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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 12 January 2026

Tonight and Tuesday.

Wind southwest 25 knots diminishing to south 15 Tuesday morning then increasing to southwest 25 Tuesday afternoon. Wind increasing to southwest 30 Tuesday evening.

Scattered flurries this evening. Scattered showers Tuesday late in the day.

Waves

Issued 06:30 PM EST 12 January 2026
Tonight and Tuesday. Waves 1.5 metres subsiding to 1 late overnight then building to 2 Tuesday evening.

Extended Forecast

Issued 06:30 PM EST 12 January 2026
Wednesday Wind southwest 30 knots diminishing to southwest 20 in the morning then veering to northwest 15 late in the day.
Thursday Wind northwest 20 knots.
Friday Wind light increasing to southwest 20 knots.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Harrow AAFC Burlington Lift Bridge Oshawa Executive Airport Point Pelee Peterborough Municipal Airport Point Petre Hamilton Munro Int'l Airport Erieau Cobourg Toronto City Centre Airport Port Colborne CFB Trenton South Lake Huron - 45149 Windsor Airport Great Duck Island Gore Bay-Manitoulin Airport North Bay Airport Greater Sudbury Airport Killarney Sault Ste. Marie Airport Ajax - 45159 North Channel - 45154 Lake Nipissing - 45152 Lake Simcoe - 45151 Welland-Pelham Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Vineland Station Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Cove Island Goderich Sarnia Chris Hadfield Airport Western Islands Tobermory Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal
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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 6:30 PM EST 12 January 2026 Tonight and Tuesday At 6:30 p.m. EST tonight ridge located on a line north-south over
Lake Nipigon.
By 6:30 p.m. EST Tuesday ridge located on a line north-south over
Nova Scotia.

At 6:30 p.m. EST tonight low 993 mb located over northern Manitoba.
By 6:30 p.m. EST Tuesday low 988 mb located over northeastern
Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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