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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 15 September 2026

Tonight and Wednesday.

Wind south 10 knots increasing to southwest 15 this evening then diminishing to variable 10 Wednesday morning. Wind becoming north 10 Wednesday evening.

Scattered showers ending Wednesday morning. Risk of thunderstorms early this evening.

Waves

Issued 06:30 PM EDT 15 September 2026
Tonight and Wednesday. Waves 0.5 to 1 metre subsiding to 0.5 or less near noon Wednesday.

Extended Forecast

Issued 06:30 PM EDT 15 September 2026
Thursday Wind northeast 15 knots diminishing to light in the morning.
Friday Wind north 15 knots.
Saturday Wind northeast 15 knots.

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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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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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 15 September 2026 Tonight and Wednesday At 6:30 p.m. EDT tonight low 995 mb located over southern Hudson
Bay.
By 6:30 p.m. EDT Wednesday departing low 993 mb located over
northern Quebec.

At 6:30 p.m. EDT tonight ridge from 1029 mb high located on a line
northeast-southwest over the East Coast of the U.S.
By 6:30 p.m. EDT Wednesday merging ridge located from James Bay
to Pennsylvania.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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