What's the weather like in Hainan in early April? Will it be hot? What do you need to bring?

Now the weather has entered a better season, neither too hot nor too cold, suitable for swimming in the sea, and there is little rain. It is mainly sunny, and you can wear short-sleeved summer clothes. It is no problem to go to the seaside. You can buy some bright clothes in the first market in Sanya, which is very effective.