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Western Lake Ontario

Forecast

Marine Forecast

Issued 10:30 AM EDT 12 June 2025

Today Tonight and Friday.

Wind west 10 knots veering to northwest 10 this afternoon then to northeast 10 near midnight. Wind increasing to northeast 15 early Friday morning.

Waves

Issued 10:30 AM EDT 12 June 2025
Today Tonight and Friday. Waves 0.5 metres or less building to 1 Friday morning.

Extended Forecast

Issued 03:00 AM EDT 12 June 2025
Saturday Wind east 15 knots diminishing to light late in the day.
Sunday Wind light.
Monday Wind light.

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Weather Conditions

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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 10:30 AM EDT 12 June 2025 Today Tonight and Friday At 10:30 a.m. EDT today departing low 987 mb located over northern
Labrador.

At 10:30 a.m. EDT today ridge located on a line northwest-southeast
over central Manitoba.
By 10:30 a.m. EDT Friday high 1026 mb located over northeastern
Ontario.

Great Lakes - Lake Huron Area

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