over eastern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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