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Georgian Bay


Marine Forecast

Issued 03:00 AM EDT 16 October 2021

Today Tonight and Sunday.

Strong wind warning in effect.

Wind northwest 20 knots increasing to northwest 25 near noon. Wind northwest 25 tonight. Wind northwest 20 Sunday.

Rain changing to showers this morning. Risk of waterspouts Sunday.


Issued 03:00 AM EDT 16 October 2021
Today Tonight and Sunday. Waves 0.5 metres or less building to 1 to 1.5 early this morning and to 2 this afternoon. Waves subsiding to 1 to 1.5 near noon Sunday.

Extended Forecast

Issued 03:00 AM EDT 16 October 2021
Monday Wind northwest 20 knots.
Tuesday Wind northwest 15 knots backing to southwest 15.
Wednesday Wind northwest 15 knots backing to southwest 15.

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Map of Great Lakes - Lake Huron marine weather areas N Huron - 45003 W Erie - 45005 S Huron - 45008 Lake Ontario - 45012 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 Great Duck Island Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Western Islands Cove Island Goderich Sarnia Chris Hadfield Airport Tobermory Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal Vineland Station Welland-Pelham Windsor Airport Port Colborne Erieau Point Pelee Burlington Lift Bridge Cobourg Hamilton Munro Int'l Airport Oshawa Executive Airport Point Petre Toronto City Centre Airport CFB Trenton Peterborough Municipal Airport
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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 9 May 2021 Forecasts have ended for the season.

Warnings (In effect)

Strong wind warning in effect

Georgian Bay

Issued 03:00 AM EDT 16 October 2021

'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 or Weatheradio stations.


Technical Marine Synopsis

Issued 3:00 AM EDT 16 October 2021 Today Tonight and Sunday At 3:00 a.m. EDT today low 1003 mb located near Kingston.
By 3:00 a.m. EDT Sunday low 991 mb located over central Quebec.

At 3:00 a.m. EDT today departing low 996 mb located over
northwestern Hudson Bay.

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