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Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 10 July 2025

Today Tonight and Friday.

Wind light becoming west 10 knots near noon then becoming light this evening. Wind becoming southeast 10 Friday evening.

Fog patches dissipating near noon.

Waves

Issued 10:30 AM EDT 10 July 2025
Today Tonight and Friday. Waves 0.5 metres or less.

Extended Forecast

Issued 03:00 AM EDT 10 July 2025
Saturday Wind light becoming southeast 15 knots in the afternoon.
Sunday Wind southwest 15 knots.
Monday Wind light.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Harrow AAFC Burlington Lift Bridge Oshawa Executive Airport Point Pelee Peterborough Municipal Airport Point Petre Hamilton Munro Int'l Airport Erieau Cobourg Toronto City Centre Airport Port Colborne CFB Trenton South Lake Huron - 45149 Windsor Airport Great Duck Island Gore Bay-Manitoulin Airport North Bay Airport Greater Sudbury Airport Killarney Sault Ste. Marie Airport Ajax - 45159 North Channel - 45154 Lake Nipissing - 45152 Lake Simcoe - 45151 Welland-Pelham Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Vineland Station Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Cove Island Goderich Sarnia Chris Hadfield Airport Western Islands Tobermory Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal
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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 16 May 2025 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 10 July 2025 Today Tonight and Friday At 10:30 a.m. EDT today ridge located on a line northeast-southwest
over northeastern Ontario.
By 10:30 a.m. EDT Friday ridge located on a line northeast-southwest
over southern Ontario.

At 10:30 a.m. EDT today trough located on a line north-south over
the Ontario - Manitoba border.
By 10:30 a.m. EDT Friday trough located on a line
northeast-southwest over Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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