Southeast (compass direction)

Characteristics

Southeast is one of the four principal intercardinal points on the compass rose. It sits between the cardinal points and is commonly subdivided into finer bearings such as east-southeast (ESE) and south-southeast (SSE). Typical identifiers include:

• Abbreviation: SE
• Azimuth: 135° (from north, clockwise)
• Category: intercardinal (ordinal) direction
• Opposite direction: northwest

History and development

The concept of intercardinal directions like southeast arose with early navigation and mapmaking. Mariners and land surveyors divided the horizon into points and later into degrees; the compass rose and magnetic compasses made consistent references to directions practical. Over time, southeast became a standard term in maritime charts, terrestrial surveying and later in aerial navigation and orienteering.

Uses and examples

Southeast is used in many practical contexts: giving bearings for travel, describing the position of geographic regions, and reporting wind or weather directions. In everyday speech people say things like “drive southeast for five miles,” while meteorologists note a southeast wind to indicate its origin or direction of travel. The term also appears in place names and regional labels (for example, the southeast quadrant of a city or a region described as southeastern).

Distinctions and notable facts

Unlike cardinal points (north, south, east, west), intercardinal directions provide intermediate orientation and can be refined further into points such as SSE or ESE for greater precision. In cultural usage, southeast may carry regional connotations (as in “southeast” neighborhoods) beyond its strict compass meaning. For navigation, combining degrees with the term (for example 135° SE) removes ambiguity between magnetic and true bearings.