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L'Isle-aux-Coudres to Tadoussac

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 19 July 2026

Today Tonight and Monday.

Strong wind warning in effect.

Wind southwest 10 to 15 knots increasing to northwest 15 to 25 early this morning then diminishing to northwest 10 to 15 this evening. Wind becoming light overnight then becoming southwest 10 to 15 Monday morning.

Showers and fog banks ending early this morning with a risk of thunderstorms.

Waves

Issued 03:00 AM EDT 19 July 2026
Today Tonight and Monday. Seas 1 metre or less.

Extended Forecast

Issued 06:00 AM EDT 19 July 2026
Tuesday Wind southwesterly 15 knots.
Wednesday Wind light increasing to southwest 15 to 25 knots.
Thursday Wind southwest 15 to 25 knots.

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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 - Quai de St-Jean 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

Warnings (In effect)

Strong wind warning in effect

L'Isle-aux-Coudres to Tadoussac

Issued 03:00 AM EDT 19 July 2026

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 19 July 2026 Today Tonight and Monday At 3:00 a.m. EDT today low 993 mb located near Tadoussac.
By 8:00 p.m. EDT Monday low 994 mb located over Labrador Coast.

At 3:00 a.m. EDT today ridge located on a line north-south over
Lake Superior.
By 8:00 p.m. EDT Monday ridge located on a line north-south over
Québec city.

At 8:00 p.m. EDT Monday approaching low 994 mb located over
northern Ontario.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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