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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 12 June 2026

Today Tonight and Saturday.

Strong wind warning in effect.

Wind light becoming south 10 knots this morning then increasing to west 20 this afternoon. Wind diminishing to west 15 this evening and to southwest 10 Saturday afternoon.

Scattered showers and fog patches ending this afternoon with a risk of thunderstorms.

Waves

Issued 03:00 AM EDT 12 June 2026
Today Tonight and Saturday. Waves 0.5 metres or less building to 1 early this evening then subsiding to 0.5 or less Saturday evening.

Extended Forecast

Issued 03:00 AM EDT 12 June 2026
Sunday Wind southwest 15 knots veering to northwest 20 late in the day.
Monday Wind west 20 knots diminishing to light late in the day.
Tuesday Wind light.

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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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land station Land Station
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

Warnings (In effect)

Strong wind warning in effect

Eastern Lake Ontario

Issued 03:00 AM EDT 12 June 2026

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 12 June 2026 Today Tonight and Saturday At 3:00 a.m. EDT today low 984 mb located over northeastern
Manitoba.
By 3:00 a.m. EDT Saturday low 992 mb located over Hudson Bay.

At 3:00 a.m. EDT today trough located over Lake Superior to
Lake Erie.
By 3:00 a.m. EDT Saturday trough located on a line
northwest-southeast over central Quebec.

By 3:00 a.m. EDT Saturday ridge located on a line
northeast-southwest over southern Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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