Geography knowledge: Why is July and August hotter than June?

First of all, the phenomenon you mentioned is the climate characteristics of the northern hemisphere. In the southern hemisphere, the situation is just the opposite.

Secondly, since the winter solstice, the direct sunlight has moved from 23.5 degrees south latitude to the north. The heat gained in the northern hemisphere is increasing. On the summer solstice (June 2 1 or 22), the direct sunlight reaches 23.5 degrees north latitude, and the solar radiation in the northern hemisphere reaches the maximum.

But it doesn't mean that the ground temperature is the highest when the solar radiation quality is the largest. Because the warming and cooling of the earth have a cumulative process, according to the situation in our country, it is generally from summer to one month later that the ground temperature can reach the maximum, so we feel that July is the hottest. Similarly, the solar radiation value obtained from the winter solstice in China (65438+February 2 1 or 22) is the smallest, and we will feel the coldest in 65438+1October.

The above is the general situation. Affected by topography, landforms, land and sea location and other factors, there are still great differences in various places. Take Kunming as an example, its hottest month is in May every year. July is very cool, so it is a summer resort.