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Pointe-des-Monts to Anticosti - northern half

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 05 December 2025

Today Tonight and Saturday.

Gale warning in effect.

Wind northwest 30 to 40 knots diminishing to northwest 15 to 25 this afternoon and to northwest 10 to 15 near midnight. Wind becoming light overnight then becoming southerly 15 near noon Saturday.

Freezing spray warning in effect.

Freezing spray ending near midnight.

Temperatures minus 10 rising to minus 4 Saturday afternoon.

Waves

Issued 03:00 AM EST 05 December 2025
Today Tonight and Saturday. Seas 2 to 3 metres subsiding to 1 to 2 early this evening and to 1 or less overnight.

Extended Forecast

Issued 06:00 PM EST 04 December 2025
Saturday Wind northwest 10 to 15 knots becoming southerly 10 to 15 in the afternoon.
Sunday Wind southwest 10 to 20 knots increasing to westerly 20 to 30.
Monday Wind west 15 to 25 knots increasing to west 25 to 35.

Ice Forecast

Issued 10:00 AM EST 4 December 2025 Today Tonight and Friday Open water except 2 tenths new ice along parts of the coast. 

[ 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 4 December 2025 Today Tonight and Friday

Ice Edge

Ice edge estimated from Gaspe Peninsula near 4856N 6712W to 4956N
6635W to 4958N 6014W to Quebec near 5125N 5737W. Sea ice north of
the ice edge.

Ice Coverage

Open water except 2 tenths new ice along parts of the coast.

Warnings

Warnings (In effect)

Gale warning in effect

Pointe-des-Monts to Anticosti - northern half

Issued 03:00 AM EST 05 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 - northern half

Issued 03:00 AM EST 05 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 5 December 2025 Today Tonight and Saturday At 3:00 a.m. EST today intensifying low 985 mb located over
Newfoundland.
By 7:00 p.m. EST tonight low 961 mb located east of Newfoundland.

At 3:00 a.m. EST today ridge located on a line north-south over
Montréal.
By 7:00 p.m. EST Saturday ridge located on a line north-south over
the Gulf of St. Lawrence.

At 7:00 p.m. EST tonight trough located on a line
northeast-southwest over Lake Superior.
By 7:00 p.m. EST Saturday trough located on a line
northeast-southwest over Lake Saint-Jean.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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