Why is the weather in Wuhan like this?

Wuhan belongs to the northern subtropical monsoon humid climate zone, which is characterized by abundant rainfall, sufficient sunshine, and four distinct seasons. Throughout the year, the average temperature in January is the lowest, 1°C; the average temperature in July and August is the highest, 28.7°C, and the summer lasts for 135 days. Because Wuhan is located at 30 degrees north latitude, the height of the sun at noon in summer can reach 83 degrees. It is located inland and far away from the ocean. The surrounding terrain is like a basin, which is easy to collect heat but difficult to dissipate. There are many rivers and lakes, and there is a lot of water vapor at night. In addition, the urban heat island effect and late drought The subtropical high is under control, so the urban temperature can reach a maximum of 42°C, which is very sultry and is one of the three hottest stoves in China. Rainfall is relatively concentrated during the plum rainy season in early summer, with annual precipitation ranging from 1,050 to 1,200 mm. The active accumulated temperature in Wuhan is between 5000℃ and 5300℃, and the annual frost-free period is 240 days.