Grand Manan
Forecast
Marine Forecast
Issued 08:00 PM ADT 16 July 2025
Tonight and Thursday.
Wind southerly 10 to 15 knots increasing to south 15 to 20 Thursday afternoon.
Showers overnight and Thursday with a risk of thunderstorms. Fog patches.
Waves
Issued 05:00 PM ADT 16 July 2025
Tonight and Thursday.
Seas 1 metre.
Extended Forecast
Issued 03:30 PM ADT 16 July 2025
Friday
Wind southerly 15 knots becoming northwest 15
in the afternoon.
Saturday
Wind light.
Sunday
Wind light.
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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
No watches or warnings in effect.
Synopsis
Technical Marine Synopsis
Issued 8:00 PM ADT 16 July 2025 Tonight and Thursday At 8:00 p.m. ADT tonight low 1009 mb located over the St. LawrenceRiver.
By 10:00 a.m. ADT Thursday weakening low 1011 mb located northeast
of the Marine District.
At 10:00 a.m. ADT Thursday low 1004 mb located near the Great Lakes.
By 8:00 p.m. ADT Thursday low 1000 mb located near the St. Lawrence
River.
St. Lawrence - St. Lawrence River Area
- Anticosti - northern half
- Anticosti - southern 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
- 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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