Nanjing Weather & Climate: Best Time to Visit

In Nanjing, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a very warm 33°C (91°F) in July to a chilly 8°C (46°F) in January.

Nighttime temperatures range from 26°C (79°F) in July to 0°C (32°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Nanjing experiences significant rain/snowfall throughout the year, averaging 1277 mm (50 in) of precipitation annually. The seasons in Nanjing bring significant changes in precipitation. The wettest month, June, receives heavy rainfall, with an average of 230 mm (9.1 in) of precipitation. This rainfall is distributed across 10 rainy days.

In contrast, the driest month, December, experiences much less rainfall, totaling 36 mm (1.4 in) over 8 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Nanjing Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

In Nanjing, summer days are longer and more sunny, with daily sunshine hours peaking at 6.7 hours in August. As the darker season arrives, the brightness of the sun becomes less. February sees a soft sun for only 4.0 hours per average day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Nanjing.

The city experiences its highest humidity in July, reaching 80%. In April, the humidity drops to its lowest level at 71%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year