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L'Isle-aux-Coudres to Tadoussac

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Forecast

Marine Forecast

Issued 03:00 PM EST 06 December 2025

Tonight and Sunday.

Wind southerly 15 knots increasing to southwest 15 to 25 late this afternoon then veering to northwest 15 to 25 near midnight. Wind diminishing to light early Sunday morning.

Scattered flurries ending near midnight. Scattered flurries Sunday evening.

Temperatures minus 4 falling to minus 12 Sunday morning.

Waves

Issued 03:00 PM EST 06 December 2025
Tonight and Sunday. Seas 1 metre or less.

Extended Forecast

Issued 06:00 AM EST 06 December 2025
Monday Wind northwesterly 10 to 15 knots backing to southwest 15 to 20 in the afternoon.
Tuesday Wind southwest 15 to 25 knots.
Wednesday Wind southwest 15 knots diminishing to light.

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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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land station Land Station
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 PM EST 6 December 2025 Tonight and Sunday At 3:00 p.m. EST today trough located on a line northeast-southwest
over southwestern Quebec.
By 7:00 p.m. EST Sunday trough located on a line northeast-southwest
over the Gulf of St. Lawrence.

At 3:00 p.m. EST today ridge located on a line east-west over
Lake Superior.
By 7:00 p.m. EST Sunday ridge located from Lake Superior to Lake
Saint-Jean.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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