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Grand Manan

Warnings

Forecast

Marine Forecast

Issued 03:30 PM ADT 12 April 2026

Tonight and Monday.

Wind southwesterly 15 knots backing to south 20 early Monday morning then increasing to south 30 near noon Monday. Wind veering to southwest 25 Monday evening.

Showers Monday. Fog patches forming Monday evening.

Waves

Issued 05:00 AM ADT 12 April 2026
Today Tonight and Monday. Seas 1 metre or less building to 1 to 2 near midnight.

Extended Forecast

Issued 03:30 PM ADT 12 April 2026
Tuesday Wind west 20 knots veering to northerly 15 in the afternoon.
Wednesday Wind east 15 knots.
Thursday Wind light becoming southwest 15 knots.

Ice Forecast

Issued 10:00 AM EDT 12 April 2026 Today Tonight and Monday Ice free. 

[ Canadian Ice Service ]

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Weather Conditions

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

Ice Forecasts

Issued 10:00 AM EDT 12 April 2026 Today Tonight and Monday

Ice Edge

Ice edge estimated from Cape Breton Island near 4607N 5949W to 4631N
5919W to 4844N 6156W to 4919N 6025W to Newfoundland near 4753N
5924W. Sea ice west then northeast of the ice edge.

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:30 PM ADT 12 April 2026 Tonight and Monday At 3:30 p.m. ADT today low 997 mb located over eastern Newfoundland.
By 8:00 p.m. ADT tonight low 992 mb located east of Newfoundland.

At 3:30 p.m. ADT today ridge located west of the Marine District.
By 10:00 a.m. ADT Monday departing ridge located over the
southeastern Marine District.

At 8:00 p.m. ADT Monday approaching low 1000 mb located near the
St. Lawrence River.

Marine Weather Statement

Issued 3:24 PM ADT 12 April 2026 A low pressure system over Eastern Newfoundland will pull away from
the marine district by tonight. Strong to gale force northwesterlies
will continue over eastern waters will diminish this evening.

Marine interests are advised that gale warnings are in effect for
Fourchu, Banquereau, Laurentian Fan, Cabot Strait.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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