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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:07 PM EDT 06 June 2026

Tonight and Sunday.

Gale warning in effect.

Wind southwest 15 to 25 knots except southwest 45 near thunderstorms. Wind becoming west 15 to 25 near midnight then becoming northerly 15 early Sunday morning. Wind diminishing to light Sunday evening.

Showers ending near noon Sunday. Risk of thunderstorms late this afternoon and this evening. Visibility as low as 1 mile in showers.

Extended Forecast

Issued 06:00 PM EDT 06 June 2026
Monday Wind light.
Tuesday Wind light.
Wednesday Wind light.

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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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buoy Buoy
land station Land Station
Ice Conditions

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Gale warning in effect

Cornwall to Montréal

Issued 6:29 PM EDT 06 June 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 PM EDT 6 June 2026 Tonight and Sunday At 3:00 p.m. EDT today low 1001 mb located near Lake Saint-Jean.
By 8:00 p.m. EDT Sunday departing low 1004 mb located over Cape
Breton Island.

At 8:00 a.m. EDT Sunday ridge located on a line northeast-southwest
over James Bay.
By 8:00 p.m. EDT Sunday ridge located on a line northeast-southwest
over Lake Saint-Jean.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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