Nanjing Weather in September
September in Nanjing brings high temperatures, with highs of 29°C (84°F) and nights dropping to 21°C (70°F). Rainfall is on the higher side this month, averaging around 88 mm (3.5 in), so keep a rain jacket handy.
Rainfall in Nanjing in September
Typically, you can expect about 11 days of rain this month, with 88 mm (3.5 in) on average. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Nanjing in September
The temperature in Nanjing in September is perfect. Daytime highs reach 29°C (84°F), with nights dropping to 21°C (70°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With lows of 21°C (70°F), the nights are warm and generally comfortable.
Sunshine in Nanjing in September
The area enjoys a moderate level of sunlight, with around 163 hours. It's a good balance between sunny and cloudy days.If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Nanjing.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit China, check out our Nanjing's climate page.
Nanjing Temperature in September
Min Temperature
21°C (70°F)
Max Temperature
29°C (84°F)
Chance of Rain
37%
Precipitation
88 mm (3.5 in)
Rainy days
11 days
Humidity
78%
Sunshine
163 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Nanjing typically drop from around 30°C (86°F) at the start of September to approximately 26°C (79°F) by the end. Nights are warm, with lows typically ranging from 17°C (63°F) to 23°C (73°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Nanjing in September
Browse day-by-day weather records for Nanjing spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Nanjing historical weather extremes in September
The extremes listed below come from historical weather data collected in Nanjing from 1976 through 2025.
- On September 7, 1995, temperatures climbed to 37°C (99°F), marking the warmest September day on record.
- Nanjing experienced its chilliest September day on September 28, 1982, reaching only 15°C (59°F).
- Nighttime temperatures dropped to 11°C (52°F) on September 29, 2012, marking the coldest September night on record.
Best Places in China in September
Find out more about the weather in China and which places have the best travel conditions in this month. See all of China in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Nanjing in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Nanjing in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit China, check out our Nanjing's climate page.
Temperature Rainfall Sunshine Humidity
See the full Nanjing climate overview or explore weather in China.
