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Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 11:51 PM EDT 14 July 2026

Tonight and Wednesday.

Strong wind warning in effect.

Wind west 20 knots diminishing to northwest 15 late overnight and to light early Wednesday morning. Wind becoming west 15 Wednesday afternoon then diminishing to northwest 10 Wednesday evening.

Waves

Issued 06:30 PM EDT 14 July 2026
Tonight and Wednesday. Waves 1 to 1.5 metres subsiding to 0.5 to 1 late overnight and to 0.5 or less Wednesday morning. Waves building to 0.5 to 1 Wednesday evening.

Extended Forecast

Issued 06:30 PM EDT 14 July 2026
Thursday Wind light.
Friday Wind northeast 15 knots diminishing to light.
Saturday Wind southeast 15 knots backing to northeast 15.

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

Warnings (In effect)

Strong wind warning in effect

Georgian Bay

Issued 11:51 PM EDT 14 July 2026

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 14 July 2026 Tonight and Wednesday At 6:30 p.m. EDT tonight quasi-stationary ridge located on a line
northwest-southeast over Minnesota.

At 6:30 p.m. EDT tonight trough located on a line east-west over
Nickel Belt.
By 6:30 p.m. EDT Wednesday trough located on a line
northeast-southwest over the St. Lawrence River.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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