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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 05 June 2026

Today Tonight and Saturday.

Strong wind warning in effect.

Wind light becoming southwest 15 knots this afternoon then diminishing to southwest 10 this evening. Wind increasing to southwest 15 late overnight and to southwest 20 Saturday morning. Wind diminishing to west 15 Saturday afternoon and to west 10 Saturday evening.

Scattered showers overnight and Saturday with a risk of thunderstorms. Fog patches forming overnight.

Waves

Issued 10:30 AM EDT 05 June 2026
Today Tonight and Saturday. Waves 0.5 metres or less building to 0.5 to 1 early this evening.

Extended Forecast

Issued 03:00 AM EDT 05 June 2026
Sunday Wind west 15 knots diminishing to light in the afternoon.
Monday Wind east 15 knots.
Tuesday Wind southeast 15 knots diminishing to 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 05 June 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 5 June 2026 Tonight and Saturday At 6:30 p.m. EDT tonight departing ridge located on a line
northwest-southeast over eastern Quebec.

At 6:30 p.m. EDT tonight low 1005 mb located over northwestern
Ontario.
By 6:30 p.m. EDT Saturday low 1000 mb located over central Quebec.

At 6:30 p.m. EDT tonight ridge located on a line north-south
over Manitoba.
By 6:30 p.m. EDT Saturday ridge located on a line north-south over
northern Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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