[1] Born in Assens, he was the son of Niels Frederik Niss, a house painter, and his wife Barbara Kirstine.
In the late 1870s, he came into contact with Otto Bache who invited him to work in his studio where he became acquainted with the latest trends in French painting.
[1] The broad strokes and strong colours he applied to his autumn and winter landscapes brought him wide recognition.
In 1882, his Septemberdag i Jægersborg dyrehave won him a gold medal in Vienna and the following year a winter landscape of the Folehaven woods was bought by Statens Museum for Kunst, the Danish national gallery bringing him wider recognition.
In 1887 he became a member of the Royal Danish Academy of Fine Arts (re-elected 1890) and in 1892 he became a Knight of the Order of the Dannebrog.