The Arabian Sea is located in the northern Indian Ocean between the Arabian Peninsula and the Indian subcontinent. Its western and northwestern boundaries are associated with Oman, Yemen, the Arabian Peninsula, and the Gulf of Oman, while its northeastern boundary includes Pakistan and the coast of India. Its southern waters open broadly into the central Indian Ocean rather than being enclosed by a narrow southern boundary.
The Gulf of Aden connects its southwestern side to the Red Sea, while the Gulf of Oman connects its northwestern side to the Strait of Hormuz and Persian Gulf. This position places the Arabian Sea at the intersection of major maritime routes linking the Middle East, South Asia, East Africa, and Europe.
The Arabian Sea extends broadly between approximately 5 and 25 degrees north latitude and approximately 50 and 75 degrees east longitude, although exact boundaries vary according to the geographical classification being used. The Arabian Peninsula lies to the west, India and Pakistan lie to the east and northeast, and the open Indian Ocean extends to the south. The sea is substantially wider than many marginal seas and does not have a single narrow southern entrance. Its broad connection with the Indian Ocean allows large scale ocean circulation to pass between the Arabian Sea and the wider Indian Ocean.
The northwestern part of the Arabian Sea leads into the Gulf of Oman. The Gulf of Oman lies between Oman and Iran and reaches the Strait of Hormuz, which provides the maritime connection with the Persian Gulf. This makes the Arabian Sea an essential downstream route for vessels carrying petroleum and other goods from Gulf ports. The southwestern part of the Arabian Sea connects with the Gulf of Aden, which lies between Yemen and the Horn of Africa. The Bab el Mandeb then connects the Gulf of Aden with the Red Sea. These connections make the Arabian Sea part of an important chain of waterways extending from the Persian Gulf and South Asia to the Mediterranean and Europe.
India occupies a large portion of the Arabian Sea's eastern boundary. Important Indian coastal regions include Gujarat, Maharashtra, Goa, Karnataka, Kerala, and parts of the western coast farther north. Major ports such as Mumbai, Jawaharlal Nehru Port, Mundra, and others connect India's economy to international maritime trade. Pakistan's coastline forms the northeastern shore, with Karachi and Port Qasim functioning as major ports. The Indus River reaches the Arabian Sea along Pakistan's coast and creates the extensive Indus Delta. These coastal areas support dense populations, fisheries, industrial activity, ports, and major transport infrastructure.
Oman occupies a substantial section of the western Arabian Sea coast. Its ports include Salalah, which lies near the southern Omani coast and benefits from its position close to major routes between the Arabian Peninsula, East Africa, and South Asia. Yemen occupies the southwestern Arabian Peninsula and borders the Gulf of Aden as well as areas associated with the Arabian Sea. The Horn of Africa lies across the Gulf of Aden, with Somalia and Djibouti forming part of the broader regional geography. This makes the Arabian Sea closely connected with both Arabian and African coastal systems.
The geographical position of the Arabian Sea is strongly linked to the South Asian monsoon. During the summer, southwest monsoon winds blow from the southwest across the Arabian Sea toward India and Pakistan, transporting enormous quantities of moisture. During the winter, the wind pattern reverses and northeast monsoon conditions develop. These seasonal changes affect ocean currents, waves, evaporation, rainfall, marine productivity, and coastal conditions. The Arabian Sea therefore cannot be understood simply as a static geographical space because its physical environment changes dramatically with the seasonal atmospheric circulation.
The Arabian Sea's location has made it a major strategic and economic corridor. Ships travelling between Europe and Asia can use routes through the Suez Canal, Red Sea, Gulf of Aden, Arabian Sea, and Indian Ocean, while energy shipments from the Persian Gulf pass through the Strait of Hormuz into the Gulf of Oman and Arabian Sea. Major international shipping lanes cross the region, linking South Asian ports with the Middle East, Africa, and Europe. The combination of major ports, energy routes, fisheries, monsoon systems, and proximity to densely populated countries makes the Arabian Sea one of the most economically and geographically significant marine areas of the Indian Ocean.
In geographical terms, the Arabian Sea is the large northern Indian Ocean sea lying between the Arabian Peninsula and South Asia, with Oman and Yemen on its western side, Pakistan and India on its eastern and northeastern sides, the Gulf of Oman and Persian Gulf system to the northwest, the Gulf of Aden and Red Sea system to the southwest, and the open Indian Ocean to the south. Its location connects several major regions and maritime chokepoints while placing it directly within the South Asian monsoon system. This combination explains its importance for climate, fisheries, shipping, energy transportation, coastal settlements, historical trade, and international economic geography.
