Welcome to our Parish! Saint Raphael Catholic Church in Koloa is a parish of the Roman Catholic Church of Hawaii in the United States. Located in Koloa on the island of Kauai, the church falls under the jurisdiction of the Diocese of Honolulu and its bishop.The oldest Catholic Church in Kauai, St. Raphael's was founded in 1841; two years after Catholics were granted religious freedom in Hawaii. Father Arsenius Walsh established the parish. The first stone chapel was built by Father Walsh in 1842. In preparation for the Centennial anniversary in 1941, the Chapel sanctuary was rebuilt by parishioners.