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Donnacona to Beauport

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 10 March 2026

Today Tonight and Wednesday.

Gale warning in effect.

Wind southwest 10 to 15 knots becoming light early this morning then increasing to northeast 10 to 20 early this evening. Wind increasing to northeast 20 to 30 Wednesday morning and to northeast 30 to 40 near noon Wednesday.

Periods of rain beginning this afternoon changing to periods of snow this evening and ending this evening. Snow Wednesday morning and afternoon changing to freezing rain. Visibility 1 mile or less in snow.

Temperatures plus 5 falling to zero this morning then rising to plus 5 this afternoon. Temperatures falling to minus 6 Wednesday morning.

Extended Forecast

Issued 06:00 PM EDT 09 March 2026
Wednesday Wind northeast 20 to 30 knots.
Thursday Wind northeast 15 to 25 knots becoming west 15 to 25.
Friday Wind west 10 to 15 knots becoming northeast 10 to 15.

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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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Ice Conditions

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Gale warning in effect

Donnacona to Beauport

Issued 03:00 AM EDT 10 March 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 AM EDT 10 March 2026 Today Tonight and Wednesday At 3:00 a.m. EDT today trough located from Sept-Îles to Montréal.
By 2:00 a.m. EDT Wednesday dissipating trough located on a line
northeast-southwest over Newfoundland.

At 3:00 a.m. EDT today high 1022 mb located over northern Ontario.
By 8:00 p.m. EDT Wednesday high 1030 mb located over Labrador.

At 8:00 p.m. EDT tonight low 1004 mb located over the Midwestern
states.
By 8:00 p.m. EDT Wednesday low 994 mb located over Lake Ontario.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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