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L'Isle-aux-Coudres to Tadoussac

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Forecast

Marine Forecast

Issued 03:00 AM EST 07 December 2025

Today Tonight and Monday.

Wind northwest 15 to 25 knots diminishing to light early this morning then increasing to northwest 10 to 15 near midnight. Wind increasing to southwest 15 to 25 near noon Monday.

Scattered flurries tonight and Monday morning.

Temperatures minus 7 falling to minus 14 Monday afternoon.

Waves

Issued 03:00 AM EST 07 December 2025
Today Tonight and Monday. Seas 1 metre.

Extended Forecast

Issued 06:00 PM EST 06 December 2025
Monday Wind northwesterly 10 to 15 knots increasing to southwest 15 to 25 in the morning.
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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buoy Buoy
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 AM EST 7 December 2025 Today Tonight and Monday At 3:00 a.m. EST today trough located on a line north-south over
Sept-Îles.
By 10:00 p.m. EST tonight dissipating trough located on a line
northwest-southeast over the Strait of Belle Isle.

At 3:00 a.m. EST today ridge located from Lake Huron to Lake
Saint-Jean.
By 7:00 p.m. EST Monday ridge located from Lake Ontario to Québec
city.

St. Lawrence - St. Lawrence River Area

Another Region

Marine Weather for Canada

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