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L'Isle-aux-Coudres to Tadoussac

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 09 March 2026

Today Tonight and Tuesday.

Gale warning in effect.

Wind southwest 25 to 35 knots diminishing to southwest 15 to 25 overnight and to light Tuesday morning. Wind increasing to northeast 15 near noon Tuesday and to northeast 15 to 25 Tuesday evening.

Snow Tuesday afternoon and evening. Visibility 1 mile or less in snow.

Temperatures plus 1 rising to plus 6 this afternoon then falling to minus 2 Tuesday evening.

Waves

Issued 03:00 AM EDT 09 March 2026
Today Tonight and Tuesday. Over open water seas 1 to 2 metres subsiding to 1 or less Tuesday morning.

Extended Forecast

Issued 06:00 AM EDT 09 March 2026
Wednesday Wind northeast 25 to 35 knots.
Thursday Wind northeast 25 to 35 knots becoming southwest 20 to 30 late in the day.
Friday Wind southwest 15 to 25 knots.

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Map of St. Lawrence - St. Lawrence River marine weather areas Miramichi North Cape Port Menier Roberval Airport Normandin Mistook Jonquière CFB Bagotville Cap-Chat Île Bicquette Charlo North Bay Airport Yarmouth Airport Brier Island St. Stephen Saint John Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport Miscou Island Kouchibouguac Kouchibouguac Grand Manan Fundy Park (Alma) Bas Caraquet Bathurst Airport Lac Saint-Pierre Pointe-Noire Île d'Orléans Pointe-des-Monts L'Assomption Sept-Îles Airport Pointe Claveau Pointe de l'Islet Trois-Rivières Airport L'Isle-aux-Grues Deschambault Île Rouge Montréal-Trudeau Int'l Airport Montréal Metropolitain Airport Lac Memphrémagog Sainte-Anne-de-Bellevue Cap-Rouge Saint-Anicet Baie-Comeau Airport La Pocatière Pointe-au-Père New Carlisle Mont-Joli Airport Gaspé Airport Lake Nipissing - 45152 Rivière-la-Madeleine Beauport Cap-d'Espoir
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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 03:00 AM EDT 09 March 2026

'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 AM EDT 9 March 2026 Today Tonight and Tuesday At 3:00 a.m. EDT today ridge located on a line north-south over
Anticosti Island.
By 8:00 p.m. EDT tonight departing ridge located on a line
northeast-southwest over Labrador Sea.

At 3:00 a.m. EDT today low 988 mb located northwest of Lake
Superior.
By 8:00 p.m. EDT Tuesday departing low 986 mb located north of
Newfoundland.

At 5:00 p.m. EDT today ridge located on a line northwest-southeast
over the Great Lakes.
By 8:00 p.m. EDT Tuesday ridge located on a line northwest-southeast
over Matane.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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