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Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 09 October 2026

Tonight and Saturday.

Strong wind warning in effect.

Wind northwest 10 knots becoming light this evening then becoming southeast 10 late overnight. Wind increasing to southeast 20 Saturday morning and to southeast 25 Saturday afternoon.

Waves

Issued 06:30 PM EDT 09 October 2026
Tonight and Saturday. Waves 1 metre subsiding to 0.5 or less this evening then building to 1 near noon Saturday. Waves building to 2 Saturday evening.

Extended Forecast

Issued 06:30 PM EDT 09 October 2026
Sunday Wind south 15 knots diminishing to light late in the day.
Monday Wind light becoming southwest 15 knots.
Tuesday Wind southwest 15 knots becoming northeast 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
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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 6:30 PM EDT 09 October 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 9 October 2026 Tonight and Saturday At 6:30 p.m. EDT tonight ridge from 1023 mb high located on a line
northwest-southeast over southern Ontario.
By 6:30 p.m. EDT Saturday ridge from 1032 mb high located on a
line north-south over Vermont.

By 6:30 p.m. EDT Saturday approaching trough located on a line
northeast-southwest over North Dakota.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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