When Munthe moved to Christiania in 1863, his intention was to study medicine like his father, but his father advised him to take up the arts. He studied under Johan Fredrik Eckersberg in 1870, and continued under Morten Müller and Knud Bergslien until 1874. Between 1874 and 1876 he studied under Andreas Achenbach and his third cousin Ludvig Munthe in Düsseldorf. From 1877 to 1882 he lived in Munich most of the time. However, many of his motifs were taken from Norway. At this time he painted in the naturalist style. He is represented with several works in the National Gallery of Norway. Internationally he took part at the Exposition Universelle of 1900, the Louisiana Purchase Exposition of 1904 and elsewhere.