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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 08 July 2025

Today Tonight and Wednesday.

Wind north 10 knots becoming light early this morning. Wind light tonight and Wednesday.

Scattered showers Wednesday afternoon and evening with a risk of thunderstorms.

Waves

Issued 03:00 AM EDT 08 July 2025
Today Tonight and Wednesday. Waves less than 0.5 metres.

Extended Forecast

Issued 03:00 AM EDT 08 July 2025
Thursday Wind light.
Friday Wind light.
Saturday Wind light becoming east 15 knots.

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Map of Great Lakes - Lake Huron marine weather areas Cove Island Goderich Oshawa Executive Airport CFB Trenton Western Islands Wiarton Airport Point Petre Lake Simcoe Regional Airport Parry Sound Harbour Toronto City Centre Airport Muskoka Airport Lagoon City Brockville Hamilton Munro Int'l Airport Sarnia Chris Hadfield Airport Tobermory Cobourg Harrow AAFC Long Point Port Weller Burlington Lift Bridge St. Catharines / Niagara District Airport Southeast Shoal Point Pelee Vineland Station Welland-Pelham Erieau Windsor Airport Port Colborne Killarney South Georgian Bay - 45143 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Lake St Clair - 45147 South Lake Huron - 45149 Sault Ste. Marie Airport Lake Simcoe - 45151 Collingwood Greater Sudbury Airport North Bay Airport Kingston Airport Peterborough Municipal Airport Grenadier Island Port Colborne - 45142 Great Duck Island Ajax - 45159 Gore Bay-Manitoulin Airport North Channel - 45154 Lake Nipissing - 45152
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Ice Conditions

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 8 July 2025 Today Tonight and Wednesday At 3:00 a.m. EDT today departing low 1012 mb located over Maine.

At 3:00 a.m. EDT today ridge located on a line northeast-southwest
over northeastern Ontario.
By 3:00 a.m. EDT Wednesday ridge located on a line
northeast-southwest over southern Ontario.

At 3:00 a.m. EDT today low 1015 mb located over northern Minnesota.
By 3:00 a.m. EDT Wednesday low 1014 mb located over central Lake
Michigan.

By 3:00 a.m. EDT Wednesday ridge located on a line
northeast-southwest over northwestern Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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