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Marine Forecast

Issued 03:30 PM ADT 18 August 2026

Tonight and Wednesday.

Wind northeasterly 10 to 15 knots diminishing to light this evening then becoming southwest 15 Wednesday afternoon.

Scattered showers ending near midnight. Fog patches.

Waves

Issued 05:00 PM ADT 18 August 2026
Tonight and Wednesday. Seas 1 metre or less.

Extended Forecast

Issued 03:30 PM ADT 18 August 2026
Thursday Wind southwest 10 to 15 knots.
Friday Wind light.
Saturday Wind light becoming east 15 knots.

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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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land station Land Station
Ice Conditions

Ice Forecasts

Issued 10:00 AM EDT 19 May 2026 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:30 PM ADT 18 August 2026 Tonight and Wednesday At 3:30 p.m. ADT today trough located from the Gulf of St. Lawrence
to Browns Bank.
By 3:30 p.m. ADT Wednesday trough located from the Gulf of
St. Lawrence to East Scotian Slope.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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