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Nanjing Weather by Month
Average temperatures, rainfall and humidity for Nanjing, China, month by month, built from OpenWeather’s historical records. Use it to see what a typical Nanjing month looks like before you travel — then check the live Nanjing forecast for the days ahead.
Warmest month
August
33°C average high
Coolest month
January
1°C average low
Wettest month
October
115 mm of rain
Driest month
December
22 mm of rain
Average temperature and rainfall in Nanjing by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 9°C | 1°C | -11°C / 21°C | 29 mm | 69% | 10 km/h |
| February | 10°C | 2°C | -10°C / 26°C | 28 mm | 71% | 11 km/h |
| March | 17°C | 7°C | -2°C / 33°C | 57 mm | 69% | 12 km/h |
| April | 22°C | 12°C | 1°C / 34°C | 62 mm | 68% | 12 km/h |
| May | 27°C | 18°C | 8°C / 37°C | 59 mm | 69% | 12 km/h |
| June | 30°C | 22°C | 15°C / 38°C | 87 mm | 75% | 11 km/h |
| July | 33°C | 25°C | 18°C / 41°C | 89 mm | 79% | 11 km/h |
| August | 33°C | 25°C | 6°C / 41°C | 57 mm | 77% | 10 km/h |
| September | 29°C | 21°C | 12°C / 37°C | 82 mm | 78% | 10 km/h |
| October | 23°C | 15°C | 5°C / 40°C | 115 mm | 73% | 10 km/h |
| November | 17°C | 8°C | -5°C / 30°C | 30 mm | 70% | 10 km/h |
| December | 10°C | 2°C | -8°C / 23°C | 22 mm | 66% | 9 km/h |
Best time to visit Nanjing
The most comfortable time to visit Nanjing is generally April to May and October, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around October, totalling about 717 mm a year.
Travellers who prefer heat should aim for August, when highs average 33°C. October is the month to avoid if rain would spoil your plans — it averages 115 mm, roughly 5× the rainfall of the driest month (December).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Nanjing forecast for what is happening now.