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L'Isle-aux-Coudres to Tadoussac

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 07 March 2026

Today Tonight and Sunday.

Gale warning in effect.

Wind southerly 10 to 15 knots increasing to southwest 15 to 25 this morning then diminishing to light after midnight. Wind increasing to northeast 10 to 20 Sunday morning then diminishing to light near noon Sunday. Wind increasing to southwest 25 to 35 Sunday evening.

Freezing rain beginning early this morning changing to periods of rain early this morning then to periods of snow Sunday morning and ending near noon Sunday. Visibility 1 mile or less in snow.

Temperatures minus 4 rising to plus 7 this evening then falling to plus 2 Sunday morning.

Waves

Issued 03:00 AM EST 07 March 2026
Today Tonight and Sunday. Over open water seas 1 metre or less building to 1 to 2 this afternoon then subsiding to 1 or less Sunday morning.

Extended Forecast

Issued 06:00 AM EST 07 March 2026
Monday Wind southwest 20 to 30 knots.
Tuesday Wind southwest 15 to 25 knots diminishing to southwest 10 to 15.
Wednesday Wind northeast 10 to 15 knots increasing to northeast 15 to 25.

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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 EST 07 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 EST 7 March 2026 Today Tonight and Sunday At 3:00 a.m. EST today low 1001 mb located west of Lake Michigan.
By 8:00 p.m. EDT Sunday departing low 997 mb located near
Natashquan.

At 3:00 a.m. EST today ridge located on a line northeast-southwest
over the Midwestern states.
By 8:00 p.m. EDT Sunday ridge located on a line northeast-southwest
over Lake Ontario.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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