Can I wear summer clothes to Hainan during the Spring Festival?

Hainan is also divided into different places. Some places are warm and some places are cold. The temperature in Sanya is over 20 degrees, but you should bring a coat. The temperature in Haikou and other places is low, so it is estimated that you have to bring sweaters and other autumn clothes. Isn't there ink weather in Ipoh? You can have a look at the weather and dress guides all over the country for a week.