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Cornwall to Montréal

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Marine Forecast

Issued 03:00 PM EST 15 December 2025

Tonight and Tuesday.

Wind west 15 to 20 knots diminishing to light this evening then becoming southwest 10 to 15 Tuesday morning.

Scattered flurries tonight.

Low tonight minus 7. High Tuesday zero.

Extended Forecast

Issued 06:00 PM EST 15 December 2025
Wednesday Wind southwest 15 to 25 knots.
Thursday Wind light increasing to south 15 to 25 knots.
Friday Wind south 15 to 25 knots veering to southwest 20 to 30.

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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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 PM EST 15 December 2025 Tonight and Tuesday At 3:00 p.m. EST today departing low 955 mb located over
Newfoundland.

At 3:00 p.m. EST today ridge located from Lake Ontario to Ungava
Bay.
By 7:00 p.m. EST Tuesday ridge located from Nova Scotia to Labrador.

At 7:00 p.m. EST Tuesday approaching trough located on a line
northeast-southwest over northern Ontario.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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