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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 14 July 2026

Today Tonight and Wednesday.

Strong wind warning in effect.

Wind southwest 20 knots diminishing to west 15 near midnight and to light early Wednesday morning. Wind becoming northwest 10 Wednesday evening.

Waves

Issued 10:30 AM EDT 14 July 2026
Today Tonight and Wednesday. Waves 1 to 1.5 metres subsiding to 0.5 to 1 late overnight and to 0.5 or less Wednesday morning.

Extended Forecast

Issued 03:00 AM EDT 14 July 2026
Thursday Wind light becoming west 15 knots in the afternoon.
Friday Wind light.
Saturday Wind light.

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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 17 May 2026 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Western Lake Ontario

Issued 10:30 AM EDT 14 July 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.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 14 July 2026 Today Tonight and Wednesday At 10:30 a.m. EDT today quasi-stationary ridge located on a line
east-west over Ohio.

At 10:30 a.m. EDT today trough located over northern Ontario.
By 10:30 a.m. EDT Wednesday trough located on a line
northeast-southwest over the Gulf of St. Lawrence.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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