Falling into the subtropical monsoon climate belt, Wuxi's weather is characterized by four distinct seasons. It has a humid rainy season between spring and summer, usually around June. Winter is mild with a lowest temperature of -9C. Summer is hot and humid with highs around 39C.

Average annual temperature: 15C.
Annual rainfall: 1,057 mm.
Rainy days: 127 days.
Annual frost free period: 222 days.
Yearly sunshine: 2,063 hours.
Best time to visit: All year round, though April through October is best.