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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 25 October 2026

Tonight and Monday.

Wind light increasing to southwest 15 knots late overnight then veering to northwest 10 to 20 Monday afternoon.

Scattered showers Monday.

Extended Forecast

Issued 06:00 PM EDT 25 October 2026
Tuesday Wind northwest 10 to 15 knots diminishing to light in the afternoon.
Wednesday Wind light.
Thursday Wind light becoming southwest 10 to 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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land station Land Station
Ice Conditions

There is no ice forecast issued for this area.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 PM EDT 25 October 2026 Tonight and Monday At 3:00 p.m. EDT today departing ridge located on a line
northeast-southwest over Newfoundland.

At 3:00 p.m. EDT today trough located from Ungava Bay to Lake
Michigan.
By 8:00 p.m. EDT Monday trough located on a line northeast-southwest
over Nova Scotia.

At 8:00 p.m. EDT tonight ridge located on a line east-west over
Lake Superior.
By 8:00 p.m. EDT Monday ridge located on a line east-west over
southwestern Quebec.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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