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Montréal to Trois-Rivières

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Marine Forecast

Issued 03:00 AM EDT 17 August 2026

Today Tonight and Tuesday.

Wind southerly 10 to 15 knots becoming light early this morning. Wind light tonight and Tuesday.

Showers ending near noon. Visibility as low as 1 mile in showers.

Extended Forecast

Issued 06:00 AM EDT 17 August 2026
Wednesday Wind light increasing to southwest 15 to 25 knots in the afternoon.
Thursday Wind light.
Friday Wind southwest 10 to 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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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 EDT 17 August 2026 Today Tonight and Tuesday At 3:00 a.m. EDT today trough located on a line north-south over
Lake Ontario.
By 8:00 a.m. EDT Tuesday departing trough located from the Strait
of Belle Isle to New Brunswick.

At 3:00 a.m. EDT today ridge located on a line northeast-southwest
over Lake Superior.
By 8:00 p.m. EDT Tuesday ridge located from Lake Ontario to
Labrador.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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