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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 20 July 2025

Today Tonight and Monday.

Wind light becoming southwest 10 to 15 knots early this morning then veering to northwest 10 to 15 this afternoon. Wind northwest 10 to 15 tonight. Wind north 10 to 15 Monday.

Scattered showers ending near midnight.

Extended Forecast

Issued 06:00 AM EDT 20 July 2025
Tuesday Wind light.
Wednesday Wind light.
Thursday Wind southwest 15 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 Saint-Hubert 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 EDT 20 July 2025 Today Tonight and Monday At 3:00 a.m. EDT today trough located on a line northeast-southwest
over northwestern Quebec.
By 8:00 p.m. EDT Monday trough located on a line northeast-southwest
over Newfoundland.

At 3:00 a.m. EDT today high located on a line north-south over
Manitoba.
By 8:00 p.m. EDT Monday high located on a line north-south over
Lake Ontario.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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