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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 17 April 2026

Tonight and Saturday.

Wind light increasing to southeast 10 to 20 knots early Saturday morning and to southeast 20 to 30 near noon Saturday.

Extended Forecast

Issued 06:00 AM EDT 17 April 2026
Sunday Wind south 15 to 25 knots becoming west 15 in the morning.
Monday Wind west 15 knots.
Tuesday Wind northwest 15 knots becoming southeasterly 10 to 20 late in the day.

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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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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 PM EDT 17 April 2026 Tonight and Saturday At 3:00 p.m. EDT today ridge located on a line north-south over
Cornwall.
By 8:00 p.m. EDT Saturday ridge located from Labrador Coast to
Newfoundland.

At 8:00 p.m. EDT tonight deepening trough located on a line
north-south over Lake Superior.
By 8:00 p.m. EDT Saturday trough located on a line north-south
over Lake Ontario.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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