In which season does the thunderstorm weather mainly appear in Guangzhou?

China is a country with obvious monsoon climate, and the seasonal distribution of precipitation varies greatly. Heavy rain and torrential rain often occur in this season, and its precipitation accounts for about 70% of the total amount of the year. Therefore, the rainy season is also obvious, which is easy to cause floods, so it is also called the flood season. On a large scale, the rainy season is generally from April to September in the south and from June to September in the north. The difference between before and after is 2 or 3 months. The rainy season ends early in the north and late in the south, with a general difference of only about 20 days.