Nanjing weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Good
Best time to visit: April – May, September – November
What is the weather like in Nanjing in September?
In September, Nanjing is hot: daytime highs average 27 °C, and even at night it stays warm at around 20 °C. Expect around 6 hours of sunshine a day. Rain falls on about 9 days, adding up to 85 mm. On about 6 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a good month for a holiday in Nanjing.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 43 | 75 | 82 |
| Day | 31° | 27° | 22° |
| Night | 25° | 20° | 14° |
| Sun | 6 h | 6 h | 5 h |
| Rain days | 14 | 9 | 7 |
More details for September
- Daylight
- 12 h 25 min05:48 – 18:13
- UV index
- 8 · very highclear sky, noon (estimate)All months
- Muggy days
- 20 daysdew point 18 °C or moreAll months
- Wind
- 14 km/haverage daily peakAll months
- Cloud cover
- 57 %on averageAll months
- Hot days
- 6 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+8Asia/Shanghai
How the score comes together
- Temperatureweight 50 %95 %
- Sunshineweight 20 %42 %
- Few rainy daysweight 30 %65 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Nanjing in September: quick answers
Is Nanjing hot in September?
Yes. In September, Nanjing is hot: daytime highs average 27 °C and nights stay around 20 °C. On about 6 days the thermometer climbs to 30 °C or more.
Does it rain much in Nanjing in September?
Rain falls on about 9 days, adding up to 85 mm.
Nanjing month by month
The whole year in NanjingAll destinations: ChinaWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences