Ugi Island is a raised coral reef about 10.5 km long and 6.5 km wide. The island has an area of 43.98 km2 and the highest elevation is 160 metres (520 feet). The island has a pleasant climate and good beaches.
At the census of population on November 23, 2009, the island had a population of 1,212. Most people live next to Selwyn Bay on the western side of the island. The principal village is Pawa, located at Selwyn Bay on the west coast. Archaeological evidence has demonstrated continuous occupation of the island since 1470 AD.[3] The All Hallows' (senior primary) boys' boarding school was established at Ugi Island on 9 June 1922 by the Diocese of Melanesia as a replacement for St. Barnabas' School on Norfolk Island. What was left of the school was operated as a Diocese of Melanesia primary school until it was handed over to the Solomon government in 1975 to become a provincial secondary school.[4]