Hi, how to go from Haikou airport to Ramada Sanya Hotel. How is the weather in Dec

At Haikou airport, you can find Meilan railway station, where you can take the bullet trains to reach Sanya directly. Upon reaching Sanya Railway Station, you can find the local public bus line 4, so take this line to reach Shuilin Mansion. There you can take a taxi to reach your hotel directly.
The average temperature is around 22 to 30C.