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Western Lake Ontario


Marine Forecast

Issued 06:30 PM EDT 13 July 2024

Tonight and Sunday.

Wind variable 10 knots becoming southwest 10 Sunday morning then increasing to southwest 15 Sunday evening.

Scattered showers Sunday evening with a risk of thunderstorms.


Issued 06:30 PM EDT 13 July 2024
Tonight and Sunday. Waves 0.5 metres or less building to 1 Sunday evening.

Extended Forecast

Issued 06:30 PM EDT 13 July 2024
Monday Wind light becoming southwest 15 knots late in the day.
Tuesday Wind southwest 15 knots.
Wednesday Wind light becoming west 15 knots.

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Map of Great Lakes - Lake Huron marine weather areas N Huron - 45003 W Erie - 45005 S Huron - 45008 Lake Ontario - 45012 Port Stanley - 45132 Prince Edward Point - 45135 Georgian Bay - 45137 Grimsby - 45139 Port Colborne - 45142 South Georgian Bay - 45143 Lake St Clair - 45147 South Lake Huron - 45149 Lake Simcoe - 45151 Lake Nipissing - 45152 North Channel - 45154 Ajax - 45159 Sault Ste. Marie Airport Killarney Greater Sudbury Airport North Bay Airport Gore Bay-Manitoulin Airport Great Duck Island Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Western Islands Cove Island Goderich Sarnia Chris Hadfield Airport Tobermory Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal Vineland Station Welland-Pelham Windsor Airport Port Colborne Erieau Point Pelee Burlington Lift Bridge Cobourg Hamilton Munro Int'l Airport Oshawa Executive Airport Point Petre Toronto City Centre Airport CFB Trenton Peterborough Municipal Airport
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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 27 April 2024 Forecasts have ended for the season.

No watches or warnings in effect.


Technical Marine Synopsis

Issued 6:30 PM EDT 13 July 2024 Tonight and Sunday At 6:30 p.m. EDT tonight ridge located on a line northeast-southwest
over southern Ontario.
By 6:30 p.m. EDT Sunday ridge located on a line northeast-southwest
over eastern Quebec.

At 6:30 p.m. EDT tonight low 1007 mb located over northern Manitoba.
By 6:30 p.m. EDT Sunday low 1000 mb located over southern James Bay.

Great Lakes - Lake Huron Area

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