Polihale Beach is at the beginning of the NaPali Coast. It is not easy to get to, and therefore not as busy. You must take a dirt road (in nice weather conditions) for about 4 1/2 miles until you can get to the beach. You take it for about 3 miles until you come to a monkeypod tree. At the monkeypod tree, take a right and go about another 1 1/2 miles. There are very large sand dunes. The easiest access point by car is to find the camping area where you can drive you car close to the beach. You can also see the Forbidden Island of Ni'ihue from Polihale Beach.
From journal Hawaii