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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 22 January 2026

Today Tonight and Friday.

Gale warning in effect.

Wind west 30 knots increasing to west 35 near noon then diminishing to west 30 early this evening. Wind veering to northwest 25 Friday evening.

Scattered flurries.

Freezing spray warning in effect.

Freezing spray beginning this evening and ending Friday evening.

Waves

Issued 03:00 AM EST 22 January 2026
Today Tonight and Friday. Waves 2 to 3 metres subsiding to 2 near midnight and to 1.5 Friday evening.

Extended Forecast

Issued 03:00 AM EST 22 January 2026
Saturday Wind northwest 20 knots diminishing to light in the afternoon.
Sunday Wind northeast 15 knots increasing to northeast 25.
Monday Wind northeast 25 knots diminishing to northwest 15.

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

Warnings (In effect)

Gale warning in effect

Western Lake Ontario

Issued 03:00 AM EST 22 January 2026

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Freezing spray warning in effect

Western Lake Ontario

Issued 03:00 AM EST 22 January 2026

Moderate or severe freezing spray is occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EST 22 January 2026 Today Tonight and Friday At 3:00 a.m. EST today low 1001 mb located over northeastern
Ontario.
By 3:00 a.m. EST Friday departing low 1004 mb located over eastern
Quebec.

At 3:00 a.m. EST today trough located on a line northwest-southeast
over Lake Superior.
By 3:00 a.m. EST Friday trough located on a line east-west over
Lake Nipissing.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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