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Donnacona to Beauport

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Forecast

Marine Forecast

Issued 03:00 AM EST 17 December 2025

Today Tonight and Thursday.

Wind southwest 10 to 15 knots increasing to southwest 15 to 25 near noon then veering to northwest 15 to 25 late this evening. Wind diminishing to west 10 to 15 after midnight then becoming light near noon Thursday.

Flurries today and this evening. Visibility as low as 1 mile in flurries.

High today zero. Low tonight minus 9. High Thursday minus 1.

Extended Forecast

Issued 06:00 AM EST 17 December 2025
Friday Wind south 15 to 25 knots increasing to southwest 25 to 35 in the afternoon.
Saturday Wind west 15 to 25 knots diminishing to light late in the day.
Sunday Wind easterly 15 knots increasing to southwest 15 to 25.

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

There is no ice forecast issued for this area.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EST 17 December 2025 Today Tonight and Thursday At 3:00 a.m. EST today departing ridge located on a line north-south
over Newfoundland.

At 3:00 a.m. EST today trough located on a line northeast-southwest
over northwestern Québec city.
By 3:00 a.m. EST Thursday departing trough located on a line
north-south over Newfoundland.

At 3:00 p.m. EST today ridge located on a line north-south over
the Great Lakes.
By 7:00 p.m. EST Thursday ridge located on a line
northwest-southeast over the Gulf of St. Lawrence.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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