Taicang is located in the alluvial plain of the Yangtze River Delta. The land is flat and inclines slightly from the northeast to the southwest. The eastern part consists of a plain along the river and the western area has low-lying land. Taicang belongs to the north sub-tropic humid climate zone with distinctive seasons and a moderate climate.
As the nearest port to the estuary of the Yangtze River, Taicang Port has a 38.8 kilometer coastal line, of which the deep-water port measures 25 kilometers. The port line is roughly straight and the shoal is stable. It is ice-free and does not silt up throughout the year. The deep-water area is spacious and stable and serves as a turning basin for ships up to 50,000 tons. It is a "golden port" in the lower reaches of the Yangtze River.