Traditional Culture Encyclopedia - Weather inquiry - Why is the weather in Nanning so humid?

Why is the weather in Nanning so humid?

The weather in Nanning is south, so the humidity is normal, and so is Guilin. If the wind turns north, the water vapor will sink. Real-time: 22℃, southerly wind less than level 3, humidity 84%. Today (Saturday) 17/22℃ It will rain tomorrow (Sunday) 14/.