Grand Manan
Forecast
Marine Forecast
Issued 03:30 PM ADT 19 July 2025
Tonight and Sunday.
Strong wind warning in effect.
Wind southwest 15 to 20 knots diminishing to southwest 10 to 15 near midnight then increasing to southwest 20 Sunday afternoon. Wind diminishing to southwest 10 to 15 Sunday evening.
Showers and fog patches Sunday evening with a risk of thunderstorms.
Waves
Issued 05:00 AM ADT 19 July 2025
Today Tonight and Sunday.
Seas 1 metre or less building to 1 to 2 this
evening.
Extended Forecast
Issued 03:30 PM ADT 19 July 2025
Monday
Wind northwest 15 knots.
Tuesday
Wind northwest 15 knots backing to southwest
15 to 20.
Wednesday
Wind light becoming southwest 10 to 15
knots.
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Weather Conditions
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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 3:30 PM ADT 19 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 19 July 2025 Tonight and Sunday At 3:30 p.m. ADT today quasi-stationary ridge located over thesouthern Marine District.
At 10:00 a.m. ADT Sunday trough located northwest of the Marine
District.
By 8:00 p.m. ADT Sunday trough located from the Gulf of St. Lawrence
to the Gulf of Maine.
St. Lawrence - St. Lawrence River Area
- Anticosti
- Beauport to L'Isle-aux-Coudres
- Browns Bank
- Chaleur - Miscou
- 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
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