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L'Isle-aux-Coudres to Tadoussac

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 12 May 2026

Today Tonight and Wednesday.

Wind light becoming northeast 15 knots Wednesday evening.

Waves

Issued 03:00 AM EDT 12 May 2026
Today Tonight and Wednesday. Seas 1 metre or less.

Extended Forecast

Issued 06:00 PM EDT 11 May 2026
Wednesday Wind light becoming northeast 10 to 15 knots in the afternoon.
Thursday Wind light.
Friday Wind northeast 15 knots increasing to northeast 20 to 30.

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Map of St. Lawrence - St. Lawrence River marine weather areas Miramichi North Cape Port Menier Roberval Airport Normandin Mistook Jonquière CFB Bagotville Cap-Chat Île Bicquette Charlo North Bay Airport Yarmouth Airport Brier Island St. Stephen Saint John Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport Miscou Island Kouchibouguac Kouchibouguac Grand Manan Fundy Park (Alma) Bas Caraquet Bathurst Airport Lac Saint-Pierre Pointe-Noire Île d'Orléans Pointe-des-Monts L'Assomption Sept-Îles Airport Pointe Claveau Pointe de l'Islet Trois-Rivières Airport L'Isle-aux-Grues Deschambault Île Rouge Montréal-Trudeau Int'l Airport Montréal Metropolitain Airport Lac Memphrémagog Sainte-Anne-de-Bellevue Cap-Rouge Saint-Anicet Baie-Comeau Airport La Pocatière Pointe-au-Père New Carlisle Mont-Joli Airport Gaspé Airport Lake Nipissing - 45152 Rivière-la-Madeleine Beauport Cap-d'Espoir
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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 12 May 2026 Today Tonight and Wednesday At 3:00 a.m. EDT today ridge located on a line north-south over
western Quebec.
By 8:00 p.m. EDT Wednesday ridge located on a line
northwest-southeast over Sept-Îles.

At 8:00 a.m. EDT Wednesday low 1003 mb located over Lake Huron.
By 8:00 p.m. EDT Wednesday low 1004 mb located east of Lake Huron.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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