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Grand Manan

Warnings

Forecast

Marine Forecast

Issued 10:00 AM ADT 15 July 2026

Today Tonight and Thursday.

Strong wind warning in effect.

Wind westerly 15 knots increasing to southwest 20 to 25 near noon Thursday then diminishing to west 15 Thursday evening.

Showers Thursday late in the day with a risk of thunderstorms. Fog patches dissipating this afternoon.

Waves

Issued 05:00 AM ADT 15 July 2026
Today Tonight and Thursday. Seas 1 to 2 metres subsiding to 1 or less late overnight.

Extended Forecast

Issued 03:00 AM ADT 15 July 2026
Friday Wind northwest 15 knots backing to southwest 20 in the afternoon.
Saturday Wind southwest 15 knots increasing to southwest 20.
Sunday Wind south 25 knots diminishing to northwest 20.

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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 - Quai de St-Jean 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 19 May 2026 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Grand Manan

Issued 10:00 AM ADT 15 July 2026

'Strong' winds of 20 to 33 knots are 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.

Synopsis

Technical Marine Synopsis

Issued 10:00 AM ADT 15 July 2026 Today Tonight and Thursday At 10:00 a.m. ADT today trough located from the Gulf of St. Lawrence
to Georges Bank.
By 3:00 a.m. ADT Thursday trough located east of the Marine
District.

At 10:00 a.m. ADT Thursday trough located over the St. Lawrence
River.
By 8:00 p.m. ADT Thursday trough located over the southern Marine
District.

Marine Weather Statement

Issued 9:56 AM ADT 15 July 2026 A trough of low pressure from the Gulf of St. Lawrence to Georges
Bank will track across the region today to lie east of the marine
district overnight. Strong to gale force southerly winds ahead of the
trough will shift to moderate to strong westerlies in its wake.

Marine interests are advised that gale warnings are in effect for
East Scotian Slope - southeastern half, Banquereau - southeastern
half, and Laurentian Fan.

St. Lawrence - St. Lawrence River Area

Another Region

Marine Weather for Canada

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