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Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 11 September 2026

Today Tonight and Saturday.

Wind variable 10 knots becoming south 10 this evening then increasing to south 15 overnight. Wind veering to southwest 15 Saturday evening.

Scattered showers Saturday evening with a risk of thunderstorms.

Waves

Issued 03:00 AM EDT 11 September 2026
Today Tonight and Saturday. Waves 1 metre subsiding to 0.5 or less early this morning then building to 0.5 to 1 Saturday morning.

Extended Forecast

Issued 03:00 AM EDT 11 September 2026
Sunday Wind northwest 15 knots increasing to northwest 20 in the afternoon.
Monday Wind north 15 knots increasing to southeast 20 late in the day.
Tuesday Wind southeast 25 knots veering to southwest 25.

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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 11 September 2026 Today Tonight and Saturday At 3:00 a.m. EDT today ridge located on a line north-south over
northern Lake Huron.
By 3:00 a.m. EDT Saturday ridge located on a line north-south over
the St. Lawrence River.

At 3:00 a.m. EDT today trough from 990 mb low located on a line
north-south over the Ontario - Manitoba border.
By 3:00 a.m. EDT Saturday trough from 988 mb low located on a line
northeast-southwest over western Lake Superior.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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