Northumberland Strait
Coordinates: 46°05′N 63°35′W / 46.083°N 63.583°W
The Northumberland Strait (French: détroit de Northumberland) is a strait in the southern part of the Gulf of Saint Lawrence in eastern Canada. The strait is formed by Prince Edward Island and the gulf's eastern, southern and western shores.
The western boundary of the strait is delineated by a line running between North Cape, Prince Edward Island and Point Escuminac, New Brunswick while the eastern boundary is delineated by a line running between East Point, Prince Edward Island and Inverness, Nova Scotia.
The Northumberland Strait varies in depth between 17 and 65 metres, with the deepest waters at either end. The tidal patterns are complex; the eastern end has the usual two tides per day, with a tidal range of 1.2 to 1.8 metres, while the western end effectively has only one tide per day.
The strait's shallow depths lend to warm water temperatures in summer months, with some areas reaching 25°C, or 77°F. Consequently, the strait is reportedly home to the warmest ocean water temperatures in Canada, and some of the warmest ocean water temperatures on the Atlantic coast north of Virginia.
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