52 islands of Moo Koh Chang is like the bar blocking Trat province against the storm. Thus, Trat climate is constantly tropical all year-round and never be harmed. But Koh Chang itself is rained by the South-Western monsoon from Thai Gulf between May-October. However, the rain is seasonal and not strong that traveling is stopped. The ferries till operate daily service. But snorkeling & diving is precaution. The weather turns cool & pleasant with warm sunshine between November-February (High Season). The sky is open the water is clear inviting all visitor to enjoy water sports or leisure.

Month Average High (?c) Average Low (?c) Average Rain (mm)  January 32.4 17.3 10.5  February 32.8 23.35 26.5  March 33.7 22.2 65.9  April 33.9 21.8 171.8  May 34.5 21.8 435.7  June 33.3 22.9 986.4  July 33.2 23.1 1392.4  August 32.7 22.2 564.4  September 32.8 22.6 859.1  October 34.2 22.3 117.6  November 34.5 22.9 139.4  December 33.5 21.8 83.3