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L'Isle-aux-Coudres to Tadoussac

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 12 July 2026

Tonight and Monday.

Strong wind warning in effect.

Wind light increasing to southwest 15 to 20 knots early this evening and to southwest 20 to 30 Monday morning. Wind diminishing to southwest 15 Monday evening.

Scattered showers Monday afternoon and evening with a risk of thunderstorms.

Waves

Issued 03:00 PM EDT 12 July 2026
Tonight and Monday. Seas 1 metre or less.

Extended Forecast

Issued 06:00 PM EDT 12 July 2026
Tuesday Wind southwest 15 knots increasing to southwest 15 to 25 in the morning.
Wednesday Wind westerly 15 to 20 knots.
Thursday Wind west 15 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 3:00 PM EDT 12 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 PM EDT 12 July 2026 Tonight and Monday At 3:00 p.m. EDT today departing ridge located on a line north-south
over southern Quebec.

At 3:00 p.m. EDT today trough located on a line north-south over
northern Ontario.
By 8:00 p.m. EDT Monday trough located from Montréal to Labrador.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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