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Pointe-des-Monts to Anticosti - southern half

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 13 December 2025

Today Tonight and Sunday.

Gale warning in effect.

Wind west 25 to 35 knots diminishing to west 15 to 25 this morning then becoming northwest 15 early this evening. Wind diminishing to light overnight then becoming northerly 15 Sunday evening.

Flurries Sunday late in the day.

Freezing spray warning in effect.

Freezing spray ending near noon. Risk of freezing spray today and this evening.

Temperatures near minus 4.

Waves

Issued 03:00 AM EST 13 December 2025
Today Tonight and Sunday. Seas 2 to 3 metres subsiding to 1 to 2 near noon and to 1 near midnight.

Extended Forecast

Issued 06:00 AM EST 13 December 2025
Monday Wind northwest 20 to 30 knots.
Tuesday Wind west 15 to 25 knots.
Wednesday Wind southwest 25 to 35 knots.

Ice Forecast

Issued 10:00 AM EST 12 December 2025 Today Tonight and Saturday 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 12 December 2025 Today Tonight and Saturday

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 Newfoundland near 5029N 5728W. Sea ice
north of the ice edge.

Ice Coverage

Open water.

Warnings

Warnings (In effect)

Gale warning in effect

Pointe-des-Monts to Anticosti - southern half

Issued 03:00 AM EST 13 December 2025

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Freezing spray warning in effect

Pointe-des-Monts to Anticosti - southern half

Issued 03:00 AM EST 13 December 2025

Moderate or severe freezing spray is 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 EST 13 December 2025 Today Tonight and Sunday At 3:00 a.m. EST today ridge located over Montréal.
By 7:00 p.m. EST tonight dissipating ridge located over Matane.

At 3:00 a.m. EST today low 1004 mb located over western Ontario.
By 3:00 a.m. EST Sunday dissipating low 1013 mb located over
Québec city.

At 7:00 a.m. EST Sunday ridge located from the Midwestern states
to Hudson Bay.
By 7:00 p.m. EST Sunday ridge located from the Great Lakes to
Ungava Bay.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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