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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 11 December 2025

Tonight and Friday.

Wind northwest 15 to 20 knots becoming northwest 15 near midnight then diminishing to west 10 Friday afternoon. Wind increasing to southwest 15 Friday evening.

Scattered flurries Friday evening. Visibility 1 mile or less in flurries.

Waves

Issued 06:30 PM EST 11 December 2025
Tonight and Friday. Waves 1 metre.

Extended Forecast

Issued 06:30 PM EST 11 December 2025
Saturday Wind southwest 25 knots veering to west 30 in the morning then diminishing to northwest 20 late in the day.
Sunday Wind north 20 knots.
Monday Wind light increasing to southwest 20 knots.

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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
Legend:
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 16 May 2025 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EST 11 December 2025 Tonight and Friday At 6:30 p.m. EST tonight departing low 986 mb located over eastern
Quebec.

At 6:30 p.m. EST tonight ridge located on a line north-south over
northwestern Ontario.
By 6:30 p.m. EST Friday ridge located on a line north-south over
the Ontario - Quebec border.

At 6:30 p.m. EST tonight trough located on a line north-south
over Manitoba.
By 6:30 p.m. EST Friday trough located on a line north-south over
Lake Superior.

Great Lakes - Lake Erie and Lake Ontario Area

Another Region

Marine Weather for Canada

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