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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 15 May 2026

Tonight and Saturday.

Strong wind warning in effect.

Wind southwest 15 knots diminishing to southwest 10 near midnight then increasing to southwest 20 near noon Saturday. Wind diminishing to southwest 15 Saturday evening.

Scattered showers Saturday afternoon and evening with a risk of thunderstorms.

Waves

Issued 06:30 PM EDT 15 May 2026
Tonight and Saturday. Waves 0.5 metres or less building to 0.5 to 1 this evening then subsiding to 0.5 or less late overnight. Waves building to 1 to 1.5 Saturday afternoon.

Extended Forecast

Issued 06:30 PM EDT 15 May 2026
Sunday Wind west 15 knots diminishing to light in the morning.
Monday Wind light becoming southwest 15 knots late in the day.
Tuesday Wind southwest 15 knots.

Ice Forecast*

Issued 12:00 PM EDT 15 May 2026 Today Tonight and Saturday Ice free.

*Ice Forecast and Warnings also apply to U.S. waters

 

[ Canadian Ice Service ]

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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 15 May 2026 Today Tonight and Saturday

Ice Coverage

Ice free.

Warnings

Warnings (In effect)

Strong wind warning in effect

Western Lake Ontario

Issued 6:30 PM EDT 15 May 2026

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 15 May 2026 Tonight and Saturday At 6:30 p.m. EDT tonight departing ridge located on a line
northeast-southwest over the St. Lawrence River.

At 6:30 p.m. EDT tonight low 988 mb located over northern Ontario.
By 6:30 p.m. EDT Saturday low 988 mb located over northern Quebec.

By 6:30 p.m. EDT Saturday ridge located from Manitoba to Michigan.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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