Port Sudan has an hot desert climate (Köppen: BWh) with extremely hot and muggy summers and moderately hot winters, requiring the acquisition of fresh water from Wadi Arba’at in the Red Sea Hills and from salt-evaporating pans. Temperatures can easily exceed 30 °C (86 °F) in winter and 45 °C (113 °F) in summer
Over 90% of the annual rainfall falls between October and January, mostly in November, with the wettest month on record being November 1947 with 182 millimetres (7.2 in), whilst the wettest year was from July 1923 to June 1924 with 231 millimetres (9.1 in). Average annual rainfall is 76 millimetres (3.0 in), and no rainfall occurred between January 1983 and June 1984. The average temperature is 28.4 °C (83.1 °F).