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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 30 April 2025

Today Tonight and Thursday.

Wind variable 10 knots becoming northeast 10 near midnight then increasing to northeast 15 early Thursday morning. Wind veering to east 20 Thursday afternoon then diminishing to variable 10 Thursday evening.

Showers Thursday afternoon and evening with a risk of thunderstorms. Fog patches forming Thursday evening.

Waves

Issued 10:30 AM EDT 30 April 2025
Today Tonight and Thursday. Waves 0.5 metres or less building to 0.5 to 1 early Thursday morning and to 1 to 1.5 Thursday evening.

Extended Forecast

Issued 03:00 AM EDT 30 April 2025
Friday Wind south 15 knots increasing to southwest 25 in the afternoon then diminishing to west 15 late in the day.
Saturday Wind light.
Sunday Wind light becoming north 15 knots.

Ice Forecast*

Issued 12:00 PM EDT 29 April 2025 Today Tonight and Wednesday Ice free.

*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 29 April 2025 Today Tonight and Wednesday

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 30 April 2025 Today Tonight and Thursday At 10:30 a.m. EDT today high 1025 mb located over northeastern
Ontario.
By 10:30 a.m. EDT Thursday high 1024 mb located over eastern Quebec.

By 10:30 a.m. EDT Thursday approaching low 1004 mb located over
Lake Michigan.

Great Lakes - Lake Huron Area

Another Region

Marine Weather for Canada

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