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Western Lake Ontario

Warnings

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 veering to east 15 late this morning. Wind diminishing to east 10 early this evening then becoming variable 10 overnight. Wind increasing to west 15 Saturday morning and to west 25 near noon Saturday. Wind veering to northwest 20 Saturday evening.

Showers. Risk of thunderstorms today and tonight. Fog patches dissipating near noon. Fog patches forming this evening 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 1 early this morning then subsiding to 0.5 this evening. Waves building to 2 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 Open water.

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

 

[ Canadian Ice Service ]

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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

Open water.

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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Marine Weather for Canada

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