Zhangjiagang Weather & Climate: Best Time to Visit

In Zhangjiagang, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a very warm 33°C (91°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 9°C (48°F).

At night, temperatures range from around 26°C (79°F) in July to 1°C (34°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Zhangjiagang experiences significant rain/snowfall throughout the year, averaging 1298 mm (51 in) of precipitation annually. Zhangjiagang can be quite wet during June, receiving approximately 251 mm (9.9 in) of precipitation over 13 rainy days.

In contrast, during the driest month (December), you will experience much drier conditions, with 40 mm (1.6 in) of precipitation spread across 10 rainy days days. For more details, please visit our Zhangjiagang Precipitation page.

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

The average number of days each month with precipitation

Zhangjiagang can be enjoyed more throughout the sunniest month of August under a blue sky, with approximately 8.2 hours of sunshine daily. In contrast, the city experiences much darker days in February, with only 4.0 hours of sunlight per 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 Zhangjiagang.

The city experiences its highest humidity in June, reaching 79%. In February, the humidity drops to its lowest level at 74%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year