The intermediate compass directions are the directions located between the four cardinal directions of north, east, south, and west. In the standard eight point compass system, the four principal intermediate directions are northeast, southeast, southwest, and northwest. Each lies halfway between two adjacent cardinal directions and therefore corresponds to an angular direction of 45, 135, 225, or 315 degrees when measured clockwise from north. Intermediate directions make directional descriptions more precise than using only four cardinal directions while remaining easier to communicate than numerical bearings in many everyday situations. They are widely used in navigation, maps, weather descriptions, geography, travel, and general orientation.
Northeast lies between north and east and corresponds to 45 degrees in the conventional eight point compass system. Southeast lies between south and east and corresponds to 135 degrees. Southwest lies between south and west and corresponds to 225 degrees. Northwest lies between north and west and corresponds to 315 degrees. These directions are angular relationships rather than locations fixed on a particular page. On a conventional north up map, northeast is toward the upper right, southeast toward the lower right, southwest toward the lower left, and northwest toward the upper left. If the map is rotated, the visual positions change but the geographic meanings remain unchanged.
Intermediate directions can be subdivided further when greater directional precision is required. The sixteen point compass adds directions such as north northeast, east northeast, east southeast, south southeast, south southwest, west southwest, west northwest, and north northwest. These directions divide the circle into 22.5 degree sectors. A thirty two point compass subdivides the circle further into 11.25 degree increments and uses additional traditional directional names. Modern navigation often uses degrees rather than increasingly complex names because numerical bearings provide precise and unambiguous angular measurements. Nevertheless, intermediate names remain useful for describing approximate orientation and communicating direction without excessive technical detail.
The eight point compass system is especially important because it creates a simple relationship between cardinal and intermediate directions. The sequence around the compass is north, northeast, east, southeast, south, southwest, west, northwest, and back to north. Each successive direction is separated by 45 degrees. This regular structure makes the system easy to visualise and use. Intermediate directions can also be described approximately rather than exactly, particularly in everyday language. For example, a road may run generally northeast even if its exact bearing varies along its route. In technical navigation, however, a stated bearing should normally be used when precise direction is required.
Intermediate directions are useful for describing the relative position of geographic features. A town may lie northeast of another town, a coastline may trend southwest, or a wind may be described as coming from the northwest. In weather terminology, a northwest wind means air moving from the northwest toward the southeast, illustrating an important distinction between the direction from which something originates and the direction toward which it moves. Map descriptions can use intermediate directions to divide an area into broad sectors. They can also help people orient themselves when the exact bearing is unnecessary or unavailable.
Intermediate compass directions should not be confused with arbitrary diagonal positions on a map. Their meaning depends on the underlying directional reference. If magnetic direction is being used, the compass measurement is affected by magnetic declination. If a map uses grid north, the corresponding grid direction may differ slightly from magnetic direction. In ordinary map reading, these differences may be small enough to be ignored for approximate descriptions, but they become important for precise navigation. The direction northeast therefore has a general geographic meaning, while the exact magnetic or grid bearing associated with a particular route can depend on location, mapping system, and date.
Intermediate directions are also related to the concept of bearings. Northeast in an eight point compass has a nominal bearing of 45 degrees, but a navigator can use any bearing between 0 and 90 degrees for a direction generally lying in the northeast quadrant. A bearing of 30 degrees is north northeast in a more detailed compass system, while 60 degrees is east northeast. This illustrates the difference between categorical direction names and continuous angular measurements. Compass names divide the directional circle into sectors, whereas bearings allow a direction to be represented as an exact or highly specific angle. Both methods are valid when used within their intended contexts.
The principal intermediate compass directions are northeast, southeast, southwest, and northwest, with each positioned between two cardinal directions. They extend the four direction system into an eight direction framework and provide more descriptive precision without requiring numerical coordinates. More detailed compass systems can divide these sectors further, while numerical bearings can express direction continuously in degrees. Intermediate directions are therefore a bridge between broad cardinal orientation and precise angular navigation. Their correct interpretation depends on the reference north being used, particularly when magnetic, true, and grid directions are distinguished.
