Laem Son was officially announced as a National Park on August 19, 1983. It is perched across a gigantic area of approximately 315 squared kilometers. The area is stretched from the seaside location from the District of Ratchakrud to the southern Districts of Ka Per, Bang Hin, Naga, Suk Sam Raan in Ranong to the District os Kura and Kuraburi in Panga. Various islands in the Andaman sea such as Kang Kao island and Kum island are also part of the national park. The summer (May to August) is among the best time to visit the area.