I'm going to Hainan on the 28th. What clothes should I wear for the weather in Haikou and Sanya in the next few days?

It's summer in Hainan, so just wear summer clothes. The temperature difference between morning and evening is ok, unlike it was a little cold a while ago. During this period, the temperature should not change much. If you come here, take a coat. Traveling around is sure to be hot, summer clothes are suitable, and swimsuits should be used. If you come here, you must swim or soak in hot springs.