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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EST 17 February 2026

Today Tonight and Wednesday.

Wind light increasing to northeast 15 knots late overnight and to northeast 25 Wednesday morning.

Rain or freezing rain Wednesday morning and afternoon changing to snow. Visibility 1 mile or less in snow.

Waves

Issued 10:30 AM EST 17 February 2026
Today Tonight and Wednesday. Waves 0.5 metres or less building to 1 early Wednesday morning and to 2 near noon Wednesday. Waves subsiding to 1.5 Wednesday evening.

Extended Forecast

Issued 03:00 AM EST 17 February 2026
Thursday Wind northeast 20 knots.
Friday Wind east 25 knots veering to south 20 late in the day.
Saturday Wind southwest 15 knots.

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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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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 10:30 AM EST 17 February 2026 Today Tonight and Wednesday At 10:30 a.m. EST today departing trough located on a line
northeast-southwest over eastern Ontario.

At 10:30 a.m. EST today ridge located on a line northwest-southeast
over northwestern Ontario.
By 10:30 a.m. EST Wednesday ridge located on a line
northwest-southeast over northeastern Ontario.

By 10:30 a.m. EST Wednesday approaching low 986 mb located over
southern Minnesota.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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