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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 04 September 2026

Tonight and Saturday.

Wind west 10 knots veering to north 10 this evening then to northeast 10 late overnight. Wind becoming light near noon Saturday.

Waves

Issued 06:30 PM EDT 04 September 2026
Tonight and Saturday. Waves 0.5 metres or less.

Extended Forecast

Issued 06:30 PM EDT 04 September 2026
Sunday Wind light becoming northeast 15 knots in the morning then diminishing to light in the afternoon.
Monday Wind light.
Tuesday Wind light becoming southeast 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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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 4 September 2026 Tonight and Saturday At 6:30 p.m. EDT tonight low 1003 mb located over Nova Scotia.
By 6:30 p.m. EDT Saturday low 996 mb located east of Nova Scotia.

At 6:30 p.m. EDT tonight ridge located from Hudson Bay to Lake
Superior.
By 6:30 p.m. EDT Saturday ridge located on a line
northeast-southwest over northeastern Ontario.

At 6:30 p.m. EDT tonight trough located on a line north-south
over Saskatchewan.
By 6:30 p.m. EDT Saturday trough located on a line
northeast-southwest over northeastern Manitoba.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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