The Mentawai Islands are a chain of about seventy islands and islets off the western coast of Sumatra in Indonesia. Siberut (4,030 km2) is the largest of the islands. The other major islands are Sipura, North Pagai (Pagai Utara) and South Pagai (Pagai Selatan). The islands lie approximately 150 km off the Sumatran coast, across the Mentawai Strait. The indigenous inhabitants of the islands are known as the Mentawai people. The Mentawai Islands have become a noted destination for surfing.
The area referred to as the Mentawai region is more than 70 different islands running northwest to southeast from the equator to four degrees south. Located only 100 miles west of Sumatra, the main islands from north to south are Siberut, Sipura, North Pagai and South Pagai.
These four main islands and dozens of smaller islets are laced with coral barrier reefs and inner beaches making it the most consistent and one of the most popular surf destinations in the world. Situated perfectly to catch an abundance of Indian Ocean swell with reefs facing all different directions creates a situation where there seems always to be at least a few waves in each area working well under any and all wind and weather conditions.