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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 10 May 2026

Tonight and Monday.

Wind southwest 15 knots diminishing to west 10 this evening then increasing to southwest 15 Monday morning. Wind diminishing to northwest 10 Monday evening.

Waves

Issued 06:30 PM EDT 10 May 2026
Tonight and Monday. Waves 0.5 to 1 metre subsiding to 0.5 or less near midnight then building to 0.5 to 1 near noon Monday.

Extended Forecast

Issued 06:30 PM EDT 10 May 2026
Tuesday Wind light.
Wednesday Wind southeast 20 knots diminishing to light late in the day.
Thursday Wind light.

Ice Forecast*

Issued 12:00 PM EDT 10 May 2026 Today Tonight and Monday 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
Legend:
buoy Buoy
land station Land Station
Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 10 May 2026 Today Tonight and Monday

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 10 May 2026 Tonight and Monday At 6:30 p.m. EDT tonight departing low 999 mb located east of
James Bay.

At 6:30 p.m. EDT tonight high 1023 mb located near Lake of the
Woods.
By 6:30 p.m. EDT Monday high 1024 mb located over northern Lower
Michigan.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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