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Northern Georgian Bay

Forecast

Marine Forecast

Issued 03:00 AM EST 13 January 2026

Today Tonight and Wednesday.

Wind southwest 15 knots backing to south 20 this morning then veering to southwest 25 this afternoon. Wind veering to west 20 near midnight then to north 25 Wednesday morning.

Scattered flurries ending early this morning. Snow beginning near noon and changing to scattered showers or scattered flurries this evening and ending overnight. Flurries Wednesday afternoon and evening.

Risk of freezing spray Wednesday.

Waves

Issued 03:00 AM EST 13 January 2026
Today Tonight and Wednesday. Waves 0.5 to 1 metre building to 1.5 near noon.

Extended Forecast

Issued 03:00 AM EST 13 January 2026
Thursday Wind north 25 knots diminishing to northwest 15 in the afternoon and to light late in the day.
Friday Wind southwest 25 knots.
Saturday Wind north 15 knots increasing to north 20 late in the day.

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Weather Conditions

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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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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 3:00 AM EST 13 January 2026 Today Tonight and Wednesday At 3:00 a.m. EST today departing ridge located over the Ontario -
Quebec border.

At 3:00 a.m. EST today low 991 mb located over the Ontario -
Manitoba border.
By 3:00 a.m. EST Wednesday low 989 mb located over western Quebec.

By 3:00 a.m. EST Wednesday ridge located on a line north-south
over Manitoba.

Great Lakes - Lake Erie and Lake Ontario Area

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