Language selection

Weather shortcuts

Northumberland Strait

Forecast

Marine Forecast

Issued 08:00 PM ADT 21 May 2026

Tonight and Friday.

Wind northwest 15 to 20 knots diminishing to northwest 10 to 15 Friday afternoon.

Extended Forecast

Issued 03:30 PM ADT 21 May 2026
Saturday Wind northwest 20 knots diminishing to light in the afternoon.
Sunday Wind light.
Monday Wind south 15 knots.

Stay connected

ATOM

Weather Conditions

Skip Image

Zoom-in to make a selection

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
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 8:00 PM ADT 21 May 2026 Tonight and Friday At 8:00 p.m. ADT tonight ridge located over New England.
By 3:30 p.m. ADT Friday ridge located over the southwestern Marine
District.

Marine Weather Statement

Issued 7:38 PM ADT 21 May 2026 Gale force northwesterlies will reintensify over northern waters
Friday afternoon between a building ridge from the west and a low
pressure system well off to the northeast.

Marine interests are advised that gale warnings are in effect for
Cabot Strait - northern half, Gulf-Magdalen - northeastern half, and
Anticosti.

St. Lawrence - St. Lawrence River Area

Another Region

Features

Colour-coded weather alerts

Learn more about weather alerting in Canada

Date modified: