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Cornwall to Montréal

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Forecast

Marine Forecast

Issued 03:00 AM EDT 15 August 2026

Today Tonight and Sunday.

Wind light today tonight and Sunday.

Showers Sunday evening. Mist dissipating early this morning. Mist overnight. Visibility as low as 1 mile in mist and in showers.

Extended Forecast

Issued 06:00 AM EDT 15 August 2026
Monday Wind light becoming southwest 10 to 15 knots in the morning.
Tuesday Wind light becoming southwest 10 to 15 knots late in the day.
Wednesday Wind light.

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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 AM EDT 15 August 2026 Today Tonight and Sunday At 3:00 a.m. EDT today ridge located on a line northwest-southeast
over Cornwall.
By 8:00 p.m. EDT Sunday ridge located on a line northeast-southwest
over Sable Island.

At 8:00 p.m. EDT Sunday approaching trough located from James Bay
to Lake Erie.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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