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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 15 September 2026

Today Tonight and Wednesday.

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

Scattered showers tonight and Wednesday morning.

Waves

Issued 10:30 AM EDT 15 September 2026
Today Tonight and Wednesday. Waves 0.5 to 1 metre 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 10:30 AM EDT 15 September 2026 Today Tonight and Wednesday At 10:30 a.m. EDT today quasi-stationary ridge from 1030 mb high
located on a line northeast-southwest over the East Coast of
the U.S.

At 10:30 a.m. EDT today low 994 mb located southwest of Hudson Bay.
By 10:30 a.m. EDT Wednesday low 998 mb located over northern Quebec.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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