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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 06:48 PM EDT 13 April 2026

Tonight and Tuesday.

Wind southwest 15 to 25 knots becoming west 15 late this evening then diminishing to light late overnight. Wind becoming northeast 10 to 15 Tuesday morning.

Periods of rain this evening. Rain Tuesday afternoon and evening. Fog forming early this evening and dissipating Tuesday morning.

Extended Forecast

Issued 06:00 PM EDT 13 April 2026
Wednesday Wind light.
Thursday Wind northeast 15 knots.
Friday Wind light becoming north 15 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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 PM EDT 13 April 2026 Tonight and Tuesday At 3:00 p.m. EDT today trough located on a line northeast-southwest
over Lake Huron.
By 8:00 a.m. EDT Tuesday departing trough located off Newfoundland.

At 3:00 a.m. EDT Tuesday ridge located on a line north-south over
James Bay.
By 8:00 p.m. EDT Tuesday ridge located on a line northwest-southeast
over Pointe-des-Monts.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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