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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 16 October 2026

Today Tonight and Saturday.

Strong wind warning in effect.

Wind south 20 knots increasing to southwest 30 near noon then veering to northwest 25 early this evening. Wind diminishing to northwest 15 Saturday morning then backing to west 15 Saturday afternoon. Wind diminishing to west 10 Saturday evening.

Scattered showers ending Saturday morning. Risk of thunderstorms late this morning.

Waves

Issued 10:30 AM EDT 16 October 2026
Today Tonight and Saturday. Waves 1.5 metres building to 2 this afternoon then subsiding to 1 to 1.5 this evening. Waves subsiding to 0.5 near noon Saturday.

Extended Forecast

Issued 03:00 AM EDT 16 October 2026
Sunday Wind southwest 20 knots.
Monday Wind southwest 20 knots diminishing to light late in the day.
Tuesday Wind light becoming northeast 15 knots late in the day.

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Map of Great Lakes - Lake Huron marine weather areas Erieau CFB Trenton Muskoka Airport Parry Sound Harbour Toronto City Centre Airport Lake Simcoe Regional Airport Wiarton Airport Point Petre Lagoon City Western Islands Cobourg Port Colborne Windsor Airport Point Pelee Welland-Pelham Vineland Station Burlington Lift Bridge Southeast Shoal St. Catharines / Niagara District Airport Goderich Port Weller Long Point Harrow AAFC Hamilton Munro Int'l Airport Tobermory Sarnia Chris Hadfield Airport Oshawa Executive Airport Collingwood Port Stanley - 45132 Prince Edward Point - 45135 Georgian Bay - 45137 Grimsby - 45139 Port Colborne - 45142 South Georgian Bay - 45143 Lake St Clair - 45147 South Lake Huron - 45149 Lake Simcoe - 45151 Lake Nipissing - 45152 North Channel - 45154 Ajax - 45159 Sault Ste. Marie Airport Killarney Greater Sudbury Airport North Bay Airport Gore Bay-Manitoulin Airport Peterborough Municipal Airport Brockville Grenadier Island Kingston Airport
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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

Warnings (In effect)

Strong wind warning in effect

Eastern Lake Ontario

Issued 10:30 AM EDT 16 October 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 16 October 2026 Today Tonight and Saturday At 10:30 a.m. EDT today low 999 mb located over eastern Ontario.
By 10:30 a.m. EDT Saturday departing low 984 mb located over
southern Labrador.

At 10:30 a.m. EDT today ridge located on a line northeast-southwest
over North Dakota.
By 10:30 a.m. EDT Saturday ridge located on a line
northeast-southwest over Wisconsin.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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