town located on the southern coast of Guinea-Bissau. The surrounding area is covered with mangrove forests and swamps and has a monsoonal climate with an annual precipitation of about 100 inches (2,500 mm). Catió is a market centre for cash crops, including rice, coconuts, and oil palm cultivated in the nearby coastal lowlands. It has an airport and provides air transport to Bissau, the national capital. Pop. (2004 est.) 23,872.