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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 18 November 2025

Today Tonight and Wednesday.

Wind west 15 to 25 knots diminishing to west 10 to 15 late this afternoon then becoming light near midnight. Wind becoming southwest 10 to 15 near noon Wednesday.

High today plus 1. Low tonight minus 5. High Wednesday plus 1.

Extended Forecast

Issued 06:00 AM EST 18 November 2025
Thursday Wind light.
Friday Wind light increasing to west 15 to 25 knots late in the day.
Saturday Wind west 15 to 25 knots becoming west 15.

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Map of St. Lawrence - St. Lawrence River marine weather areas Cap-Chat Mont-Joli Airport Bathurst Airport Île Bicquette Charlo Port Menier Miramichi Pointe-au-Père Fundy Park (Alma) New Carlisle Grand Manan Bas Caraquet CFB Bagotville Jonquière Mistook Normandin Roberval Airport Deschambault Beauport North Bay Airport Trois-Rivières Airport Lake Nipissing - 45152 Kouchibouguac Baie-Comeau Airport Île d'Orléans Saint-Anicet Sainte-Anne-de-Bellevue Cap-Rouge Lac Memphrémagog Montréal Metropolitain Airport Montréal-Trudeau Int'l Airport Île Rouge Lac Saint-Pierre L'Isle-aux-Grues L'Assomption Pointe de l'Islet Pointe Claveau Sept-Îles Airport Pointe-des-Monts North Cape Pointe-Noire Yarmouth Airport Cap-d'Espoir Brier Island Rivière-la-Madeleine St. Stephen Gaspé Airport Saint John Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport Miscou Island Kouchibouguac La Pocatière
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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 EST 18 November 2025 Today Tonight and Wednesday At 3:00 a.m. EST today low 973 mb located over northern Labrador.
By 7:00 p.m. EST Wednesday low 989 mb located east of Ungava Bay.

At 3:00 a.m. EST today high 1024 mb located over the Great Lakes.
By 7:00 p.m. EST Wednesday high 1027 mb located near Cornwall.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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