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Pointe-des-Monts to Anticosti - southern half

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 16 December 2025

Today Tonight and Wednesday.

Wind westerly 20 to 30 knots today tonight and Wednesday.

Flurries ending this evening. Flurries Wednesday. Visibility as low as 1 mile in flurries.

Risk of freezing spray today and tonight.

Temperatures minus 10 rising to zero Wednesday morning.

Waves

Issued 03:00 AM EST 16 December 2025
Today Tonight and Wednesday. Seas 1 to 2 metres.

Extended Forecast

Issued 06:00 AM EST 16 December 2025
Thursday Wind west 25 to 35 knots diminishing to southerly 10 to 20 in the afternoon.
Friday Wind south 10 to 20 knots increasing to south 25 to 35.
Saturday Wind southwest 35 to 45 knots.

Ice Forecast

Issued 10:00 AM EST 16 December 2025 Today Tonight and Wednesday Open water. 

[ 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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land station Land Station
Ice Conditions

Ice Forecasts

Issued 10:00 AM EST 16 December 2025 Today Tonight and Wednesday

Ice Edge

First 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.

Second ice edge estimated from Nova Scotia near 4551N 6201W to
Prince Edward Island near 4621N 6211W. Sea ice west of the ice edge.

Third ice edge estimated from Prince Edward Island near 4628N 6231W
to 4640N 6329W to 4736N 6409W 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.

Fourth ice edge estimated from Anticosti Island near 4945N 6301W to
4946N 5954W to 5106N 5804W to 5035N 5733W to 4818N 5929W to 4731N
5923W to Newfoundland near 4736N 5740W. Sea ice north then east of
the ice edge.

Ice Coverage

Open water.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EST 16 December 2025 Today Tonight and Wednesday At 3:00 a.m. EST today departing low 938 mb located off
Newfoundland.

At 3:00 a.m. EST today ridge located from Lake Ontario to Ungava
Bay.
By 3:00 a.m. EST Wednesday departing ridge located on a line
north-south over Newfoundland.

At 7:00 p.m. EST tonight trough located on a line
northeast-southwest over northern Ontario.
By 7:00 p.m. EST Wednesday trough located from Lake Ontario to
Labrador.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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