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L'Isle-aux-Coudres to Tadoussac

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EST 15 December 2025

Tonight and Tuesday.

Gale warning in effect.

Wind southwest 15 to 20 knots increasing to southwest 20 to 30 Tuesday morning and to southwest 30 to 40 Tuesday afternoon.

Over open water risk of freezing spray Tuesday afternoon and evening.

Low tonight minus 9. High Tuesday minus 3.

Waves

Issued 03:00 PM EST 15 December 2025
Tonight and Tuesday. Over open water seas 1 metre or less building to 1 to 2 near noon Tuesday.

Extended Forecast

Issued 06:00 AM EST 15 December 2025
Wednesday Wind southwest 20 to 30 knots.
Thursday Wind light becoming northeast 15 knots.
Friday Wind southwest 15 knots increasing to west 15 to 25.

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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 3:00 PM EST 15 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 15 December 2025 Tonight and Tuesday At 3:00 p.m. EST today departing low 955 mb located over
Newfoundland.

At 3:00 p.m. EST today ridge located from Lake Ontario to Ungava
Bay.
By 7:00 p.m. EST Tuesday ridge located from Nova Scotia to Labrador.

At 7:00 p.m. EST Tuesday approaching trough located on a line
northeast-southwest over northern Ontario.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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