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Donnacona to Beauport

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Forecast

Marine Forecast

Issued 03:00 AM EST 16 December 2025

Today Tonight and Wednesday.

Wind light increasing to southwest 15 to 20 knots this morning then diminishing to light this evening. Wind increasing to southwest 10 to 15 Wednesday morning and to southwest 15 to 25 Wednesday afternoon.

Flurries Wednesday. Visibility as low as 1 mile in flurries.

Temperatures minus 10 rising to zero Wednesday evening.

Extended Forecast

Issued 06:00 AM EST 16 December 2025
Thursday Wind light increasing to south 15 to 25 knots in the afternoon.
Friday Wind south 15 to 25 knots increasing to southwest 25 to 35.
Saturday Wind west 15 to 25 knots diminishing to light late in the day.

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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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buoy Buoy
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 16 December 2025 Today Tonight and Wednesday At 3:00 a.m. EST today departing low 938 mb located off
Newfoundland.

At 3:00 a.m. EST today ridge located from Lake Ontario to Ungava
Bay.
By 3:00 a.m. EST Wednesday departing ridge located on a line
north-south over Newfoundland.

At 7:00 p.m. EST tonight trough located on a line
northeast-southwest over northern Ontario.
By 7:00 p.m. EST Wednesday trough located from Lake Ontario to
Labrador.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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