Are there any cities in Chinese mainland that are almost cloudy or often rainy all year round?

Yes The most typical ones are Chongqing and Guiyang.

Chongqing is a livable city with mild climate and subtropical monsoon humid climate. The annual average climate is about 18℃, the average minimum temperature in winter is 6-8℃, the summer is hot, and the daily maximum temperature in July is above 35℃. The maximum extreme temperature is 43℃ and the minimum is -2℃. The total sunshine hours are 1 0,000-10,200 hours. It is warm in winter and hot in summer, with a long frost-free period and abundant rainfall. Annual rainfall 1 0,000-1450 mm, especially at the turn of spring and summer. Therefore, there is a saying of "late rain". Chongqing is foggy and is known as the "foggy city".

Guiyang is about 1 100 meters above sea level, and is located in the Feider circulation circle. Controlled by the westerly belt all the year round, it belongs to the subtropical humid and mild climate. Annual average temperature 15.3℃, annual extreme maximum temperature 35. 1℃, annual extreme minimum temperature -7.3℃, and annual average relative humidity 77%. Annual average total precipitation 1 129.5mm, annual average lightning days 49. 1 day, annual average cloudy days 235. 1 day, annual average sunshine hours 1 148.3 hours, and annual average snowfall days.

There is no scorching summer in Guiyang, with an average summer temperature of 23.2℃ and a maximum temperature of 25-28℃. In the hottest late July, the average temperature was only 23.7℃, and the days when the highest temperature was higher than 30℃ were few, with an average of only 35.8 days in recent five years and only 0.3 days higher than 35℃. The intensity of ultraviolet rays only reaches level 4 in a short time at noon, and the rest time is very weak or weak; Summer rainfall is abundant, about 500 mm, and nighttime precipitation accounts for 70% of the annual precipitation. There is no severe cold in winter in Guiyang, the coldest is 1 the beginning of the month, with an average temperature of 4.6℃.

Compared with Guilin, Chongqing and Guiyang have much more rainy and cloudy days. The lighting conditions in Chongqing and Guiyang are poor, while Guilin has plenty of light. Guilin is located at low latitude and belongs to subtropical monsoon climate. The territory has a mild climate, abundant rainfall, long frost-free period, abundant sunshine and abundant heat.