Language selection

Weather shortcuts

Northumberland Strait

Forecast

Marine Forecast

Issued 03:00 AM ADT 16 September 2026

Today Tonight and Thursday.

Wind south 10 to 15 knots increasing to southwest 15 to 20 near noon then veering to northwest 15 to 20 after midnight. Wind diminishing to northerly 10 to 15 Thursday morning and to light Thursday afternoon.

Extended Forecast

Issued 03:00 AM ADT 16 September 2026
Friday Wind southwest 20 to 25 knots increasing to northwest 35 in the afternoon.
Saturday Wind northwest 30 knots diminishing to northwest 15.
Sunday Wind variable 10 to 15 knots becoming southwest 15.

Stay connected

ATOM

Weather Conditions

Skip Image

Zoom-in to make a selection

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
Legend:
buoy Buoy
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 3:00 AM ADT 16 September 2026 Today Tonight and Thursday At 3:00 a.m. ADT today weakening trough located on a line
northeast-southwest over Laurentian Fan.
By 3:30 p.m. ADT today departing trough located on a line
northeast-southwest over Laurentian Fan.

At 3:00 a.m. ADT today quasi-stationary ridge located over Nova
Scotia.

St. Lawrence - St. Lawrence River Area

Another Region

Features

Colour-coded weather alerts

Learn more about weather alerting in Canada

Improved storm alerts

Learn more about targeted warnings for severe thunderstorms and tornadoes

Date modified: