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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 10 July 2026

Today Tonight and Saturday.

Wind northwest 10 knots becoming light this morning then becoming north 10 near midnight. Wind veering to northeast 10 Saturday morning then becoming light Saturday evening.

Waves

Issued 03:00 AM EDT 10 July 2026
Today Tonight and Saturday. Waves 0.5 metres or less.

Extended Forecast

Issued 03:00 AM EDT 10 July 2026
Sunday Wind light.
Monday Wind light.
Tuesday Wind light increasing to southwest 20 knots late in the day.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas CFB Trenton Port Colborne - 45142 Hamilton Munro Int'l Airport Oshawa Executive Airport Port Stanley - 45132 Lake Nipissing - 45152 Point Petre Georgian Bay - 45137 Toronto City Centre Airport Lake Simcoe - 45151 South Georgian Bay - 45143 Prince Edward Point - 45135 Peterborough Municipal Airport South Lake Huron - 45149 Collingwood Lake St Clair - 45147 Grimsby - 45139 Goderich Lagoon City Kingston Airport Muskoka Airport Parry Sound Harbour Grenadier Island Lake Simcoe Regional Airport Wiarton Airport Brockville Western Islands Cove Island Great Duck Island North Channel - 45154 Sarnia Chris Hadfield Airport Gore Bay-Manitoulin Airport Tobermory Harrow AAFC Long Point North Bay Airport Port Weller St. Catharines / Niagara District Airport Greater Sudbury Airport Southeast Shoal Vineland Station Port Colborne Erieau Cobourg Sault Ste. Marie Airport Windsor Airport Welland-Pelham Killarney Ajax - 45159 Point Pelee Burlington Lift Bridge
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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 3:00 AM EDT 10 July 2026 Today Tonight and Saturday At 3:00 a.m. EDT today cold front located on a line
northeast-southwest over Buffalo.
By 3:00 a.m. EDT Saturday cold front located over New England.

At 3:00 a.m. EDT today ridge located on a line north-south over
Lake Superior.
By 3:00 a.m. EDT Saturday ridge located on a line
northeast-southwest over Whitefish Bay.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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