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Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 09 June 2026

Tonight and Wednesday.

Wind light becoming southeast 15 knots this evening then diminishing to southwest 10 early Wednesday morning. Wind becoming light Wednesday evening.

Scattered showers ending near noon Wednesday with a risk of thunderstorms. Fog patches.

Waves

Issued 06:30 PM EDT 09 June 2026
Tonight and Wednesday. Waves 0.5 metres or less building to 0.5 to 1 near midnight then subsiding to 0.5 or less Wednesday morning.

Extended Forecast

Issued 06:30 PM EDT 09 June 2026
Thursday Wind light.
Friday Wind southwest 20 knots.
Saturday Wind southwest 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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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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 9 June 2026 Tonight and Wednesday At 6:30 p.m. EDT tonight low 1010 mb located over Lower Michigan.
By 6:30 p.m. EDT Wednesday low 1005 mb located over eastern Ontario.

At 6:30 p.m. EDT tonight low 994 mb located over western North
Dakota.
By 6:30 p.m. EDT Wednesday low 991 mb located over southeastern
Manitoba.

At 6:30 p.m. EDT tonight departing high 1022 mb located off the
East Coast of the U.S.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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