Northumberland Strait
Forecast
Marine Forecast
Issued 03:30 PM ADT 17 July 2025
Tonight and Friday.
Strong wind warning in effect.
Wind southwesterly 10 to 15 knots increasing to south 15 to 20 early this evening and to south 20 to 25 near midnight. Wind diminishing to west 15 late Friday morning then increasing to northwest 20 to 25 Friday afternoon. Wind diminishing to northwest 10 to 15 Friday evening.
Showers overnight and Friday with a risk of thunderstorms.
Extended Forecast
Issued 03:30 PM ADT 17 July 2025
Saturday
Wind northwest 15 to 20 knots backing to
southwest 15 to 20 in the afternoon.
Sunday
Wind southwest 15 to 20 knots diminishing to
light.
Monday
Wind northerly 15 to 20 knots.
Stay connected
Weather Conditions
Zoom-in to make a selection

Legend:


Ice Conditions
Ice Forecasts
Issued 10:00 AM EDT 26 May 2025 Forecasts have ended for the season.Warnings
Warnings (In effect)
Strong wind warning in effect
Northumberland Strait
Issued 3:30 PM ADT 17 July 2025'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 or Weatheradio stations.
Synopsis
Technical Marine Synopsis
Issued 3:30 PM ADT 17 July 2025 Tonight and Friday At 3:30 p.m. ADT today low 1003 mb located over southern Quebec.By 3:00 a.m. ADT Friday low 995 mb located over the St. Lawrence
River.
At 8:00 p.m. ADT Friday low 988 mb located over Labrador.
Marine Weather Statement
Issued 3:11 PM ADT 17 July 2025 A low pressure system over Southern Quebec will intensify as istracks northeastward along the St. Lawrence River tonight to lie over
Labrador on Friday. Strong southerly winds will veer to strong to
gale force westerly winds on Friday in the wake of the system before
diminishing Friday night.
Marine interests are advised that a gale warning is in effect for
Anticosti.
Atlantic - Maritimes Area
- Anticosti
- Banquereau
- Bras d'Or Lakes
- Browns Bank
- Cabot Strait
- Chaleur - Miscou - eastern half
- Chaleur - Miscou - western half
- Eastern Shore
- East Coast
- East Scotian Slope
- Fourchu
- Fundy
- Georges Bank
- Grand Manan
- Gulf - Magdalen - eastern half
- Gulf - Magdalen - western half
- Gulf - Port au Port - northwestern half
- Gulf - Port au Port - southeastern half
- Halifax Harbour and Approaches
- LaHave Bank
- Laurentian Fan
- Lurcher
- L'Isle-aux-Coudres to Tadoussac
- Northumberland Strait
- Pointe à Michel to Pointe-des-Monts
- Pointe-des-Monts to Anticosti - northern half
- Pointe-des-Monts to Anticosti - southern half
- Sable
- Southeastern Grand Banks
- Southwestern Grand Banks
- Southwestern Shore
- Southwest Coast
- South Coast
- Tadoussac to Pointe à Michel
- West Scotian Slope
Another Region
- Date modified: