Dalupiri Island lies in the east central periphery of the Philippine archipelago. It is bounded by San Bernardino Strait in the north and east, Samar Sea in the south, and Capul Island in west. It is approximately from the
Pacific Ocean and sits near the entrance along the Paso de Acapulco, otherwise known as
San Bernardino Strait. It has long white sand beach around the island. Dalupiri Island is a of gently rolling hills, mostly of coconut vegetation and shrubbery. It is home to white beaches, caves, and the Lagbangan Lake.
Topography The island is composed largely of low and extremely rugged hills and small lowland areas. The island is endowed with relatively rich and fertile soil that allow most crops to be cultivated, but presently it is utilized mostly for coconut plantations. The highest point of the island is in its central southern portion with a maximum elevation of above sea level.
Climate The island has no distinct dry or wet season but it has pronounced rainfall from October to January. The heaviest precipitation occurs in November. May is relatively the driest month. {{Weather box
Barangays San Antonio is politically subdivided into 10
barangays. Each barangay consists of
puroks and some have
sitios. • Burabod • Dalupirit • Manraya • Pilar • Rizal • San Nicolas • Vinisitahan • Ward I (
Poblacion) • Ward II (
Poblacion) • Ward III (
Poblacion) The town center (
poblacion) is divided into three small barangays: Poblacion Ward I, Poblacion Ward II, and Poblacion Ward III. Barangay San Nicolas, named after its patron Saint Nicolas, is home to picturesque rock formation along the coast. Barangay Rizal is home to a solar spring and cave. Barangay Pilar is the southernmost tip of the island where a fish sanctuary is located. This is the home of palatable seashells and other seafood. Barangay Burabod's major livelihood is boatbuilding, fishing, copra and dynamite blasting cap manufacturing. ==Demographics==