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Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 22 May 2026

Today Tonight and Saturday.

Strong wind warning in effect.

Wind east 10 knots increasing to east 15 this evening and to east 20 Saturday morning. Wind veering to southeast 20 near noon Saturday.

Rain Saturday afternoon and evening. Fog patches forming Saturday evening.

Waves

Issued 03:00 AM EDT 22 May 2026
Today Tonight and Saturday. Waves 0.5 metres or less building to 0.5 to 1 near midnight and to 1 to 1.5 Saturday morning.

Extended Forecast

Issued 03:00 AM EDT 22 May 2026
Sunday Wind southeast 20 knots becoming southeast 15 to 20 in the morning then veering to southwest 15 in the afternoon.
Monday Wind light becoming west 15 knots.
Tuesday Wind light.

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

Warnings (In effect)

Strong wind warning in effect

Georgian Bay

Issued 03:00 AM EDT 22 May 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 or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 22 May 2026 Today Tonight and Saturday At 3:00 a.m. EDT today high 1031 mb located over eastern Lake
Superior.
By 3:00 a.m. EDT Saturday high 1033 mb located over eastern Quebec.

At 3:00 a.m. EDT today low 1011 mb located over western South
Dakota.
By 3:00 a.m. EDT Saturday low 1007 mb located over western
Minnesota.

At 3:00 a.m. EDT today low 1006 mb located over southern Colorado.
By 3:00 a.m. EDT Saturday low 1011 mb located over southern Ohio.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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