Grand Manan
Forecast
Marine Forecast
Issued 03:00 AM ADT 20 July 2025
Today Tonight and Monday.
Strong wind warning in effect.
Wind southwest 10 to 15 knots increasing to southwest 20 this afternoon then diminishing to southwest 10 to 15 this evening. Wind diminishing to light overnight then increasing to northwest 15 Monday morning. Wind increasing to northwest 20 to 25 Monday afternoon then diminishing to northwest 15 Monday evening.
Showers and fog patches tonight and Monday. Risk of thunderstorms tonight.
Waves
Extended Forecast
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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 06:36 AM ADT 20 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 3:00 AM ADT 20 July 2025 Today Tonight and Monday At 3:00 a.m. ADT today trough located over southern Quebec.By 8:00 p.m. ADT tonight trough located from the Gulf of
St. Lawrence to the Gulf of Maine.
At 3:30 p.m. ADT Monday trough located on a line north-south over
the eastern Marine District.
At 3:00 a.m. ADT today ridge located over the southern Marine
District.
By 8:00 p.m. ADT tonight departing ridge located over the Grand
Banks.
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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