In a televised address punctuated by moments of visible emotion, King Haakon VIII sat at a desk beside a picture of the late king, two lit candles and a bowl of white roses. He noted that Saturday would have been his parents' 58th wedding anniversary, appearing to choke back tears as he spoke.
"Thank you for being such a good dad," Haakon said. "Now it is my turn."
The new king described Harald as a 'warm and funny grandfather' to his six grandchildren and a 'loving and caring husband' to Queen Sonja. He recalled that his father had brought the family together 'with a natural authority' of which he might not have been aware himself.
"He constantly reminded us in the family that each of us must do things in our own way. Find our own style. Be ourselves," Haakon said.
The speech also stressed national unity. Haakon said the royal family believed in a 'society built on law and justice, where everyone is of equal value'.
He remarked on the 'powerful and moving experience' of seeing thousands of Norwegians gather outside the palace with flowers and candles. 'We are in mourning, yet at the same time it brings comfort and strength that so many are grieving together with us,' he said.
Norway's Prime Minister, Jonas Gahr Støre, laid flowers outside the palace and signed a book of condolences after greeting the new king, saying the country was 'united in grief and gratitude'.
King Haakon will swear an oath of allegiance in parliament on Tuesday and later participate in a consecration service with his wife, Queen Mette-Marit. A national period of mourning has been declared, though no date has yet been set for King Harald's funeral.