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Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 21 May 2026

Tonight and Friday.

Wind northwest 10 knots becoming east 10 near midnight then increasing to east 15 Friday evening.

Waves

Issued 06:30 PM EDT 21 May 2026
Tonight and Friday. Waves 0.5 metres or less.

Extended Forecast

Issued 06:30 PM EDT 21 May 2026
Saturday Wind east 15 knots increasing to east 20 in the morning.
Sunday Wind southeast 25 knots diminishing to light late in the day.
Monday Wind light becoming 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
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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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 21 May 2026 Tonight and Friday At 6:30 p.m. EDT tonight high 1031 mb located over eastern Lake
Superior.
By 6:30 p.m. EDT Friday ridge from 1033 mb high located on a line
north-south over western Quebec.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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