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Northumberland Strait

Forecast

Marine Forecast

Issued 03:00 AM ADT 08 September 2026

Today Tonight and Wednesday.

Strong wind warning in effect.

Wind variable 10 to 15 knots increasing to northwesterly 20 to 25 early this morning except light over western sections overnight. Wind diminishing to light Wednesday morning then increasing to south 15 to 20 Wednesday evening.

Scattered showers today and tonight.

Extended Forecast

Issued 03:00 AM ADT 08 September 2026
Thursday Wind south 35 knots diminishing to southwest 25 late in the day.
Friday Wind southwest 25 knots veering to northwest 30.
Saturday Wind northwest 20 knots diminishing to light.

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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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Ice Conditions

Ice Forecasts

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

Warnings (In effect)

Strong wind warning in effect

Northumberland Strait

Issued 03:00 AM ADT 08 September 2026

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM ADT 8 September 2026 Today Tonight and Wednesday At 3:00 a.m. ADT today trough located from Newfoundland to New
Brunswick.
By 3:30 p.m. ADT Wednesday departing trough located over the
Grand Banks.

At 8:00 p.m. ADT tonight ridge located over New England.
By 9:00 p.m. ADT Wednesday ridge located from Newfoundland to West
Scotian Slope.

At 8:00 p.m. ADT Wednesday approaching trough located over Quebec.

St. Lawrence - St. Lawrence River Area

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