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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 26 October 2026

Today Tonight and Tuesday.

Wind southwest 15 knots diminishing to west 10 this morning then increasing to north 15 early this evening. Wind veering to northeast 15 overnight then diminishing to east 10 near noon Tuesday.

Waves

Issued 03:00 AM EDT 26 October 2026
Today Tonight and Tuesday. Waves 0.5 to 1 metre subsiding to 0.5 or less near noon then building to 0.5 to 1 this evening. Waves subsiding to 0.5 or less Tuesday afternoon.

Extended Forecast

Issued 03:00 AM EDT 26 October 2026
Wednesday Wind light.
Thursday Wind south 15 knots veering to southwest 15 to 20.
Friday Wind west 15 knots diminishing to light late in the day.

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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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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 3:00 AM EDT 26 October 2026 Today Tonight and Tuesday At 3:00 a.m. EDT today departing ridge located on a line
northeast-southwest over West Virginia.

At 3:00 a.m. EDT today cold front located on a line
northeast-southwest over Lake Nipissing.
By 3:00 a.m. EDT Tuesday departing cold front located off the East
Coast of the U.S.

At 3:00 a.m. EDT today high 1040 mb located over southern
Saskatchewan.
By 3:00 a.m. EDT Tuesday ridge located on a line northwest-southeast
over Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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