- Apia is the capital and largest city of Samoa, a small island nation in the South Pacific. It is located on the northern coast of the island of Upolu. Apia is home to approximately 37,000 people, making it the most populous urban area in Samoa. The city serves as the economic, political, and cultural center of the country, with government buildings, commercial enterprises, and cultural institutions located here. Apia has a tropical climate, with warm temperatures year-round and a wet and dry season. The city is known for its vibrant markets, colonial architecture, and beautiful waterfront area.