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Cornwall to Montréal

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Forecast

Marine Forecast

Issued 03:00 AM EDT 14 August 2026

Today Tonight and Saturday.

Wind light becoming northwest 10 to 15 knots this morning then becoming light this evening. Wind light Saturday.

Mist overnight. Visibility as low as 1 mile in mist.

Extended Forecast

Issued 06:00 PM EDT 13 August 2026
Saturday Wind light.
Sunday Wind light.
Monday Wind light becoming west 10 to 15 knots.

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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

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 August 2026 Today Tonight and Saturday At 3:00 a.m. EDT today low 1005 mb located over the Gulf of
St. Lawrence.
By 3:00 a.m. EDT Saturday departing low 1003 mb located off
Newfoundland.

At 3:00 a.m. EDT today ridge located on a line northwest-southeast
over Lake Superior.
By 8:00 p.m. EDT Saturday ridge located on a line north-south
over Cornwall.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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