What is the lowest temperature in Sanya in recent 30 years?

The lowest temperature in Sanya in recent 30 years is 2008. According to the relevant public information, the coldest winter year in Hainan in recent 30 years belongs to the winter of 2008, when the weather was the coldest, reaching two or three degrees below zero. That year was also the coldest year in China, and trees were hung in many places.