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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 12 July 2026

Today Tonight and Monday.

Strong wind warning in effect.

Wind light increasing to southwest 15 to 25 knots Monday morning.

Scattered showers Monday.

Extended Forecast

Issued 06:00 AM EDT 12 July 2026
Tuesday Wind southwest 15 knots increasing to southwest 15 to 25 in the morning.
Wednesday Wind southwest 10 to 15 knots increasing to west 15 to 25.
Thursday Wind light increasing to west 15 to 20 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 - Quai de St-Jean 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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Ice Conditions

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Strong wind warning in effect

Cornwall to Montréal

Issued 03:00 AM EDT 12 July 2026

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 12 July 2026 Today Tonight and Monday At 3:00 a.m. EDT today ridge located on a line northeast-southwest
over Quebec.
By 5:00 p.m. EDT today departing ridge located on a line north-south
over southern Quebec.

At 3:00 a.m. EDT today trough located on a line north-south over
northern Ontario.
By 8:00 p.m. EDT Monday trough located from Montréal to Labrador.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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