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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 17 May 2026

Today Tonight and Monday.

Wind west 10 knots becoming light this afternoon then becoming east 10 near midnight. Wind becoming light Monday morning.

Scattered showers overnight and Monday morning with a risk of thunderstorms. Fog patches dissipating near noon.

Waves

Issued 10:30 AM EDT 17 May 2026
Today Tonight and Monday. Waves 0.5 metres or less.

Extended Forecast

Issued 03:00 AM EDT 17 May 2026
Tuesday Wind southwest 15 knots increasing to southwest 20 in the morning.
Wednesday Wind southwest 15 knots.
Thursday Wind west 15 knots increasing to west 20.

Ice Forecast*

Issued 12:00 PM EDT 16 May 2026 Today Tonight and Sunday Ice free.These are the last forecasts for the season.

*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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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 16 May 2026 Today Tonight and Sunday

Ice Coverage

Ice free.

These are the last forecasts for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 17 May 2026 Today Tonight and Monday At 10:30 a.m. EDT today ridge located on a line northwest-southeast
over northern Ontario.
By 10:30 a.m. EDT Monday ridge located on a line northwest-southeast
over James Bay.

At 10:30 a.m. EDT today low 994 mb located over western Kansas.
By 10:30 a.m. EDT Monday low 1004 mb located over Lake Superior.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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