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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 16 September 2026

Tonight and Thursday.

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

Waves

Issued 06:30 PM EDT 16 September 2026
Tonight and Thursday. Waves 0.5 metres or less.

Extended Forecast

Issued 06:30 PM EDT 16 September 2026
Friday Wind north 15 knots diminishing to light in the afternoon then becoming northeast 15 late in the day.
Saturday Wind east 15 knots.
Sunday Wind northeast 15 knots increasing to northeast 20.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Harrow AAFC Hamilton Munro Int'l Airport CFB Trenton Erieau Toronto City Centre Airport Point Pelee Peterborough Municipal Airport Burlington Lift Bridge Point Petre Cobourg Oshawa Executive Airport South Lake Huron - 45149 Port Colborne Brockville Gore Bay-Manitoulin Airport North Bay Airport Greater Sudbury Airport Killarney Sault Ste. Marie Airport Ajax - 45159 North Channel - 45154 Lake Nipissing - 45152 Lake Simcoe - 45151 Windsor Airport Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Welland-Pelham Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Western Islands Sarnia Chris Hadfield Airport Vineland Station Southeast Shoal St. Catharines / Niagara District Airport Goderich Port Weller Long Point Tobermory
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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 16 September 2026 Tonight and Thursday At 6:30 p.m. EDT tonight high 1029 mb located north of Lake
Superior.
By 6:30 p.m. EDT Thursday high 1021 mb located over eastern Quebec.

At 6:30 p.m. EDT tonight trough located on a line
northeast-southwest over Ohio.
By 6:30 p.m. EDT Thursday trough located on a line
northeast-southwest over eastern New York State.

By 6:30 p.m. EDT Thursday high 1029 mb located over the Ontario -
Manitoba border.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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