September · China
Best time to visit Nanjing in September Weather, crowds & prices
Weather in Nanjing in September
Average temperature 25°C, 126 mm of rain, about 13 days with 6+ hours of sunshine and 78% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
5.5/10
Ranked #7 of 12 months
- Avg temp
- 25°C
- Rainfall
- 126 mm
- Humidity
- 78%
- Days with 6h+ sun
- 13
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Nanjing scores 5.5/10 for sightseeing and cultural travel - ranked #7 of 12. Expect around 25°C, 126 mm of rain, and roughly 13 days with 6+ hours of sunshine this month.
Nanjing is a former Chinese capital on the Yangtze, known for Ming walls, plane trees and its memorials.
September in Nanjing: mixed conditions, plan around the weather
At 25°C (77°F) this is comfortable city weather in September, with sightseeing easiest before lunch and after the afternoon peak.
126 mm of rain signals a properly wet month, with only about 13 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 5.5/10 on the same scale — 7th of 12 months, versus 8.5/10 for the best month here.
Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella.
Budget for mid-season pricing, and crowds are moderate.
If your dates are flexible, May is materially better in Nanjing — 3 points higher on the same scale.
Frequently asked
- What is the weather like in Nanjing in September?
- In September, Nanjing averages 25°C, 126 mm of rain, and about 13 days with 6+ hours of sunshine. Its climate-comfort score is 5.5/10.
- Is September a good time to visit Nanjing?
- September earns a 5.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Nanjing in September?
- Expect about 126 mm of rain in September. Average humidity is 78% and there are about 13 days with 6+ hours of sunshine.
Curated in Nanjing
Tickets & experiences
Things to do in Nanjing
Nanjing, China. Live activities and tours from GetYourGuide, matched to this destination.