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Southern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 18 April 2026

Today Tonight and Sunday.

Wind south 25 knots veering to southwest 20 near noon then to west 20 this afternoon. Wind veering to northwest 20 this evening then diminishing to northwest 15 late overnight. Wind backing to west 15 Sunday morning then veering to northwest 20 Sunday afternoon.

Showers ending near midnight. Scattered flurries or scattered showers Sunday.

Waves

Issued 10:30 AM EDT 18 April 2026
Today Tonight and Sunday. Waves 1.5 metres subsiding to 0.5 to 1 early Sunday morning then building to 1 to 1.5 Sunday evening.

Extended Forecast

Issued 03:00 AM EDT 18 April 2026
Monday Wind northwest 20 knots backing to southwest 15 late in the day.
Tuesday Wind south 20 knots.
Wednesday Wind northwest 15 knots diminishing to light.

Ice Forecast*

Issued 12:00 PM EDT 18 April 2026 Today Tonight and Sunday Open water except 2 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 18 April 2026 Today Tonight and Sunday

Ice Coverage

Open water except 2 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 18 April 2026 Today Tonight and Sunday At 10:30 a.m. EDT today low 986 mb located over James Bay.
By 10:30 a.m. EDT Sunday low 980 mb located over eastern Hudson Bay.

At 10:30 a.m. EDT today cold front located on a line north-south
over western Lake Huron.
By 10:30 a.m. EDT Sunday departing cold front located on a line
northeast-southwest over eastern Quebec.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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