'South Wind' is a novel by British author Norman Douglas. It is Douglas's most famous book and his only success as a novelist. It is set on an imaginary island called Nepenthe, located off the coast of Italy in the Tyrrhenian Sea, a thinly fictionalized description of Capri's residents and visitors. The narrative concerns twelve days during which Thomas Heard, a bishop returning to England from his diocese in Africa, yields his moral vigor to various influences.