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Southern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 17 April 2026

Today Tonight and Saturday.

Wind light increasing to southeast 20 knots this evening and to southeast 25 late overnight. Wind veering to south 20 Saturday morning then to west 20 Saturday afternoon. Wind veering to northwest 15 Saturday evening.

Showers Saturday with a risk of thunderstorms. Fog patches dissipating Saturday evening.

Waves

Issued 10:30 AM EDT 17 April 2026
Today Tonight and Saturday. Over open water waves 0.5 metres or less building to 0.5 to 1 near midnight and to 1.5 early Saturday morning.

Extended Forecast

Issued 03:00 AM EDT 17 April 2026
Sunday Wind northwest 20 knots increasing to northwest 25 in the afternoon.
Monday Wind northwest 20 knots backing to southwest 15 late in the day.
Tuesday Wind south 15 knots increasing to south 20.

Ice Forecast*

Issued 12:00 PM EDT 17 April 2026 Today Tonight and Saturday Open water except 3 tenths thick lake ice along the northeastern shore. Consolidated rotten thick lake ice along parts of the northeastern shore.

*Ice Forecast and Warnings also apply to U.S. waters

 

[ Canadian Ice Service ]

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

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Issued 12:00 PM EDT 17 April 2026 Today Tonight and Saturday

Ice Coverage

Open water except 3 tenths thick lake ice along the northeastern
shore. Consolidated rotten thick lake ice along parts of the
northeastern shore.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 17 April 2026 Today Tonight and Saturday At 10:30 a.m. EDT today departing trough located on a line
northeast-southwest over New England.

At 10:30 a.m. EDT today ridge located on a line north-south over
southern Ontario.
By 10:30 a.m. EDT Saturday ridge located on a line
northeast-southwest over New England.

At 10:30 a.m. EDT today low 998 mb located over western Iowa.
By 10:30 a.m. EDT Saturday low 990 mb located over James Bay.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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