Why is it so hot in July?

The hottest time of the year usually occurs in the dog days from summer to Sunday.

"Three volts" refers to the first, middle and last three volts, which is about mid-July to mid-August. After the summer solstice, although the days are getting shorter and the nights are getting longer, the days are longer than the nights in a day. Every day, the ground absorbs more heat than it emits, and the temperature near the ground is getting higher every day. During the "three volts" period, the heat absorbed by the ground is almost less than the heat emitted, and the weather is the hottest. After that, the heat absorbed by the ground began to be less than the heat emitted by the ground, and the temperature gradually decreased. Therefore, the hottest time of the year generally appears in the "dog days" from the summer solstice.

The summer solar term is the hottest solar term in a year. The ancient book "Twenty-four solar terms" said: "It is extremely hot in the summer." This is enough to explain the fiery degree of this solar term. The reason why it is extremely hot during the "Great Summer" is that since the beginning of summer, the heat absorbed from the ground sun during the day is more than that emitted at night, and the heat keeps accumulating. During summer, accumulated heat reaches its peak, so summer is the hottest.

Fu Tou, Er Fu, crosses the high temperature in summer, which is usually the hottest day of the year; Although it is already beginning of autumn in dog days, it is still very hot, so it is also called "autumn tiger". Because the first, second and third days are very hot, it is called "third day fever".

The summer heat is the twelfth solar term in the twenty-four solar terms of the lunar calendar. "Twenty-four solar terms" said: "Summer heat can be divided into different sizes, with the beginning of the month small and the middle of the month large, which is still hot today." Summer is the hottest, but I definitely don't think it's so hot. It's just the surface, but it's hot inside, so it's cool to be calm.

!