Nigatu Tsehay was born and raised in Addis Ababa, Ethiopia. He was taught drawing and sketching by the artist Tesfaye Nigatu, who was a private art teacher at the Medesh Art Center in Addis Ababa. He received a BFA from the Ale school of Fine Arts and Design at Addis Ababa University in 2005. He taught Art as an Assistant lecturer in the same University until 2008. He received a scholarship from DAAD and later from KAAD for further study in Germany. In 2009, he received a recognition award from Camillo-Michele-Gloria-Preis, GVS-Förderung Junge Künstler. Nigatu completed a Diploma In Fine Art at the State Academy of Art and Design in Stuttgart in 2014.
Nigatu`s artworks have been displayed in various group and one-man shows. His work is part of private and corporate collections in Ethiopia and Europe.