What's the temperature in Hainan Island?

Hainan Island is located in the northern edge of the tropics and belongs to the tropical monsoon climate. It has always been known as a "natural greenhouse". There is no winter, and summer is very long. The annual temperature in Hainan is 23.8℃, with the lowest month 1 to February, the average temperature 18℃, and the highest month from June to July, with the average temperature above 27.7℃ and the highest temperature around 38℃. Seawater temperature The annual average seawater temperature is 26℃.