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Grand Manan

Warnings

Forecast

Marine Forecast

Issued 08:00 PM AST 06 December 2025

Tonight and Sunday.

Wind south 15 to 20 knots becoming northwest 15 to 20 late overnight then diminishing to light Sunday afternoon.

Waves

Issued 05:00 PM AST 06 December 2025
Tonight and Sunday. Seas 1 metre or less building to 1 to 2 late overnight.

Extended Forecast

Issued 03:30 PM AST 06 December 2025
Monday Wind northeast 15 knots increasing to northwest 25 to 35 in the afternoon.
Tuesday Wind northwest 20 knots backing to southwest 20.
Wednesday Wind southwest 25 knots.

Ice Forecast

Issued 10:00 AM EST 6 December 2025 Today Tonight and Sunday Ice free. 

[ Canadian Ice Service ]

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Map of St. Lawrence - St. Lawrence River marine weather areas Cap-Chat Mont-Joli Airport Bathurst Airport Île Bicquette Charlo Port Menier Miramichi Pointe-au-Père Fundy Park (Alma) New Carlisle Grand Manan Bas Caraquet CFB Bagotville Jonquière Mistook Normandin Roberval Airport Deschambault Beauport North Bay Airport Trois-Rivières Airport Lake Nipissing - 45152 Kouchibouguac Baie-Comeau Airport Île d'Orléans Saint-Anicet Sainte-Anne-de-Bellevue Cap-Rouge Lac Memphrémagog Montréal Metropolitain Airport Montréal-Trudeau Int'l Airport Île Rouge Lac Saint-Pierre L'Isle-aux-Grues L'Assomption Pointe de l'Islet Pointe Claveau Sept-Îles Airport Pointe-des-Monts North Cape Pointe-Noire Yarmouth Airport Cap-d'Espoir Brier Island Rivière-la-Madeleine St. Stephen Gaspé Airport Saint John Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport Miscou Island Kouchibouguac La Pocatière
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Ice Conditions

Ice Forecasts

Issued 10:00 AM EST 6 December 2025 Today Tonight and Sunday

Ice Edge

First ice edge estimated from New Brunswick near 4511N 6609W to
4508N 6549W to 4518N 6513W to Nova Scotia near 4510N 6445W. Sea ice
northeast of the ice edge.

Second ice edge estimated from Nova Scotia near 4546N 6254W to 4558N
6310W to Prince Edward Island near 4558N 6250W. Sea ice west of the
ice edge.

Third ice edge estimated from 4723N 6136W to 4738N 6112W to 4744N
6124W to 4734N 6159W to 4706N 6212W to 4706N 6147W to 4723N 6136W.
Sea ice within the ice edge.

Fourth ice edge estimated from Prince Edward Island near 4630N 6319W
to 4741N 6431W to 4827N 6402W to 4904N 6404W to 4925N 6516W to 4916N
6703W to 4956N 6635W to Anticosti Island near 4924N 6336W. Sea ice
west then north of the ice edge.

Fifth ice edge estimated from Anticosti Island near 4949N 6317W to
4946N 5954W to Quebec near 5125N 5736W. Sea ice north of the ice
edge.

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 8:00 PM AST 6 December 2025 Tonight and Sunday At 8:00 p.m. AST tonight low 1001 mb located south of East Scotian
Slope.
By 10:00 a.m. AST Sunday departing low 990 mb located southeast
of Laurentian Fan.

At 3:00 a.m. AST Sunday low 1004 mb located near the St. Lawrence
River.
By 3:30 p.m. AST Sunday low 1000 mb located over the northeastern
Gulf of St. Lawrence.

At 8:00 p.m. AST tonight dissipating ridge located over the eastern
Marine District.

Marine Weather Statement

Issued 7:15 PM AST 6 December 2025 Marine interests are advised that freezing spray warnings are in
effect for Gulf-Magdalen - northeastern half, Chaleur-Miscou, and
Anticosti.

St. Lawrence - St. Lawrence River Area

Another Region

Marine Weather for Canada

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