Language selection

Government of Canada / Gouvernement du Canada

Search

Features

Banner for severe thunderstorms and tornadoes alerts

Banner for severe thunderstorms and tornadoes alerts

Weather shortcuts

Saguenay to Tadoussac

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 18 August 2026

Today Tonight and Wednesday.

Wind light becoming east 10 to 15 knots near noon then becoming west 10 to 15 near noon Wednesday.

Showers Wednesday afternoon and evening with a risk of thunderstorms. Fog banks dissipating late this morning.

Extended Forecast

Issued 06:00 AM EDT 18 August 2026
Thursday Wind light.
Friday Wind light.
Saturday Wind light.

Stay connected

ATOM

List of Official Text Forecasts
Resources

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

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 18 August 2026 Today Tonight and Wednesday At 3:00 a.m. EDT today ridge located from Montréal to Lake
Saint-Jean.
By 8:00 p.m. EDT tonight dissipating ridge located on a line
north-south over Labrador.

At 3:00 a.m. EDT today trough located on a line northeast-southwest
over Lake Superior.
By 8:00 p.m. EDT Wednesday trough located on a line
northeast-southwest over the Gaspe Peninsula.

St. Lawrence - St. Lawrence River Area

Another Region

Marine Weather for Canada

Weather shortcuts


How to use
  • Add to shortcuts
    • Go to the desired page on the site, open the Weather shortcuts menu and click on the "Add to shortcuts" button
    • Page name will display in the "Add this page" window, the name can be changed by highlighting the text and entering the desired name
    • Click on the "Save" button to add the link to the list
    • Click on the "X" button to close the panel
  • Delete a link
    • Click on the "Organize shortcuts" button
    • Select the link to delete
    • Click on the "Delete" button to remove the link from the list
    • Click on the "Close" button to save the change
  • Move a link up/down the list
    • Click on the "Organize shortcuts" button
    • Click and hold the link and move to new location in the list
    • Click on the "Close" button to save the change
  • Rename a link
    • Click on the "Organize shortcuts" button
    • Select the link to rename
    • Click on the "Rename" button and change the link name
    • Click the enter or tab key
    • Click on the "Close" button to save the change
  • Keyboard navigation
    • Use the Tab key to move to a button or link
    • Use the Enter key to click on buttons or links
    • Organize shortcuts navigation
      • Use the ↑ Up key to select the link above. If none are selected, it will select the first link.
      • Use the ↓ Down key to select the link below. If none are selected, it will select the last link.
      • Use the Page Up key to move a selection up in the list.
      • Use the Page Down key to move a selection down in the list.
  • Restore default list

    Warning: Clicking on the button below will remove all your customized links.

Customized Weather shortcuts

Save your customized list as a bookmark.

Copy/paste or click on the link below then when the page displays, you can bookmark the page using the web browser. Bookmarking your customized list will allow you to access it even if the local storage on your device is erased.

Features

Colour-coded weather alerts

Learn more about weather alerting in Canada

Thunderstorm Outlooks

Find the Thunderstorm Outlook for your area.

Improved storm alerts

Learn more about targeted warnings for severe thunderstorms and tornadoes

Feedbackabout this web site
Date modified: