His is at the request of New Zealand prime minister Jacinda Ardern.
He will meet those affected by the 15 March 2019 attack, which left 50 people murdered.
“The visit will be another sign that this nation will always stand with those affected by the terror attacks, and the people of Christchurch,” Ardern said in a statement.
“I’m sure all New Zealanders, but especially the Muslim community of Christchurch, will appreciate seeing the compassion and support, that has been so tangibly demonstrated since the attack, continue into the future.”
The Duke of Cambridge and family sent a message after the attacks: “No person should ever have to fear attending a sacred place of worship.
“This senseless attack is an affront to the people of Christchurch and New Zealand, and the broader Muslim community. It is a horrifying assault on a way of life that embodies decency, community, and friendship.”