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Grand Manan

Warnings

Forecast

Marine Forecast

Issued 03:00 AM ADT 13 March 2026

Today Tonight and Saturday.

Wind northwest 30 knots diminishing to westerly 15 to 20 this afternoon then backing to south 20 near midnight. Wind backing to southeast 25 Saturday morning then increasing to west 30 near noon Saturday. Wind veering to northwest 25 Saturday evening.

Flurries early this morning. Snow or rain overnight and Saturday morning. Visibility 1 mile or less in precipitation.

Temperatures plus 1 rising to plus 4 Saturday afternoon.

Waves

Issued 05:00 AM ADT 13 March 2026
Today Tonight and Saturday. Seas 1 to 2 metres building to 2 to 3 Saturday morning then subsiding to 1 to 2 Saturday evening.

Extended Forecast

Issued 03:00 AM ADT 13 March 2026
Sunday Wind northwest 20 knots diminishing to light in the afternoon.
Monday Wind southeast 20 knots increasing to south 30.
Tuesday Wind south 35 knots.

Ice Forecast

Issued 10:00 AM EDT 12 March 2026 Today Tonight and Friday Open water. 

[ Canadian Ice Service ]

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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 March 2026 Today Tonight and Friday

Ice Edge

Ice edge estimated from 4420N 6720W to 4430N 6635W to 4330N 6615W to
4315N 6515W to 4603N 5814W to 4722N 5805W to 4643N 5628W 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 13 March 2026 Today Tonight and Saturday At 3:00 a.m. ADT today trough located on a line northeast-southwest
over the central Marine District.
By 8:00 p.m. ADT tonight departing trough located east of the
Grand Banks.

At 3:00 a.m. ADT Saturday low 999 mb located over southern Ontario.
By 8:00 p.m. ADT Saturday low 1000 mb located over eastern Nova
Scotia.

Marine Weather Statement

Issued 2:49 AM ADT 13 March 2026 A trough of low pressure over the central marine district this
morning will move eastward across eastern waters today. Strong to
gale force southerlies ahead of the trough will shift to strong to
gale force westerlies in its wake.

A second trough of low pressure will approach the region from the
west on Saturday. Strong to gale force southeasterlies ahead of this
low will shift to strong to gale force westerlies in the wake of the
low Saturday evening.

Marine interests are advised that gale warnings are in effect for all
waters except for Fundy, Grand Manan, Lurcher, Browns Bank,
southwestern shore, Northumberland Strait, Chaleur - Miscou - western
half, and Anticosti - northern half.

Marine interests are also advised that freezing spray warnings are in
effect for Cabot Strait - northern half and all Gulf of St. Lawrence
waters except Northumberland Strait.

St. Lawrence - St. Lawrence River Area

Another Region

Marine Weather for Canada

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