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Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 28 July 2026

Today Tonight and Wednesday.

Strong wind warning in effect.

Wind north 10 knots increasing to north 15 early this morning and to north 20 near noon. Wind diminishing to north 15 Wednesday afternoon and to northeast 10 Wednesday evening.

Scattered showers ending this evening with a risk of thunderstorms. Fog patches dissipating this morning.

Waves

Issued 03:00 AM EDT 28 July 2026
Today Tonight and Wednesday. Waves 0.5 metres or less building to 0.5 to 1 this morning and to 1 to 1.5 this afternoon. Waves subsiding to 0.5 to 1 Wednesday evening.

Extended Forecast

Issued 03:00 AM EDT 28 July 2026
Thursday Wind light.
Friday Wind light.
Saturday Wind light becoming north 15 knots late in the day.

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Map of Great Lakes - Lake Huron marine weather areas Wiarton Airport Western Islands Cove Island Goderich Lake Simcoe Regional Airport Vineland Station Parry Sound Harbour Sarnia Chris Hadfield Airport Tobermory Muskoka Airport Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Lagoon City Southeast Shoal Burlington Lift Bridge Welland-Pelham Windsor Airport Port Colborne Erieau Peterborough Municipal Airport CFB Trenton Toronto City Centre Airport Point Petre Oshawa Executive Airport Hamilton Munro Int'l Airport Point Pelee Cobourg Port Colborne - 45142 North Channel - 45154 Ajax - 45159 Lake Nipissing - 45152 Sault Ste. Marie Airport Killarney Lake Simcoe - 45151 Greater Sudbury Airport South Lake Huron - 45149 Lake St Clair - 45147 North Bay Airport South Georgian Bay - 45143 Gore Bay-Manitoulin Airport Grimsby - 45139 Georgian Bay - 45137 Great Duck Island Collingwood Kingston Airport Grenadier Island Brockville Prince Edward Point - 45135 Port Stanley - 45132
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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 28 July 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 3:00 AM EDT 28 July 2026 Today Tonight and Wednesday At 3:00 a.m. EDT today low 1001 mb located over Lake Ontario.
By 3:00 a.m. EDT Wednesday low 1000 mb located over northern New
York State.

At 3:00 a.m. EDT today ridge located on a line north-south over
northwestern Ontario.
By 3:00 a.m. EDT Wednesday ridge located on a line
northeast-southwest over Lake Superior.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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