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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 12 February 2026

Today Tonight and Friday.

Wind northwest 15 knots diminishing to northwest 10 near midnight then increasing to southwest 20 near noon Friday. Wind increasing to southwest 25 Friday evening.

Scattered flurries ending this afternoon. Scattered flurries Friday late in the day.

Waves

Issued 03:00 AM EST 12 February 2026
Today Tonight and Friday. Waves 0.5 to 1 metre subsiding to 0.5 overnight then building to 1.5 Friday afternoon.

Extended Forecast

Issued 03:00 AM EST 12 February 2026
Saturday Wind west 15 knots diminishing to light in the afternoon.
Sunday Wind light.
Monday Wind light.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas CFB Trenton Port Colborne - 45142 Hamilton Munro Int'l Airport Oshawa Executive Airport Port Stanley - 45132 Lake Nipissing - 45152 Point Petre Georgian Bay - 45137 Toronto City Centre Airport Lake Simcoe - 45151 South Georgian Bay - 45143 Prince Edward Point - 45135 Peterborough Municipal Airport South Lake Huron - 45149 Collingwood Lake St Clair - 45147 Grimsby - 45139 Goderich Lagoon City Kingston Airport Muskoka Airport Parry Sound Harbour Grenadier Island Lake Simcoe Regional Airport Wiarton Airport Brockville Western Islands Cove Island Great Duck Island North Channel - 45154 Sarnia Chris Hadfield Airport Gore Bay-Manitoulin Airport Tobermory Harrow AAFC Long Point North Bay Airport Port Weller St. Catharines / Niagara District Airport Greater Sudbury Airport Southeast Shoal Vineland Station Port Colborne Erieau Cobourg Sault Ste. Marie Airport Windsor Airport Welland-Pelham Killarney Ajax - 45159 Point Pelee Burlington Lift Bridge
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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 3:00 AM EST 12 February 2026 Today Tonight and Friday At 3:00 a.m. EST today trough located on a line east-west over
Saskatchewan.
By 3:00 a.m. EST Friday low 1010 mb located south of Hudson Bay.

At 3:00 a.m. EST today high 1027 mb located on a line north-south
over Thunder Bay.
By 3:00 a.m. EST Friday high 1029 mb located on a line
northeast-southwest over Toronto.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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