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Southern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 03:39 PM EST 15 January 2026

Today Tonight and Friday.

Wind north 20 knots diminishing to north 15 early this evening and to northwest 10 late this evening. Wind becoming variable 10 late overnight then increasing to southeast 15 near noon Friday. Wind increasing to southeast 20 Friday evening.

Scattered flurries ending near midnight. Flurries Friday late in the day. Visibility 1 mile or less in flurries.

Risk of freezing spray late this afternoon.

Waves

Issued 03:38 PM EST 15 January 2026
Today Tonight and Friday. Waves 1 to 1.5 metres subsiding to 0.5 to 1 this evening and to 0.5 or less near midnight. Waves building to 0.5 to 1 Friday afternoon and to 1 to 1.5 Friday evening.

Extended Forecast

Issued 03:00 AM EST 15 January 2026
Saturday Wind southwest 15 knots increasing to southwest 20 in the morning.
Sunday Wind west 15 knots backing to southwest 20 late in the day.
Monday Wind southwest 25 knots veering to northwest 30 late in the day.

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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 6:30 PM EST 15 January 2026 Tonight and Friday At 6:30 p.m. EST tonight low 990 mb located over southeastern
Quebec.
By 6:30 p.m. EST Friday low 980 mb located over the Maritimes.

At 6:30 p.m. EST tonight ridge located on a line north-south over
Lake Huron.
By 6:30 p.m. EST Friday ridge located on a line northwest-southeast
over the Eastern Seaboard.

At 6:30 p.m. EST tonight trough located on a line
northwest-southeast over northwestern Ontario.
By 6:30 p.m. EST Friday trough located on a line northwest-southeast
over Upper Michigan.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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