What was the weather like in Haikou and Sanya from June 5438 to February 2009?

Haikou is colder than Sanya. You may need to bring a thicker coat. It will be windy at night. Sanya is still a little cold at seven or eight in the morning, and it will be very hot at noon. We all wear short sleeves, and it is windy in the afternoon and at night. We need to add coats. It's best to bring your own cold medicine to avoid being hot and cold ... by the way, just wear jeans for our pants.