On 8 May 2013, Vatuvei extended his contract with the Warriors to the end of the 2015 season. He was the Warriors highest tryscorer for the 7th year in a row with 16 tries in 19 matches. Vatuvei was selected for the New Zealand World Cup squad. In the Kiwis opening game, a 42–24 victory over Samoa at Halliwell Jones Stadium in Warrington, Vatuvei scored a hat-trick. Vatuvei played in the Kiwis 34–2 World Cup final loss against Australia at Old Trafford. He played in 4 matches and scored 4 tries in the series.