20 1 1 1 5 will go to Haikou, Sanya and other places in Hainan to ask about the weather and what clothes to wear.

Haikou is much colder than Sanya, because Sanya belongs to the tropics and Haikou belongs to the subtropical edge. Haikou is colder at this time. Those who are afraid of cold wear long-sleeved trousers and long-sleeved coats. If the temperature drops suddenly, you can even put on a sweater. Sanya is not that cold, just wear clothes and pants. When the weather is warm, you can wear short sleeves and shorts to swim in the sea at noon. It is recommended to go to Sanya for honeymoon, because there is nothing interesting in Haikou and the sea is not very blue. Sanya is very beautiful.

From the north, just bring some spring and autumn clothes, pants and short sleeves. If the temperature drops, just put on the clothes in the north.

Take some sunscreen, because the ultraviolet radiation in Sanya Beach is still very strong. Take an umbrella for sun protection in sunny days, and take an umbrella for rain protection in rainy days.

Besides, the law and order in Hainan is not very good. No matter what you do, you should ask clearly and find a formal service company. Don't go to too remote places.

Have a nice trip!