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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 14 June 2026

Today Tonight and Monday.

Strong wind warning in effect.

Wind variable 10 knots increasing to west 15 this afternoon and to west 20 late overnight. Wind diminishing to southwest 15 Monday evening.

Showers ending near midnight with a risk of thunderstorms.

Waves

Issued 10:30 AM EDT 14 June 2026
Today Tonight and Monday. Waves 0.5 metres or less building to 1 early this evening and to 1 to 1.5 early Monday morning. Waves subsiding to 0.5 to 1 Monday evening.

Extended Forecast

Issued 03:00 AM EDT 14 June 2026
Tuesday Wind southwest 15 knots diminishing to light late in the day.
Wednesday Wind light becoming southwest 15 knots.
Thursday Wind south 25 knots veering to west 25 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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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 10:30 AM EDT 14 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 10:30 AM EDT 14 June 2026 Today Tonight and Monday At 10:30 a.m. EDT today trough located from James Bay to Lake
Simcoe then to Lake St. Clair.
By 10:30 a.m. EDT Monday trough located on a line
northeast-southwest over the Eastern Seaboard.

At 10:30 a.m. EDT today low 996 mb located over eastern Hudson Bay.
By 10:30 a.m. EDT Monday low 998 mb located over northern Hudson
Bay.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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