Is it sunny in Haikou, Hainan?

There are many sunny days in Hainan, and there is also a saying in Hainan that "the cow's head is raining and the oxtail is sunny", and the rain will stop soon. Living in Hainan is really enjoyable. The library in Hainan province is ok, but it is still a little worse than that in the mainland. There are many coconuts and trees. If you stay in Sanya, although the ultraviolet rays are very strong, your mood is meaningless. What can I say? Customs vary from place to place. Because Hainan is engaged in tourism, locals are generally good to foreigners.