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Eastern Lake Ontario

Forecast

Marine Forecast

Issued 06:30 PM EST 17 January 2026

Tonight and Sunday.

Gale warning in effect.

Wind southwest 25 knots increasing to southwest 35 this evening then diminishing to southwest 25 Sunday morning.

Scattered showers or scattered flurries this evening. Scattered flurries Sunday. Visibility 1 mile or less in flurries.

Freezing spray warning in effect.

Freezing spray beginning early Sunday morning and ending early Sunday evening. Risk of freezing spray Sunday late in the day.

Waves

Issued 06:30 PM EST 17 January 2026
Tonight and Sunday. Waves 1 metre building to 2 this evening and to 3 near midnight. Waves subsiding to 2 near noon Sunday and to 1 to 1.5 Sunday evening.

Extended Forecast

Issued 06:30 PM EST 17 January 2026
Monday Wind southwest 20 knots increasing to southwest 35 in the afternoon.
Tuesday Wind southwest 25 knots increasing to southwest 30.
Wednesday Wind southwest 25 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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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

Warnings (In effect)

Gale warning in effect

Eastern Lake Ontario

Issued 6:30 PM EST 17 January 2026

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Freezing spray warning in effect

Eastern Lake Ontario

Issued 6:30 PM EST 17 January 2026

Moderate or severe freezing spray is 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 EST 17 January 2026 Tonight and Sunday At 6:30 p.m. EST tonight departing ridge located on a line
northwest-southeast over New Brunswick.

At 6:30 p.m. EST tonight low 1007 mb located over eastern Quebec.
By 6:30 p.m. EST Sunday departing low 1011 mb located over
southeastern Quebec.

At 6:30 p.m. EST tonight ridge located on a line northeast-southwest
over Manitoba.
By 6:30 p.m. EST Sunday ridge located on a line north-south over
Hudson Bay.

Great Lakes - Lake Erie and Lake Ontario Area

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