Which time of day is the coldest

Among the four seasons of the year, winter is the coldest, which is common knowledge known to everyone. But if we shorten the time, do you know when is the coldest time of the day? Some people may say it is in the evening or at night, because generally speaking, the temperature at night is very low. Some people say it is in the morning, because the sun has not yet come out and the temperature in the air has not risen. So when is it?

The temperature difference during a day is actually very large, especially in mountainous areas or inland areas. Perhaps you have never noticed when it is the hottest or coldest time of the day. Here is a detailed introduction for you.

When is the coldest time of the day? Morning, of course. Do you know why? It's not just because the temperature in the morning is usually the lowest during the day. In fact, the feeling of cold or warmth that people have is closely related to the relative difference between body temperature and ambient temperature. Just like the ambient temperature, human body temperature also has a changing pattern of being high during the day and low at night, but these two changes are not synchronized. The body's internal temperature changes rapidly, while the air temperature tends to change more slowly. This makes the difference between body temperature and air temperature larger in the morning and evening and smallest at noon.

In the morning, body temperature begins to rise rapidly, while the temperature of the external environment rises relatively slowly. At this time, the body's temperature rises and becomes extremely sensitive to external cold stimuli and feels the coldest, especially in cold seasons. After dusk, body temperature drops rapidly, while the temperature outside continues to drop slowly. This is when you will feel the warmest. In the afternoon, although the temperature is the highest, the change in body temperature is almost the same as the ambient temperature, so it is not the hottest time.

When is the coldest time of the day? You should know the answer now. Generally, the temperature in the morning is the lowest in the day, so everyone must remember to add clothes when going out in the morning to prevent catching a cold. Of course, the temperature at night is also very low, it is just slightly higher than in the morning. I hope the above information is helpful to you.