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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 08 August 2026

Tonight and Sunday.

Wind light becoming southwest 10 to 15 knots early this evening. Wind west 10 to 15 Sunday.

Scattered showers ending Sunday morning. Risk of thunderstorms late this afternoon and this evening. Visibility as low as 1 mile in showers.

Extended Forecast

Issued 06:00 PM EDT 08 August 2026
Monday Wind light.
Tuesday Wind west 10 to 20 knots.
Wednesday Wind southwest 10 to 15 knots.

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Map of St. Lawrence - St. Lawrence River marine weather areas Grand Manan New Carlisle Pointe-au-Père Fundy Park (Alma) Port Menier Miramichi Île Bicquette Charlo Cap-Chat Bathurst Airport CFB Bagotville Jonquière Mistook Normandin Roberval Airport Île-d'Orléans - Quai de St-Jean Deschambault North Bay Airport Beauport L'Isle-aux-Grues Bas Caraquet Lake Nipissing - 45152 Pointe-des-Monts L'Assomption Baie-Comeau Airport Saint-Anicet Cap-Rouge Sainte-Anne-de-Bellevue Lac Memphrémagog Montréal Metropolitain Airport Île Rouge Montréal-Trudeau Int'l Airport Lac Saint-Pierre Trois-Rivières Airport Pointe de l'Islet Pointe Claveau Sept-Îles Airport Kouchibouguac 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 La Pocatière Miscou Island Mont-Joli Airport
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buoy Buoy
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 8 August 2026 Tonight and Sunday At 3:00 p.m. EDT today trough located on a line north-south over
western Quebec.
By 8:00 p.m. EDT Sunday trough located from Hudson Bay to New
Brunswick.

At 3:00 p.m. EDT today ridge located on a line north-south over
the Midwestern states.
By 8:00 p.m. EDT Sunday ridge located on a line north-south over
Ontario.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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