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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 07 August 2026

Tonight and Saturday.

Wind light becoming southwest 10 knots early Saturday morning then veering to west 10 Saturday evening.

Scattered showers with a risk of thunderstorms. Fog patches forming this evening and dissipating Saturday morning.

Waves

Issued 06:30 PM EDT 07 August 2026
Tonight and Saturday. Waves less than 0.5 metres building to 0.5 or less Saturday morning.

Extended Forecast

Issued 06:30 PM EDT 07 August 2026
Sunday Wind west 15 knots diminishing to light late in the day.
Monday Wind light becoming southwest 15 knots.
Tuesday Wind northwest 15 knots diminishing to light late in the day.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Harrow AAFC Hamilton Munro Int'l Airport CFB Trenton Erieau Toronto City Centre Airport Point Pelee Peterborough Municipal Airport Burlington Lift Bridge Point Petre Cobourg Oshawa Executive Airport South Lake Huron - 45149 Port Colborne Brockville 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 Windsor Airport Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Welland-Pelham Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Western Islands Sarnia Chris Hadfield Airport Vineland Station Southeast Shoal St. Catharines / Niagara District Airport Goderich Port Weller Long Point Tobermory
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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 17 May 2026 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 7 August 2026 Tonight and Saturday At 6:30 p.m. EDT tonight ridge located on a line northeast-southwest
over Lake Ontario.
By 6:30 p.m. EDT Saturday ridge located from Iowa to North Carolina.

At 6:30 p.m. EDT tonight cold front located on a line
northeast-southwest over Lake Superior.
By 6:30 p.m. EDT Saturday cold front located on a line
northeast-southwest over Lake Simcoe.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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