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Grand Manan

Warnings

Forecast

Marine Forecast

Issued 03:00 AM ADT 09 March 2026

Today Tonight and Tuesday.

Wind westerly 20 knots backing to southwest 15 early this morning then increasing to southwest 20 to 25 early this evening. Wind diminishing to southwest 15 Tuesday morning and to light near noon Tuesday. Wind becoming southwest 15 Tuesday evening.

Fog patches forming this morning and dissipating near midnight. Fog patches reforming Tuesday evening.

Waves

Issued 05:00 AM ADT 09 March 2026
Today Tonight and Tuesday. Seas 1 to 2 metres subsiding to 1 or less Tuesday afternoon.

Extended Forecast

Issued 03:00 AM ADT 09 March 2026
Wednesday Wind northeast 25 to 30 knots.
Thursday Wind southwest 35 knots diminishing to southwest 25 late in the day.
Friday Wind west 35 knots diminishing to southwest 25.

Ice Forecast

Issued 4:10 PM EDT 8 March 2026 Today Tonight and Monday Open water. 

[ 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 4:10 PM EDT 8 March 2026 Today Tonight and Monday

Ice Edge

Ice edge estimated from 4420N 6720W to 4430N 6635W to 4330N 6615W to
4315N 6515W to 4549N 5807W to 4708N 5834W to 4630N 5615W to
Newfoundland near 4640N 5530W. Sea ice north of the ice edge.

Ice Coverage

Open water.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM ADT 9 March 2026 Today Tonight and Tuesday At 3:00 a.m. ADT today trough located over Ontario.
By 8:00 p.m. ADT tonight approaching trough located over Quebec.

At 3:00 a.m. ADT Tuesday trough located over the St. Lawrence River.
By 10:00 a.m. ADT Tuesday departing trough located over southeastern
Labrador.

At 3:00 a.m. ADT today departing trough located over Newfoundland.

Marine Weather Statement

Issued 2:35 AM ADT 9 March 2026 A trough of low pressure over Ontario will move eastward today
passing just north of the marine district Tuesday morning. Increasing
southwesterly winds will reach strong to gale force ahead of the
trough. Diminishing winds are expected through the day Tuesday as the
tough pulls away and a weak ridge builds into the district.

Marine interests are advised that a gale warning is in effect for
Anticosti - northwestern half.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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