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L'Isle-aux-Coudres to Tadoussac

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EST 08 December 2025

Tonight and Tuesday.

Gale warning in effect.

Wind southwest 20 to 30 knots becoming southwest 25 to 35 late overnight then diminishing to southwest 15 to 25 Tuesday evening.

Risk of freezing spray Tuesday.

Temperatures near minus 8.

Waves

Issued 03:00 PM EST 08 December 2025
Tonight and Tuesday. Seas 1 metre building to 1 to 2 early Tuesday morning then subsiding to 1 or less Tuesday evening.

Extended Forecast

Issued 06:00 PM EST 08 December 2025
Wednesday Wind southwest 15 knots diminishing to light in the morning then increasing to northeast 20 to 30 late in the day.
Thursday Wind northeast 15 to 25 knots backing to northwesterly 15 to 25 late in the day.
Friday Wind westerly 15 to 25 knots.

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Map of St. Lawrence - St. Lawrence River marine weather areas Cap-Chat Mont-Joli Airport Bathurst Airport Île Bicquette Charlo Port Menier Miramichi Pointe-au-Père Fundy Park (Alma) New Carlisle Grand Manan Bas Caraquet CFB Bagotville Jonquière Mistook Normandin Roberval Airport Deschambault Beauport North Bay Airport Trois-Rivières Airport Lake Nipissing - 45152 Kouchibouguac Baie-Comeau Airport Île d'Orléans Saint-Anicet Sainte-Anne-de-Bellevue Cap-Rouge Lac Memphrémagog Montréal Metropolitain Airport Montréal-Trudeau Int'l Airport Île Rouge Lac Saint-Pierre L'Isle-aux-Grues L'Assomption Pointe de l'Islet Pointe Claveau Sept-Îles Airport Pointe-des-Monts 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 Miscou Island Kouchibouguac La Pocatière
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buoy Buoy
land station Land Station
Ice Conditions

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Gale warning in effect

L'Isle-aux-Coudres to Tadoussac

Issued 9:10 PM EST 08 December 2025

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 PM EST 8 December 2025 Tonight and Tuesday At 3:00 p.m. EST today departing trough located on a line
north-south over Newfoundland.

At 3:00 p.m. EST today ridge located from Lake Huron to Lake
Saint-Jean.
By 7:00 p.m. EST Tuesday ridge located on a line northwest-southeast
over Rimouski.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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