Which is hotter, Wenshan in Yunnan or Guangdong?

According to the average temperature, the climate in Guangdong is hotter than that in Yunnan. Yunnan belongs to the plateau mountainous area, with spring-like climate all year round, and the annual average temperature is about 16℃. Guangdong has a coastal monsoon climate, with a long summer and a short winter, with a temperature above 30℃ in summer and the highest in July. The lowest temperature in winter is about 4℃, usually around the Spring Festival. The average temperature is above 20℃, which is higher than that in Yunnan. So Guangdong is very hot when it is hot.