Why is the weather in Nanning so humid?

The weather in Nanning is because the weather in Nanning now has a southerly wind and it is normal to be humid. The same is true for Guilin. When the weather becomes clear and the wind direction turns north, it will get better and the water vapor will sink. Real time: 22°C, southerly wind less than level 3, humidity: 84% today (Saturday) 17/22°C light rain tomorrow (Sunday) 14/27°C cloudy the day after tomorrow (Monday) 12/24°C showers turning cloudy 2010 Updated at 18:00 on March 13th