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L'Isle-aux-Coudres to Tadoussac

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 07 August 2026

Tonight and Saturday.

Wind southwest 10 to 15 knots diminishing to light early this evening then becoming northeast 10 to 15 late Saturday morning. Wind becoming southwest 10 to 15 Saturday evening.

Scattered showers Saturday evening with a risk of thunderstorms. Fog banks forming near midnight and dissipating early Saturday morning. Visibility 1 mile or less in fog banks and as low as 1 mile in showers.

Waves

Issued 03:00 PM EDT 07 August 2026
Tonight and Saturday. Seas 1 metre or less.

Extended Forecast

Issued 06:00 PM EDT 07 August 2026
Sunday Wind southwest 15 to 20 knots.
Monday Wind southwest 15 to 20 knots.
Tuesday Wind west 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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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 7 August 2026 Tonight and Saturday At 3:00 p.m. EDT today flat low located from Labrador to Lake
Ontario.
By 8:00 p.m. EDT Saturday flat low located over the Gulf of
St. Lawrence.

At 8:00 a.m. EDT Saturday trough located on a line
northeast-southwest over James Bay.
By 8:00 p.m. EDT Saturday trough located on a line north-south
over western Lake Saint-Jean.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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