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Georgian Bay


Marine Forecast

Issued 03:00 AM EDT 01 August 2021

Today Tonight and Monday.

Strong wind warning in effect.

Wind light increasing to northeast 15 knots this morning and to northeast 20 near noon. Wind diminishing to north 15 early this evening and to north 10 overnight. Wind becoming light Monday morning then becoming west 15 Monday afternoon.

Risk of thunderstorms and waterspouts today and early this evening.


Issued 03:00 AM EDT 01 August 2021
Today Tonight and Monday. Waves one half metre or less building to one half to one metre near noon then subsiding to one half metre or less Monday morning. Waves building to one half to one metre Monday evening.

Extended Forecast

Issued 03:00 AM EDT 01 August 2021
Tuesday Wind southwest 15 knots diminishing to light in the afternoon.
Wednesday Wind light.
Thursday Wind light.

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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 01 August 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 1 August 2021 Today Tonight and Monday At 3:00 a.m. EDT today low 1009 mb located over southwestern
By 3:00 a.m. EDT Monday low 1010 mb located over New England.

At 3:00 a.m. EDT today ridge located on a line north-south over
By 3:00 a.m. EDT Monday ridge located from Quebec to Nebraska.

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