What are the climate characteristics of the autumnal equinox?

The climate characteristics of the autumnal equinox include gradually lowering temperatures, dry weather, large temperature differences between morning and evening, reduced rainfall due to the influence of monsoon, and cold air moving southward.

1. The temperature gradually decreases

With the arrival of the autumnal equinox, the temperature gradually drops, and the temperature difference between day and night gradually increases. The amount of direct sunlight on the ground is reduced during the day, and the temperature drops significantly at night. The average temperature in most areas begins to gradually drop, and people feel the coolness of autumn.

2. Dry weather

During the autumnal equinox, the temperature drops, the water vapor content in the air is low, the relative humidity is relatively small, and the air is relatively dry. At this time, you should pay attention to moisturizing, drink more water, apply more moisturizing cream, etc.

3. The temperature difference between morning and evening is large

During the autumnal equinox, the direct sunlight time on the ground decreases during the day, and the temperature drops significantly at night, resulting in an increase in the temperature difference between morning and evening. When you get up in the morning, the temperature is lower and you feel cooler; when you go to bed at night, the temperature is lower and you need to cover yourself with a thicker quilt. People should pay attention to the temperature difference between morning and evening during the autumnal equinox, and add or remove clothing in a timely manner.

4. Affected by the monsoon

At the autumnal equinox, the monsoon gradually weakens, the heavy rains in summer gradually decrease, and the weather becomes more stable. In the southeastern coastal areas of my country, the climate at the autumnal equinox is characterized by clear weather and suitable temperatures; while in the northern region, the climate at the autumnal equinox is characterized by lower temperatures, large temperature differences between morning and evening, and dry weather.

5. Rainfall decreases

During the autumnal equinox, the rainfall in most areas gradually decreases and there is less rain. This is because the monsoons are gradually weakening, heavy rains are decreasing, and the climate is starting to dry out.

6. Cold air moves south

On the autumnal equinox, the sun is located at 180 degrees of ecliptic longitude. The sunlight almost shines directly on the equator, and the day and night are almost equal in length. At this time, the temperature in the south generally drops below 22°C, entering a cool autumn. "One autumn rain and one cold day." Streams of cold air heading south meet the gradually attenuating warm and humid air, causing rainfall and temperature drops again and again.

Reference for the above content: Baidu Encyclopedia-Autumnal Equinox