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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:10 AM EST 18 February 2026

Today Tonight and Thursday.

Wind variable 10 knots increasing to northeast 15 early this morning and to northeast 20 late this morning. Wind diminishing to northeast 15 overnight then veering to east 20 Thursday evening.

Snow today and tonight with a risk of freezing rain. Periods of drizzle Thursday evening. Fog patches dissipating this morning. Visibility 1 mile or less in fog patches and in snow.

Waves

Issued 03:00 AM EST 18 February 2026
Today Tonight and Thursday. Over open water waves 0.5 metres or less building to 0.5 to 1 this morning then subsiding to 0.5 Thursday morning. Waves building to 1 Thursday 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 Huron marine weather areas Wiarton Airport Western Islands Cove Island Goderich Lake Simcoe Regional Airport Vineland Station Parry Sound Harbour Sarnia Chris Hadfield Airport Tobermory Muskoka Airport Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Lagoon City Southeast Shoal Burlington Lift Bridge Welland-Pelham Windsor Airport Port Colborne Erieau Peterborough Municipal Airport CFB Trenton Toronto City Centre Airport Point Petre Oshawa Executive Airport Hamilton Munro Int'l Airport Point Pelee Cobourg Port Colborne - 45142 North Channel - 45154 Ajax - 45159 Lake Nipissing - 45152 Sault Ste. Marie Airport Killarney Lake Simcoe - 45151 Greater Sudbury Airport South Lake Huron - 45149 Lake St Clair - 45147 North Bay Airport South Georgian Bay - 45143 Gore Bay-Manitoulin Airport Grimsby - 45139 Georgian Bay - 45137 Great Duck Island Collingwood Kingston Airport Grenadier Island Brockville Prince Edward Point - 45135 Port Stanley - 45132
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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 Huron Area

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Marine Weather for Canada

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