Regions crossed by the upper parts of the River Nile have a tropical/subtropical climate. The equatorial regions generally experience a rainy season from March to May and a second rainy season from October to November. The rest of the year consists of a dry season from December to February and a relatively dry season from June to September. The areas around the river banks are generally much cooler and less arid than the surrounding savannahs.
Northern Africa (Egypt, Sudan, Eritrea)
The climate in the northern parts of the Nile consists mostly of a long hot summer and a short mild winter, with precipitation primarily occurring in winter. As a result, most of the area crossed by the Nile is considered a desert due to the arid conditions.
Ethiopia (Upper Blue Nile)
As the source of the Nile, Ethiopia experiences two different types of climate regimes: the tropical savannah climate in the west and the tropical monsoon climate in the south and east. The country has one rainy season from May to September.
