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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 10 May 2026

Tonight and Monday.

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

Scattered showers overnight and Monday morning.

Waves

Issued 06:30 PM EDT 10 May 2026
Tonight and Monday. Waves 0.5 to 1 metre subsiding to 0.5 or less this evening 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 Huron marine weather areas Wiarton Airport Western Islands Cove Island Goderich Lake Simcoe Regional Airport Vineland Station Parry Sound Harbour Sarnia Chris Hadfield Airport Tobermory Muskoka Airport Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Lagoon City Southeast Shoal Burlington Lift Bridge Welland-Pelham Windsor Airport Port Colborne Erieau Peterborough Municipal Airport CFB Trenton Toronto City Centre Airport Point Petre Oshawa Executive Airport Hamilton Munro Int'l Airport Point Pelee Cobourg Port Colborne - 45142 North Channel - 45154 Ajax - 45159 Lake Nipissing - 45152 Sault Ste. Marie Airport Killarney Lake Simcoe - 45151 Greater Sudbury Airport South Lake Huron - 45149 Lake St Clair - 45147 North Bay Airport South Georgian Bay - 45143 Gore Bay-Manitoulin Airport Grimsby - 45139 Georgian Bay - 45137 Great Duck Island Collingwood Kingston Airport Grenadier Island Brockville Prince Edward Point - 45135 Port Stanley - 45132
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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 3:00 AM EDT 11 May 2026 Today Tonight and Tuesday At 3:00 a.m. EDT today departing low 1001 mb located east of
James Bay.

At 3:00 a.m. EDT today high 1026 mb located over northwestern
Ontario.
By 3:00 a.m. EDT Tuesday high 1025 mb located near Lake Simcoe.

At 3:00 a.m. EDT today low 1002 mb located over Alberta.
By 3:00 a.m. EDT Tuesday low 1003 mb located over Minnesota.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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