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Donnacona to Beauport

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 04 September 2026

Tonight and Saturday.

Strong wind warning in effect.

Wind light increasing to northeast 10 to 15 knots this evening and to northeast 15 to 25 Saturday afternoon.

Scattered showers. Risk of thunderstorms late this afternoon and this evening.

Extended Forecast

Issued 06:00 PM EDT 04 September 2026
Sunday Wind northeast 10 to 15 knots becoming light in the morning.
Monday Wind light becoming westerly 10 to 15 knots.
Tuesday Wind northerly 10 to 15 knots diminishing to light.

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Map of St. Lawrence - St. Lawrence River marine weather areas Grand Manan New Carlisle Pointe-au-Père Fundy Park (Alma) Port Menier Miramichi Île Bicquette Charlo Cap-Chat Bathurst Airport CFB Bagotville Jonquière Mistook Normandin Roberval Airport Île-d'Orléans - Quai de St-Jean Deschambault North Bay Airport Beauport L'Isle-aux-Grues Bas Caraquet Lake Nipissing - 45152 Pointe-des-Monts L'Assomption Baie-Comeau Airport Saint-Anicet Cap-Rouge Sainte-Anne-de-Bellevue Lac Memphrémagog Montréal Metropolitain Airport Île Rouge Montréal-Trudeau Int'l Airport Lac Saint-Pierre Trois-Rivières Airport Pointe de l'Islet Pointe Claveau Sept-Îles Airport Kouchibouguac 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 La Pocatière Miscou Island Mont-Joli Airport
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Ice Conditions

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Strong wind warning in effect

Donnacona to Beauport

Issued 3:00 PM EDT 04 September 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 PM EDT 4 September 2026 Tonight and Saturday At 3:00 p.m. EDT today trough located on a line northwest-southeast
over Tadoussac.
By 8:00 p.m. EDT Saturday trough located on a line
northeast-southwest over southern Newfoundland.

At 3:00 p.m. EDT today ridge located on a line northwest-southeast
over Lake Huron.
By 8:00 p.m. EDT Saturday ridge located on a line
northeast-southwest over Labrador.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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