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L'Isle-aux-Coudres to Tadoussac

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EST 05 December 2025

Tonight and Saturday.

Gale warning in effect.

Wind southwest 25 to 35 knots diminishing to southwest 15 to 25 early this evening and to southwest 10 to 15 near midnight. Wind increasing to southwest 15 to 25 Saturday evening.

Scattered flurries Saturday.

Risk of freezing spray late this afternoon and this evening.

Low tonight minus 8. High Saturday minus 1.

Waves

Issued 03:00 PM EST 05 December 2025
Tonight and Saturday. Seas 1 to 2 metres subsiding to 1 this evening.

Extended Forecast

Issued 06:00 PM EST 05 December 2025
Sunday Wind northwest 10 to 15 knots becoming light in the morning.
Monday Wind northwesterly 10 to 15 knots backing to southwest 15 to 20 late in the day.
Tuesday Wind southwest 20 to 30 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 3:00 PM EST 05 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 5 December 2025 Tonight and Saturday At 3:00 p.m. EST today departing low 967 mb located east of
Newfoundland.

At 3:00 p.m. EST today ridge located on a line north-south over
Rimouski.
By 7:00 p.m. EST Saturday ridge located on a line north-south over
the Quebec Lower North Shore.

At 3:00 p.m. EST today trough located on a line northeast-southwest
over northern Ontario.
By 7:00 p.m. EST Saturday trough located on a line
northeast-southwest over Lake Saint-Jean.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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