What's the temperature in Hainan in early February?

Are you going to travel to Hainan in February? The temperature should be around 20 degrees at that time? Hainan is in the subtropical zone, where there is no difference between cold and summer, but when you go there, it is definitely not as hot as summer. It's humid there, and the temperature difference between morning and evening is large. If you go to play, you'd better bring another coat, or pants, shirts and the like. In case of coat, you can get ready when you go out! Sanya, where the temperature is the most suitable, can wear a vest and sandals during the day. You can also wear it when you get there, which is convenient for playing in the water.