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Southern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 20 April 2026

Tonight and Tuesday.

Wind southwest 10 knots increasing to south 15 near midnight then backing to southeast 20 near noon Tuesday. Wind diminishing to light Tuesday evening.

Waves

Issued 06:30 PM EDT 20 April 2026
Tonight and Tuesday. Waves 0.5 metres or less building to 0.5 to 1 late overnight and to 1 to 1.5 Tuesday afternoon. Waves subsiding to 0.5 or less Tuesday evening.

Extended Forecast

Issued 06:30 PM EDT 20 April 2026
Wednesday Wind light.
Thursday Wind light becoming southeast 15 knots late in the day.
Friday Wind southeast 20 knots.

Ice Forecast*

Issued 12:00 PM EDT 20 April 2026 Today Tonight and Tuesday Open water.

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

 

[ Canadian Ice Service ]

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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 20 April 2026 Today Tonight and Tuesday

Ice Coverage

Open water.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 20 April 2026 Tonight and Tuesday At 6:30 p.m. EDT tonight high 1030 mb located over Lake Erie.
By 6:30 p.m. EDT Tuesday high 1028 mb located over New Brunswick.

At 6:30 p.m. EDT tonight trough located on a line north-south over
Lake of the Woods.
By 6:30 p.m. EDT Tuesday trough located on a line
northeast-southwest over northeastern Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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