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Donnacona to Beauport

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 20 May 2026

Today Tonight and Thursday.

Strong wind warning in effect.

Wind southwest 15 to 25 knots becoming northwest 15 this evening then diminishing to light Thursday morning.

Showers ending near noon.

Extended Forecast

Issued 06:00 PM EDT 19 May 2026
Thursday Wind northwest 10 to 15 knots.
Friday Wind light becoming southwest 10 to 15 knots.
Saturday Wind northeast 10 to 15 knots veering to southeast 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)

Strong wind warning in effect

Donnacona to Beauport

Issued 03:00 AM EDT 20 May 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 or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 20 May 2026 Today Tonight and Thursday At 3:00 a.m. EDT today trough located from Lake Saint-Jean to
Rivière-du-Loup.
By 5:00 a.m. EDT Thursday departing trough located on a line
northeast-southwest over Newfoundland.

At 3:00 a.m. EDT today ridge located on a line north-south over
northern Ontario.
By 8:00 p.m. EDT Thursday ridge located from Lake Huron to
Rivière-du-Loup.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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