 Between 1989 and 1992, Wevers served as Counsellor in the New Zealand Embassy, Brussels before becoming High Commissioner to Papua New Guinea (1993–1994) and as Ambassador to Japan (1994–1997).In 1999, Wevers was appointed Chair of the APEC Senior Officials Meeting, during New Zealand’s APEC year.In the 2000 New Year Honours, he was appointed a Companion of the New Zealand Order of Merit, for services to the 1999 APEC summit.