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Halifax Harbour and Approaches

Warnings

Forecast

Marine Forecast

Issued 03:00 AM AST 16 December 2025

Today Tonight and Wednesday.

Wind northwest 20 knots backing to west 15 early this morning then to southwest 20 near midnight. Wind increasing to southwest 30 overnight. Wind southwest 30 Wednesday.

Temperatures minus 5 rising to plus 7 Wednesday afternoon.

Extended Forecast

Issued 03:00 AM AST 16 December 2025
Thursday Wind northwest 30 knots diminishing to south 20 in the afternoon.
Friday Wind south 25 knots increasing to south 40 to 50.
Saturday Wind southwest 35 knots diminishing to west 30.

Ice Forecast

Issued 10:00 AM EST 15 December 2025 Today Tonight and Tuesday Ice free. 

[ Canadian Ice Service ]

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Map of Atlantic - Maritimes marine weather areas Summerside Stephenville Airport North Cape Burgeo Pointe-des-Monts Port aux Basques Sagona Island St. Lawrence Tracadie Winterland Branch Hill Wreckhouse Halifax Harbour - 44258 LaHave Bank - 44150 Sept-Îles Airport Banquereau - 44139 Longue-Pointe-de-Mingan Île Rouge Île aux Perroquets Havre-Saint-Pierre Airport East Scotia Slope - 44137 Baie-Comeau Airport Mont-Joli Airport Rivière-la-Madeleine Saint John Airport Gaspé Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport Heath Point Miscou Island Kouchibouguac Îles de la Madeleine Airport Kouchibouguac La Pocatière Grand Manan St. Stephen Fundy Park (Alma) New Carlisle Miramichi Pointe-au-Père Charlo Port Menier Bathurst Airport Île Bicquette Bas Caraquet Cap-Chat East Chedabucto Bay – 44488 West Chedabucto Bay – 44489 Lunenburg Charlottetown Airport Yarmouth Airport Pointe-Noire Western Head J.A. Douglas McCurdy Sydney Airport Shearwater Airport St.Paul Island Sable Island Parrsboro North Mountain Nappan AAFC McNabs Island East Point Kentville AAFC Ingonish Beach Hart Island CFB Greenwood Grand Étang Eskasoni (First Nations) Debert Caribou Point Brier Island Cap-d'Espoir Beaver Island Baccaro Point
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Ice Conditions

Ice Forecasts

Issued 10:00 AM EST 15 December 2025 Today Tonight and Tuesday

Ice Edge

First ice edge estimated from 4723N 6136W to 4738N 6112W to 4744N
6124W to 4734N 6159W to 4706N 6212W to 4706N 6147W to 4723N 6136W.
Sea ice within the ice edge.

Second ice edge estimated from Nova Scotia near 4551N 6201W to
Prince Edward Island near 4621N 6211W. Sea ice west of the ice edge.

Third ice edge estimated from Prince Edward Island near 4628N 6231W
to 4640N 6329W to 4736N 6409W to 4904N 6404W to 4925N 6516W to 4916N
6703W to 4956N 6635W to Anticosti Island near 4924N 6336W. Sea ice
west then north of the ice edge.

Fourth ice edge estimated from Anticosti Island near 4945N 6301W to
4946N 5954W to 5106N 5804W to Newfoundland near 5029N 5728W. Sea ice
north of the ice edge.

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM AST 16 December 2025 Today Tonight and Wednesday At 3:00 a.m. AST today departing low 943 mb located northeast
of Newfoundland.

At 3:00 a.m. AST today ridge located over southeastern Quebec.
By 8:00 p.m. AST tonight ridge located over the southwestern
Marine District.

At 10:00 a.m. AST Wednesday trough from 979 mb low located on a
line northeast-southwest over Quebec.
By 8:00 p.m. AST Wednesday trough from 978 mb low located on a
line northeast-southwest over the St. Lawrence River.

Marine Weather Statement

Issued 2:37 AM AST 16 December 2025 A low pressure system northeast of Newfoundland will continue to
track northeastward away from the region today. Gale force
northwesterly winds behind the low will diminish this morning.

A trough of low pressure over Quebec Wednesday morning will push east
to lie over the St Lawrence River by Wednesday evening. Strong to
gale force southwesterlies will develop early Wednesday ahead of the
trough.

Marine interests are advised that gale warnings are in effect for all
waters except Northumberland Strait - western half, Chaleur - Miscou,
and Anticosti - northwestern half.

Freezing spray warnings are in effect for Northumberland Strait, Gulf
- Magdalen, Chaleur - Miscou, and Anticosti.

Atlantic - Maritimes Area

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Marine Weather for Canada

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