Why is it colder in winter in the north than in the south?

In winter, the north is farther away from the sun.

In winter, the direct point of the sun moves south to the tropic of Capricorn, and then turns back to the north. In the northern hemisphere, winter is the coldest season, and even the temperature in temperate zone may drop below 0℃. In winter, there will be snowfall in many places, and the snow and ice in most parts of the north will not melt until spring.

Cold air is generally at high latitudes, and the north is close to the cold air area. The north is short of water. Physically speaking, the specific heat capacity of water is relatively small (that is, absorbing 1 can release more heat). The north of China is short of water, while the south is rich in water resources. The north is located at high latitude, and the sunshine is not as good as that in the south.

Extended data:

Although the temperature in the north is very low, the humidity is very low, and the skin sensitivity of pedestrians is also small; Moreover, there is often the sun during the day, and pedestrians can absorb heat from the light. In the humid and rainy weather in the south, water molecules in the air are adsorbed on the surface skin of the human body, and the evaporation process will take away the heat of the human body.

The cold in the south and the north is different. There is little temperature difference between indoor and outdoor in the south, and it is very cold indoors in winter. Indoor and outdoor in the north are simply two different worlds, and wearing a thin sweater indoors is just right. The north is dry, while the south is wet. The higher the air temperature, the stronger the air thermal conductivity.