Is it hot in September?

The weather is still hot in September, although it is declining, but it is in the autumn tiger period.

It is cool in the morning and evening, and exposed to high temperature in the afternoon. In meteorology, autumn tiger refers to the weather above 35℃ after a short period of heat recovery after lodging for three days. It usually happens between August and September. The weather is characterized by cool in the morning and evening and high temperature exposure in the afternoon.

What caused the autumn tiger to form?

The reason for the formation of autumn tiger is that the western Pacific subtropical high that controls China gradually moves southward in autumn, but moves northward. Under the control of this high pressure, it turned cloudy and sunny locally, with strong solar radiation and rising temperature. This regenerative weather is called "old woman summer" weather in Europe and "Indian summer" weather in North America. Beginning of autumn just now.

"Autumn" includes beginning of autumn, Chushu, Bailu, Autumnal Equinox, Cold Dew and First Frost. After autumn, the rain is decreasing day by day, and the air humidity is lower than the limit needed by people's life (the relative humidity is 70%), so the weather is dry, the vegetation withers and people feel dry. ?