September could be a good time to visit Nanjing, as the weather is generally fine. The average high temperature is around +27°C, and there are typically 6 sunny days in September. However, expect about 14 rainy days, and total monthly rainfall of approximately 107 mm. The weather is changeable so pack for every eventuality. Search flightsin one click on Avionero.
Average weather
☀️
+27°C
Avg. max. temperature
+11°C
Min.
+37°C
Max.
107 mm
Total precipitation
80%
Avg. humidity
2 m/s
Avg. wind
6 ☀️
Sunny Days
11 ⛅️
Cloudy
14 🌦
Rainy
Our opinion: Nanjing has OK weather in September.
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Average temperature in Nanjing in September
Here are the expected maximum, average and minimum temperatures in Nanjing for September based on the historical data.
Last Year
Historical Data
The expected average maximum temperature in September is +28°C with a maximum of +33°C and a minimum of +18°C.
The average maximum temperature goes down 33% by the end of the month, compared with the beginning of the month, from +29°C to +24°C.
Is Nanjing warm or cold in September?
Nanjing is typically warm in September.
Maximum temperatures go down compared to the previous month from +31°C to +27°C. The minimum temperature also goes down from +25°C to +20°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in Nanjing:
Climate in Nanjing in September
Nanjing weather looks like this, on average, in September and the surrounding months.
August
September
October
Avg. temperature
+31°C
+27°C
+22°C
Min. temperature
+17°C
+11°C
+3°C
Max. temperature
+39°C
+37°C
+39°C
Rainfall
159 mm
107 mm
99 mm
Wind
2 m/s
2 m/s
2 m/s
Humidity
81%
80%
76%
Air pressure
1005 HPa
1012 HPa
1019 HPa
Sunny days
3
6
9
Cloudy days
7
11
11
Rainy days
21
14
11
Snowy days
0
0
0
September weather is still as ok as in August.It’s getting colder in September. From +31°C in the day, the average maximum temperature lowers to +27°C.As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 159 mm to 107 mm.It feels drier, as humidity decreases from 81% to 80%.The average wind speed doesn’t change much during September, staying around 2 m/s.The good news is there are likely to be more sunny days in September, from 3 to 6.
October brings much the same weather, it remains ok.
Wind speed in Nanjing in September based on historical data.
Last Year
Historical Data
The average wind speed is 2 m/s getting up to 3 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Nanjing is gradually increasing during September, going from 2 m/s to 2 m/s over the course of the month.
Rain
Amount of rainfall in mm during September in Nanjing based on historical data.
Last Year
Historical Data
Total precipitation in September is about 124 mm, with a 47% chance of rain on a typical day. The maximum amount of rainfall per day is around 38 mm, which is moderate rain.September is a pretty wet month with over 14 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Nanjing wettest month is July, where a typical day has a 71% chance of precipitation and 230 mm of rainfall per day. December, on the other hand, is the driest month with a mere 19% chance of precipitation and 29 mm of rainfall per day.
How was the weather last September in Nanjing?
This is the weather in Nanjing in September 2024:
1 September
☀️
+29°C
2 September
☁️
+30°C
3 September
☁️
+29°C
4 September
🌧️
+29°C
5 September
☁️
+31°C
6 September
☀️
+31°C
7 September
☀️
+31°C
8 September
☀️
+31°C
9 September
☀️
+31°C
10 September
☁️
+30°C
11 September
☁️
+31°C
12 September
🌧️
+26°C
13 September
☁️
+23°C
14 September
☁️
+25°C
15 September
🌧️
+25°C
16 September
☁️
+29°C
17 September
☁️
+31°C
18 September
☁️
+33°C
19 September
☁️
+32°C
20 September
🌧️
+24°C
21 September
☁️
+22°C
22 September
☁️
+22°C
23 September
☁️
+19°C
24 September
☁️
+22°C
25 September
☁️
+26°C
26 September
☁️
+27°C
27 September
☁️
+28°C
28 September
☁️
+28°C
29 September
🌧️
+28°C
30 September
☁️
+24°C
In September 2024 Nanjing had 5 sunny days, 20 cloudy days, and 5 rainy days. The average maximum temperature was +28°C, with an absolute maximum of +33°C and a minimum of +19°C. The average humidity was 86%, with a maximum of 100% and a minimum of 51%. The average wind speed was 2 m/s, with a maximum of 5 m/s and a minimum of 0 m/s.
Are you planning a trip in September?
Climate Change over Years
This is how Nanjing climate have been changing during last 43 years period.
The climate in Nanjing in September has not changed much over the last 43 years.
The average temperature was the lowest in 1980 (+19°C) and the highest in 2019 (+23°C). The driest year was 2019 with only 819 mm of rainfall, and the wettest year was 2020 with 4430 mm.
FAQ
Frequently asked questions about the weather in Nanjing in September:
Is September a good time to visit Nanjing?
It’s always a good time to visit Nanjing, but the weather is changeable in September, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in Nanjing in September?
September is warm in Nanjing. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.
Is Nanjing rainy in September?
Nanjing is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Nanjing in September?
Usually, it’s not very sunny in Nanjing in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in Nanjing, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
