After the COVID-19 pandemic in New Zealand, it was confirmed an historic one-off North versus South match was to be played in Wellington with no fans. Aumua was selected to take part in the one-off fixture, starting at hooker. The match was classed as a trail for players to be selected in the New Zealand international side. He was recalled into the side by new head coach Ian Foster in a 35-man squad. Before being assembled for international duties, Aumua among other national players played in the Mitre 10 Cup prior to travelling. He played in two matches for Wellington in the first two weeks of the competition. After missing the first test in Auckland, Aumua would travel to Australia for the 2020 Tri Nations Series. He made his first test appearance against Australia along with Akira Ioane, Cullen Grace, and Will Jordan.