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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 07 October 2026

Today Tonight and Thursday.

Strong wind warning in effect.

Wind southwest 20 knots diminishing to west 15 this evening. Wind west 15 Thursday.

Scattered showers this morning. Scattered showers tonight and Thursday morning with a risk of thunderstorms. Scattered showers Thursday evening.

Waves

Issued 10:30 AM EDT 07 October 2026
Today Tonight and Thursday. Waves 1 to 1.5 metres subsiding to 0.5 to 1 near midnight.

Extended Forecast

Issued 03:00 AM EDT 07 October 2026
Friday Wind west 15 knots.
Saturday Wind northwest 15 knots diminishing to light.
Sunday Wind southwest 15 knots.

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Map of Great Lakes - Lake Huron marine weather areas Erieau CFB Trenton Muskoka Airport Parry Sound Harbour Toronto City Centre Airport Lake Simcoe Regional Airport Wiarton Airport Point Petre Lagoon City Western Islands Cobourg Port Colborne Windsor Airport Point Pelee Welland-Pelham Vineland Station Burlington Lift Bridge Southeast Shoal St. Catharines / Niagara District Airport Goderich Port Weller Long Point Harrow AAFC Hamilton Munro Int'l Airport Tobermory Sarnia Chris Hadfield Airport Oshawa Executive Airport Collingwood Port Stanley - 45132 Prince Edward Point - 45135 Georgian Bay - 45137 Grimsby - 45139 Port Colborne - 45142 South Georgian Bay - 45143 Lake St Clair - 45147 South Lake Huron - 45149 Lake Simcoe - 45151 Lake Nipissing - 45152 North Channel - 45154 Ajax - 45159 Sault Ste. Marie Airport Killarney Greater Sudbury Airport North Bay Airport Gore Bay-Manitoulin Airport Peterborough Municipal Airport Brockville Grenadier Island Kingston Airport
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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 07 October 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 7 October 2026 Today Tonight and Thursday At 10:30 a.m. EDT today low 992 mb located over James Bay.
By 10:30 a.m. EDT Thursday low 996 mb located east of James Bay.

At 10:30 a.m. EDT today cold front from low located on a line
northeast-southwest over Lake Huron.
By 10:30 a.m. EDT Thursday cold front from low located near the
East Coast of the U.S.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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