Why is the climate cool in Guiyang?

Guiyang belongs to subtropical humid and mild climate.

Guiyang is a plateau area with low latitude and high altitude. The city center is located near east longitude 106 degrees 27 minutes and north latitude 26 degrees 44 minutes, with an altitude of about 1 100 meters. Located in Faidel circulation circle, it is controlled by westerlies all the year round, and belongs to subtropical humid and mild climate with plateau and monsoon climate characteristics. The annual average temperature in Guiyang is 15.3℃, the annual extreme maximum temperature is 35. 1℃, and the annual extreme minimum temperature is -7.3℃, with the hottest average temperature in late July being 24℃ and the coldest average temperature in early July being 4.6℃. The annual average relative humidity is 77%, the annual average total precipitation is 1 129.5 mm, the annual average cloudy day is 235. 1 day, the annual average sunshine hours are1/48.3 hours, and the annual average snowfall days are only1/.

Especially in summer, the average summer temperature in Guiyang is 23.2℃, the highest temperature is 25-28℃, and the lowest temperature is 17-20℃. There are few days when the maximum temperature is higher than 30℃, and the ultraviolet intensity is weak. Even if there is a temperature of 30℃, it will be cool in the morning and evening. As long as it is not exposed to the hot sun, the room is well ventilated and there is no air conditioning equipment. Compared with some cities in the north and cities in neighboring provinces, such as Chongqing, Guiyang is a veritable summer resort. Among the "Top Ten Summer Tourist Cities in China" in 2006, Guiyang topped the list with the advantage of average temperature comfort in summer, especially in the hottest month. Among the eight hard indicators of seven organizations, including the United Nations Asia-Pacific Organization, Guiyang's climate comfort occupies a large proportion.

Guiyang has abundant rainfall in summer, about 500 mm, and the nighttime precipitation accounts for 70% of the annual precipitation, which is not obvious in dry and wet seasons. Guiyang's heavy industry is basically far away from the urban area, with light pollution in the urban area, few days of light pollution throughout the year, good air quality, no smog weather and fresh and pleasant air.

The average number of lightning days in Guiyang is 49. 1 day. Lightning will electrolyze water vapor in the air and produce more negative oxygen ions. At the same time, Guiyang has a forest belt around the city with complete vegetation, and is known as the "forest city". The forest belt around the city provides abundant negative oxygen ions. The negative oxygen ions in the air of scenic spots are high, with an average of more than 2700 per cubic centimeter, which is several times higher than the normal value and ranks among the best in all famous scenic spots in China.

I hope it helps you. Good luck!