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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 18 February 2026

Today Tonight and Thursday.

Wind northeast 10 knots increasing to northeast 20 early this morning and to northeast 25 this morning. Wind northeast 20 tonight and Thursday.

Rain or freezing rain beginning early this morning changing to snow or freezing rain this evening and ending overnight. Periods of drizzle Thursday evening. Fog patches dissipating early this morning.

Waves

Issued 03:00 AM EST 18 February 2026
Today Tonight and Thursday. Waves 0.5 metres or less building to 1 early this morning and to 2 late this morning. Waves subsiding to 1.5 this evening.

Extended Forecast

Issued 03:00 AM EST 18 February 2026
Friday Wind east 20 knots increasing to east 25 in the morning then diminishing to southwest 20 late in the day.
Saturday Wind southwest 15 knots.
Sunday Wind northeast 15 knots backing to north 20 late in the day.

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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 3:00 AM EST 18 February 2026 Today Tonight and Thursday At 3:00 a.m. EST today ridge located on a line northwest-southeast
over eastern Lake Ontario.
By 3:00 a.m. EST Thursday ridge located on a line
northwest-southeast over southern Quebec.

At 3:00 a.m. EST today low 985 mb located over western Minnesota.
By 3:00 a.m. EST Thursday low 1001 mb located over northwestern
Wisconsin.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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