Beijing entered autumn on September 13th this year, the earliest since 2020.

The latest news from the Beijing Meteorological Bureau shows that based on temperature monitoring data, the average temperature in the sliding sequence has been below 22 since September 17, 2025, and it reached below 22 for 5 consecutive days on September 21. The first date in the average temperature sequence below 22 was September 13, corresponding to the usual autumn arrival date of September 13. Based on this judgment, the autumn arrival date in Beijing for 2025 is September 13, which is the earliest since 2020.