Grand Manan
Forecast
Marine Forecast
Issued 03:00 AM ADT 01 June 2025
Today Tonight and Monday.
Strong wind warning in effect.
Wind southwest 30 knots diminishing to southwest 15 overnight. Wind southwest 15 Monday.
Waves
Issued 05:00 PM ADT 31 May 2025
Tonight and Sunday.
Seas 1 to 2 metres building to 2 to 3 late this evening and to 3
to 4 late overnight. Seas subsiding to 2 to 3 early Sunday
morning.
Extended Forecast
Issued 03:00 AM ADT 01 June 2025
Tuesday
Wind light becoming southwest 15 knots in the
afternoon.
Wednesday
Wind light becoming southwest 15
knots.
Thursday
Wind southwest 10 to 15 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
Grand Manan
Issued 03:00 AM ADT 01 June 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 3:00 AM ADT 1 June 2025 Today Tonight and Monday At 3:00 a.m. ADT today low 982 mb located over the St. LawrenceRiver.
By 3:30 p.m. ADT Monday weakening low 1001 mb located over Labrador.
St. Lawrence - St. Lawrence River Area
- Anticosti
- Beauport to L'Isle-aux-Coudres
- Browns Bank
- Chaleur - Miscou - eastern half
- Chaleur - Miscou - western half
- Cornwall to Montréal
- Donnacona to Beauport
- Fundy
- Grand Manan
- Gulf - Magdalen
- Kingston to Cornwall
- Lake Memphrémagog - northern half
- Lake Nipissing
- Lake Saint-Jean
- Lurcher
- L'Isle-aux-Coudres to Tadoussac
- Montréal to Trois-Rivières
- Northumberland Strait
- Pointe à Michel to Pointe-des-Monts
- Pointe-des-Monts to Anticosti - northern half
- Pointe-des-Monts to Anticosti - southern half
- Richelieu River and Northern Lake Champlain
- Saguenay to Tadoussac
- Tadoussac to Pointe à Michel
- Trois-Rivières to Donnacona
Another Region
- Date modified: