Climatic characteristics of South China in spring

The tropic of cancer often appears in southern spring.

Returning to Nantian is a weather phenomenon in South China. Every spring, the temperature begins to rise and the humidity rises sharply. When "Returning to the South Sky" appeared, the air humidity was close to saturation, and there were wet scenes everywhere. The floor is wet, the walls are flowing, the clothes are dry, and even the quilts and shoes are wet, which not only smells, but also makes them uncomfortable to wear. At this time, it is best to close the doors and windows to prevent warm and humid outdoor air from entering the room, use a dehumidifier or turn on the air conditioning dehumidification mode.

Frost is an agrometeorological disaster that crops will be hurt or even killed when the surface temperature drops below 0℃. Frost will appear in autumn, winter and spring. The first frost in autumn is called the first frost, and the last frost in spring is called the final frost, which has a great influence on crops.