129(b) of Salisbury, in Rhodesia. The rest of the year is cool and dry The annual rainfall for Kano, which is located at a height of 1,539 feet above sea level, is 34 inches and is almost entirely concentrated in the summer. There is a marked difference between the climate, culture and geography of northern and southern Sudan. There is virtually no rainfall during the year in Khartoum. South Sudan has a climate similar to an Equatorial or tropical climate, characterized by a rainy season of high humidity and large amounts of rainfall followed by a drier season. It is, however, interesting to note that the highest temperatures do not coincide with the period of the highest sun (e.g. Days are hot, and during the hot season, noon temperatures of over 100°F. June in the northern hemisphere) but occur just before the onset of the rainy season, i.e. 129 (a). The Köppen-Geiger climate classification is BWh. Summers are very hot throughout the country, whilst winters are cooler in the north.Tropical clothes all year, warmer clothes for cool mornings and evenings (especially in the desert).Sudan is bordered by Egypt to the north, the Red Sea to the northeast, Ethiopia and Eritrea to the east, South Sudan to the south, the Central African Republic and Chad to the west, and Libya to the northwest. The annual rainfall is 135 mm | 5.3 inch. In the west wind erosion caused by the northeast trade winds has created a vast sand plain, the Qawz, with rippling sand dunes. Climate.