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Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 11 June 2026

Tonight and Friday.

Strong wind warning in effect.

Wind west 10 knots backing to south 10 this evening then increasing to south 15 near midnight. Wind increasing to west 20 early Friday morning then diminishing to west 15 near noon Friday. Wind diminishing to southwest 10 Friday evening.

Scattered showers overnight and Friday morning with a risk of thunderstorms. Fog patches dissipating Friday morning.

Waves

Issued 06:30 PM EDT 11 June 2026
Tonight and Friday. Waves 0.5 metres or less building to 0.5 to 1 late overnight and to 1 to 1.5 Friday morning. Waves subsiding to 0.5 to 1 Friday afternoon and to 0.5 or less Friday evening.

Extended Forecast

Issued 06:30 PM EDT 11 June 2026
Saturday Wind light becoming southwest 15 knots in the morning then diminishing to light late in the day.
Sunday Wind west 15 knots diminishing to light.
Monday Wind west 15 knots.

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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:
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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 6:30 PM EDT 11 June 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 11 June 2026 Tonight and Friday At 6:30 p.m. EDT tonight quasi-stationary low 984 mb located over
northeastern Manitoba.

At 6:30 p.m. EDT tonight trough located on a line north-south over
northwestern Ontario.
By 6:30 p.m. EDT Friday trough located on a line northwest-southeast
over James Bay.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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