Grand Manan
Forecast
Marine Forecast
Issued 03:00 AM ADT 22 June 2025
Today Tonight and Monday.
Strong wind warning in effect.
Wind southwest 10 to 15 knots increasing to southerly 25 this morning then diminishing to southwest 10 to 15 this evening. Wind becoming northerly 10 to 15 near midnight then becoming light Monday morning.
Periods of rain today and this evening. Fog patches forming this morning and dissipating Monday afternoon.
Waves
Issued 05:00 PM ADT 21 June 2025
Tonight and Sunday.
Seas 1 metre building to 2 Sunday afternoon.
Extended Forecast
Issued 03:30 PM ADT 21 June 2025
Monday
Wind light.
Tuesday
Wind southwest 15 to 20 knots.
Wednesday
Wind northwest 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 03:00 AM ADT 22 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 22 June 2025 Today Tonight and Monday At 3:00 a.m. ADT today ridge located from Georges Bank to AnticostiIsland.
By 3:30 p.m. ADT today departing ridge located over the southeastern
Marine District.
At 10:00 a.m. ADT today trough located west of the Marine District.
By 3:00 a.m. ADT Monday weakening trough located from the Gulf of
St. Lawrence to Cape Cod.
At 8:00 p.m. ADT Monday approaching trough located over southern
Quebec.
Marine Weather Statement
Issued 6:35 PM ADT 21 June 2025 Marine interests are advised that all gale warnings have ended.
St. Lawrence - St. Lawrence River Area
- Anticosti - northeastern half
- Anticosti - southwestern half
- 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 - western half
- Lake Memphrémagog - northern half
- Lake Nipissing
- Lake Saint-Jean
- Lurcher
- L'Isle-aux-Coudres to Tadoussac
- Montréal to Trois-Rivières
- Northumberland Strait - western half
- Pointe à Michel to Pointe-des-Monts
- Pointe-des-Monts to Anticosti - northern half
- Pointe-des-Monts to Anticosti - southern half
- Prescott to Cornwall
- Richelieu River and Northern Lake Champlain
- Saguenay to Tadoussac
- Tadoussac to Pointe à Michel
- Trois-Rivières to Donnacona
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