Grand Manan
Forecast
Marine Forecast
Issued 08:00 PM ADT 12 September 2026
Tonight and Sunday.
Wind southwesterly 10 to 15 knots increasing to southerly 15 to 20 near noon Sunday.
Rain and fog patches Sunday evening.
Waves
Issued 05:00 PM ADT 12 September 2026
Tonight and Sunday.
Seas 1 metre or less.
Extended Forecast
Issued 03:30 PM ADT 12 September 2026
Monday
Wind westerly 15 knots increasing to northwest
25 in the afternoon.
Tuesday
Wind northerly 15 knots diminishing to
light.
Wednesday
Wind southwest 15 knots.
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Weather Conditions
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Ice Conditions
Ice Forecasts
Issued 10:00 AM EDT 19 May 2026 Forecasts have ended for the season.Warnings
No watches or warnings in effect.
Synopsis
Technical Marine Synopsis
Issued 8:00 PM ADT 12 September 2026 Tonight and Sunday At 8:00 p.m. ADT tonight ridge located over the southern MarineDistrict.
By 3:00 a.m. ADT Sunday departing ridge located over the eastern
Marine District.
At 3:00 a.m. ADT Sunday trough located from Quebec to the Great
Lakes.
By 8:00 p.m. ADT Sunday trough located from Labrador to Cape Cod.
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
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