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Eastern Lake Ontario

Forecast

Marine Forecast

Issued 03:00 AM EDT 25 April 2025

Today Tonight and Saturday.

Wind light becoming northeast 15 knots early this morning then diminishing to east 10 this evening. Wind increasing to west 15 Saturday morning and to west 30 near noon Saturday. Wind veering to northwest 25 Saturday evening.

Showers beginning this morning. Risk of thunderstorms today and Saturday. Fog patches forming near midnight and dissipating near noon Saturday.

Waves

Issued 03:00 AM EDT 25 April 2025
Today Tonight and Saturday. Waves 0.5 metres or less building to 0.5 to 1 this morning and to 2 to 3 near noon Saturday.

Extended Forecast

Issued 03:00 AM EDT 25 April 2025
Sunday Wind northwest 15 knots diminishing to light in the afternoon.
Monday Wind light.
Tuesday Wind light becoming southwest 15 knots.

Ice Forecast*

Issued 12:00 PM EDT 24 April 2025 Today Tonight and Friday Ice free.

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

 

[ Canadian Ice Service ]

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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 24 April 2025 Today Tonight and Friday

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 25 April 2025 Today Tonight and Saturday At 3:00 a.m. EDT today quasi-stationary ridge located on a line
northeast-southwest over northern Ontario.

At 3:00 a.m. EDT today trough located on a line northeast-southwest
over southern Ontario.
By 3:00 a.m. EDT Saturday approaching low 1010 mb located south
of Lake Ontario.

Great Lakes - Lake Huron Area

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