Laem Son National Park's most accessible beach is the gorgeous 3km white sweep of Hat Bang Ben, backed by casuarinas and host of the park headquarters and accommodation. To the south peninsulas jut out into the ocean concealing isolated coves accessible only by long-tail. All of the beaches are said to be safe for swimming year-round.
From Hat Bang Ben, you can see several islands, including the nearby Ko Kam Yai, Ko Kam Noi, Mu Ko Yipun, Ko Khang Khao and, to the north, Ko Phayam. If there's a prettier sunset picnic spot on the north Andaman coast, we haven't found it.