Umatac (Chamorro: Humåtak), formerly called Umata, is a village on the southwestern coast of the United States territory of Guam. The month of March in the Chamorro language is "Umatalaf," or "to catch guatafi," which is believed to be the root word of Umatac. The village's population has decreased since the island's 2000 census.Nearby (4.5 km) is Mount Bolanos (368 m or 1,207 ft), the 3rd highest peak of Guam.