Guilin Weather in September

Season: Transitional Period from Summer to Autumn 
Overview:
1. Guilin’s weather in September is relatively hot overall, but by late month, the temperature eases a bit. Morning and night hours tend to be cooler, perfect for outdoor sightseeing. 
2. September experiences low rainfall, and the river visibility is pretty high, so you can enjoy a stunning river view. 
3. September is one of the best times to visit Guilin, combining a relatively pleasant climate and small visitor numbers. But it’s best to avoid weekends and the Mid-Autumn Festival Holiday.

Hot Temperatures around Noon

Generally, Guilin in September still feels a bit hot. The first half of the month carries leftover summer heat: high temperatures above 35°C (95°F) remain common, especially during sunny spells, and the peak temperature can even reach as high as 38°C (100°F). By the end of the month, cooler air masses bring some relief, with daytime highs ranging from 27 to 34°C (81-93°F), making outdoor exploration more comfortable. 

Fortunately, it’s good to know that the heat won’t last for long per day and temperatures drop rapidly after sunset, with nighttime lows of 22-26 degrees Celsius (72-79 degrees Fahrenheit). Thus, night walks along the river become quite enjoyable. 

If you are sensitive to hot temperatures, the weather in mountainous areas is several degrees lower than in urban areas, making them worth visiting. 
 Guilin’s rainfall in September decreases substantially compared with summer, with an average total of 82 mm from 8 rainy days. Rain this month is usually brief and does not last all day. After rain, the mountain and river scenery become especially attractive. Mist rises between limestone peaks, and river valleys appear soft and layered, which is perfect for photography. 

Typhoons rarely have a direct impact on Guilin. In certain years, outer circulation bands may bring strong rainfall, gusty winds, and thunderstorms. Therefore, checking official weather alerts remains important during this peak typhoon season. 
 Humidity in September remains relatively high, with the average level of 73 %. Sometimes after rainfall, the air can feel steamy and sticky. Even on dry days with high temperatures, moisture in the air may make you sweat quickly during outdoor activities. Staying hydrated and taking short indoor breaks during hotter periods is quite important. 

Guilin River View in September

 With fewer rainy days, sunshine hours increase gradually, averaging 6 hours per day. Particular attention should be paid to ultraviolet intensity, as UV rays begin to become intense from 10:00 and reach the peak UV index of 10. Sun protection is necessary even on partly cloudy days. 

Although there are about 12 hours of daylight, actual comfortable sightseeing time is shorter due to midday heat. A smart schedule improves the experience significantly: 
(1) Arrange outdoor activities from 7:00 to 11:00 and after 16:00 to avoid the heat. 
(2) Visit indoor attractions such as the Guilin Museum or limestone caves like Reed Flute Cave and Seven Star Cave during the hotter 11:00-16:00. 
(3) Check the exact sunset time and take a raft along the Li River. 

Peaceful Sunset River View

 

Taking Bamboo Rafts at Li River

Of course, yes! September is a rewarding time to enjoy Guilin's charm. 

First, Guilin’s September climate is sunny, perfect for outdoor sightseeing. As for the temperatures, with a relatively large temperature difference between day and night, you can still experience many cooler moments though the daily highest temperatures are a bit high sometimes. Second, landscapes remain lush, rivers are clear and peaceful, and the autumn scenery at Longji Rice Terrace is at its most beautiful. Third, September is an off-peak travel season, and Guilin sees fewer visitors, especially on weekdays. Plus, travel costs are quite reasonable.