Why is the weather in Sanya so good?

Sanya is a tropical coastal tourist city and does not develop industry, so the air will not be polluted. Sanya has a unique climate, located at low latitudes, and is greatly influenced by maritime climate, belonging to tropical maritime monsoon climate, which is cool even in summer. The annual average temperature in Sanya is 25.4℃, the highest in July, with an average temperature of 28℃. The annual sunshine time is more than 2563 hours; The average annual rainfall is1279mm. The four seasons here are like summer, so it can be said that there is no frost and snow in three winters, and bloom is always there in four seasons, which is known as "Hawaii of the East".