Koh Chang Or commonly referred to as Koh Chang in Trat Province, which is the eastern border of the country. Koh Chang is the largest one in the Gulf of Thailand. And is the second largest island in Thailand after Phuket Island itself. Characteristics of the formations of the islands over 52 islands shaped like elephants marched, making this island called "Koh Chang" We can travel to the island throughout the year. But the season is considered here. This will no doubt be a subtropical climate.