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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 10 July 2026

Today Tonight and Saturday.

Wind light becoming northwest 10 knots early this evening then veering to north 10 near midnight. Wind increasing to northeast 15 early Saturday morning then diminishing to light near noon Saturday.

Showers this afternoon and this evening with a risk of thunderstorms.

Waves

Issued 10:30 AM EDT 10 July 2026
Today Tonight and Saturday. Waves 0.5 metres or less building to 0.5 to 1 Saturday morning then subsiding to 0.5 or less Saturday afternoon.

Extended Forecast

Issued 03:00 AM EDT 10 July 2026
Sunday Wind light.
Monday Wind light.
Tuesday Wind light increasing to southwest 20 knots late in the day.

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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 17 May 2026 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 10 July 2026 Today Tonight and Saturday At 10:30 a.m. EDT today departing cold front located on a line
northeast-southwest over Buffalo.

At 10:30 a.m. EDT today ridge located on a line northwest-southeast
over northeastern Ontario.
By 10:30 a.m. EDT Saturday ridge located on a line north-south
over western Quebec.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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