Its width varies greatly over its length and it's very difficult to be precisely. It varies from say about 350 meters to over 7.5 Km with an average of 2.8 kilometres. However the Nile has to go through a 7 meter wide gap at the Murchison Falls in Uganda and the delta covers about 240 Km of coastline.
The River Nile is approximately 8 kilometers (5 miles) wide, though like any river this will vary from place to place.
Nile River
Egypt has only one river - the river Nile, the longest river in the world.
The Nile is a popular tourist destination, attracting millions of visitors each year. The exact number can vary, but it is estimated that around 12-15 million tourists visit the Nile annually to explore its historic sites, enjoy cruises, and experience its unique culture.
Nile River
Egypt's Nile River is probably the most significant of these.
The Nile River.
The River Nile flows through Cairo, Egypt.
The world's widest river is the Amazon, extending six miles wide in some places.
wide river valleys
Nile River.
Given the Nile is over 4,000 miles long it is impossible to answer this question precisely. However the Nile Delta is 160 km in length by some 240 km of coastline. The links below provide more information. The River Nile is widest at Edfu, with a width of 7.5 km.