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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 23 January 2026

Today Tonight and Saturday.

Gale warning in effect.

Wind west 25 knots increasing to west 35 this morning then diminishing to northwest 25 this afternoon. Wind diminishing to north 15 overnight and to north 10 Saturday morning. Wind becoming variable 10 near noon Saturday.

Scattered flurries ending near midnight. Scattered flurries Saturday evening.

Freezing spray warning in effect.

Freezing spray ending near midnight.

Waves

Issued 03:00 AM EST 23 January 2026
Today Tonight and Saturday. Waves 2 metres building to 2 to 3 near noon then subsiding to 2 early this evening. Waves subsiding to 0.5 to 1 near midnight and to 0.5 Saturday morning.

Extended Forecast

Issued 03:00 AM EST 23 January 2026
Sunday Wind east 15 knots increasing to east 25 in the afternoon.
Monday Wind northeast 20 knots backing to northwest 20.
Tuesday Wind southwest 30 knots.

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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 23 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 23 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 23 January 2026 Today Tonight and Saturday At 3:00 a.m. EST today departing low 1004 mb located over northern
Quebec.

At 3:00 a.m. EST today high 1055 mb located over southwestern
Saskatchewan.
By 3:00 a.m. EST Saturday high 1047 mb located over southern
Minnesota.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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