Go to Hainan the day after tomorrow and stay for about five days. What clothes should I wear to Hainan this season?

I come from Hainan. At present, you can wear T-shirts or long sleeves with thin autumn clothes. I can spend the whole day. Nothing else. In two days, the temperature will drop to 13- 15. So you can change the thin coat into a windproof one. That's basically it. Don't worry about the sun. It's just a little sunny at noon Haikou is basically.