Is the weather in Yunnan good in September?

Very good.

1. It is cooler in the morning and evening, so wear long-sleeved clothes and short-sleeved clothes at noon. September should be the most comfortable season of the year in Yunnan.

2. Although Yunnan is said to be like spring all year round, it only applies to certain cities, not all. In previous years, Kunming, the provincial capital, was neither cold nor hot in September, around 20 degrees Celsius. It would be colder in the morning and evening and if it rained, so outerwear was still needed. If you are not going to Kunming but somewhere else, you can check the weather forecast for the week before you go. For example, it will be colder in Lijiang and hotter in Yuanyang Terraces.

3. Yunnan’s latitude and altitude are related. In terms of latitude, its location is only equivalent to the geographical latitude from Leizhou Peninsula to Fujian, Jiangxi, Hunan and Guizhou. However, due to the terrain being higher in the north and lower in the south, the height difference between the north and the south is as high as 6663.6m, which greatly aggravates the problems within the province. Temperature differences caused by latitude factors. This combination of high latitude and high altitude, low latitude and low altitude is consistent, that is, the increase in latitude in the horizontal direction coincides with the increase in altitude in the vertical direction. As a result, the annual average temperature in various places, except for the Jinsha River Valley and Yuanjiang River Valley, generally increases from north to south. The average temperature is about 5 to 24°C, and the temperature difference between the north and the south is about 19°C.