So far, 485,000 people have visited the Munch 150 exhibition, which is divided between Olso's Munch Museum and its National Museum, more than twice the 240,000 originally hoped for.
"It's about the same number that visited 'The Modern Eye' Munch exhibition in Paris last year," Audun Eckhoff, director of the National Museum, told Norwegian state broadcaster NRK.
"That we in Oslo can get something like that, without the number of tourists and the central location of Paris, is amazing."
Munch, who is most famous for painting 'The Scream', was born on December 12th 1863 at a farm near the town of Elverum.
On Thursday, the actual anniversary, Elverum will host a huge celebration in its Terningen Arena, which will be attended among others by Norwegian novelist Karl Ove Knausgård.