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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 15 September 2026

Today Tonight and Wednesday.

Wind southeast 10 knots increasing to south 15 early this morning then diminishing to south 10 this afternoon. Wind increasing to southwest 15 this evening then diminishing to northwest 10 Wednesday morning. Wind becoming light near noon Wednesday then becoming northeast 15 Wednesday evening.

Scattered showers today tonight and Wednesday morning.

Waves

Issued 03:00 AM EDT 15 September 2026
Today Tonight and Wednesday. Waves 0.5 metres or less building to 0.5 to 1 this morning then subsiding to 0.5 or less Wednesday morning.

Extended Forecast

Issued 03:00 AM EDT 15 September 2026
Thursday Wind light becoming northwest 15 knots late in the day.
Friday Wind north 15 knots.
Saturday Wind east 15 knots.

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Map of Great Lakes - Lake Huron marine weather areas Erieau CFB Trenton Muskoka Airport Parry Sound Harbour Toronto City Centre Airport Lake Simcoe Regional Airport Wiarton Airport Point Petre Lagoon City Western Islands Cobourg Port Colborne Windsor Airport Point Pelee Welland-Pelham Vineland Station Burlington Lift Bridge Southeast Shoal St. Catharines / Niagara District Airport Goderich Port Weller Long Point Harrow AAFC Hamilton Munro Int'l Airport Tobermory Sarnia Chris Hadfield Airport Oshawa Executive Airport Collingwood 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 Peterborough Municipal Airport Brockville Grenadier Island Kingston Airport
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land station Land Station
Ice Conditions

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

Ice Forecasts

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 September 2026 Today Tonight and Wednesday At 3:00 a.m. EDT today high 1027 mb located over New York State.
By 3:00 a.m. EDT Wednesday high 1027 mb located off the East Coast
of the U.S.

At 3:00 a.m. EDT today low 992 mb located over southeastern
Manitoba.
By 3:00 a.m. EDT Wednesday low 996 mb located over eastern
Hudson Bay.

Great Lakes - Lake Huron Area

Another Region

Marine Weather for Canada

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