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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 14 April 2026

Today Tonight and Wednesday.

Wind light increasing to northeast 15 to 25 knots late this morning then diminishing to light this evening. Wind light Wednesday.

Rain beginning near noon changing to periods of drizzle near midnight then to scattered showers near noon Wednesday and ending Wednesday afternoon. Fog forming overnight and dissipating Wednesday morning.

Extended Forecast

Issued 06:00 AM EDT 14 April 2026
Thursday Wind light.
Friday Wind light becoming northeast 15 knots.
Saturday Wind northeast 15 knots veering to southeast 15.

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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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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 AM EDT 14 April 2026 Today Tonight and Wednesday At 3:00 a.m. EDT today intensifying ridge from 1021 mb high located
from James Bay to Lake Ontario.
By 8:00 p.m. EDT Wednesday departing ridge located from the Quebec
Lower North Shore to Tadoussac.

At 3:00 a.m. EDT today low 1002 mb located over the Midwestern
states.
By 8:00 p.m. EDT tonight departing low 1008 mb located near
Montréal.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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