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Georgian Bay

Forecast

Marine Forecast

Issued 03:00 AM EDT 10 June 2026

Today Tonight and Thursday.

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

Scattered showers ending near noon with a risk of thunderstorms. Scattered showers overnight and Thursday morning with a risk of thunderstorms. Fog patches.

Waves

Issued 03:00 AM EDT 10 June 2026
Today Tonight and Thursday. Waves 0.5 to 1 metre subsiding to 0.5 or less this morning.

Extended Forecast

Issued 03:00 AM EDT 10 June 2026
Friday Wind southwest 15 knots increasing to southwest 20 in the morning.
Saturday Wind southwest 15 knots.
Sunday Wind northwest 15 knots increasing to northwest 20.

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Weather Conditions

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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 3:00 AM EDT 10 June 2026 Today Tonight and Thursday At 3:00 a.m. EDT today low 1008 mb located over Lake Huron.
By 3:00 a.m. EDT Thursday weakening low 1008 mb located over
southern Quebec.

At 3:00 a.m. EDT today low 994 mb located over southern Manitoba.
By 3:00 a.m. EDT Thursday low 987 mb located over northwestern
Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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