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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 15 August 2026

Today Tonight and Sunday.

Wind northeast 10 knots veering to east 10 early this morning then increasing to east 15 this afternoon. Wind veering to south 15 near midnight then diminishing to variable 10 near noon Sunday. Wind increasing to northwest 15 Sunday evening.

Showers Sunday afternoon and evening with a risk of thunderstorms.

Waves

Issued 03:00 AM EDT 15 August 2026
Today Tonight and Sunday. Waves 0.5 metres or less building to 0.5 to 1 early this evening then subsiding to 0.5 or less Sunday afternoon.

Extended Forecast

Issued 03:00 AM EDT 15 August 2026
Monday Wind northwest 20 knots.
Tuesday Wind light becoming southwest 15 knots.
Wednesday Wind west 15 knots veering to north 15.

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

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

Ice Forecasts

Lake Huron

Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.

Ice Forecasts

Lake Michigan

Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 15 August 2026 Today Tonight and Sunday At 3:00 a.m. EDT today ridge located on a line northwest-southeast
over Ontario.
By 3:00 a.m. EDT Sunday ridge located on a line northwest-southeast
over southern Quebec.

At 3:00 a.m. EDT today trough located on a line north-south over
North Dakota.
By 3:00 a.m. EDT Sunday trough located on a line north-south over
Lake Nipigon.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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