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Western Lake Ontario

Forecast

Marine Forecast

Issued 03:00 AM EST 13 January 2026

Today Tonight and Wednesday.

Wind southwest 20 knots backing to south 15 early this morning then increasing to southwest 25 this afternoon. Wind increasing to southwest 30 this evening then diminishing to southwest 20 overnight. Wind diminishing to southwest 15 Wednesday morning and to northwest 10 Wednesday afternoon. Wind increasing to northwest 15 Wednesday evening.

Scattered showers this afternoon and tonight. Scattered flurries Wednesday late in the day.

Waves

Issued 03:00 AM EST 13 January 2026
Today Tonight and Wednesday. Waves 1.5 to 2 metres.

Extended Forecast

Issued 03:00 AM EST 13 January 2026
Thursday Wind northwest 20 knots.
Friday Wind light increasing to southwest 20 knots.
Saturday Wind southwest 20 knots.

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Weather Conditions

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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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land station Land Station
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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EST 13 January 2026 Today Tonight and Wednesday At 3:00 a.m. EST today departing ridge located over the Ontario -
Quebec border.

At 3:00 a.m. EST today low 991 mb located over the Ontario -
Manitoba border.
By 3:00 a.m. EST Wednesday low 989 mb located over western Quebec.

By 3:00 a.m. EST Wednesday ridge located on a line north-south
over Manitoba.

Great Lakes - Lake Erie and Lake Ontario Area

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