In the buildup to the 2016 Summer Paralympics in Rio, Davies took part in his third IPC World Championships, the 2015 Games in Doha. Both his favoured events, the discus and the shot put, were contested in the F42 category but after undergoing a hernia operation just ten weeks before Davies was unsure of his form going into the competition. Davies' F42 shot put event opened the Championship and although by his own admission he believed his early throws were below his best, his second round throw of 14.35 was good enough to put him into second place and saw him progress to the latter rounds. In the finals Davies abandoned technique for power and threw a 14.88 and then a Championship record of 14.95 to secure the gold medal. In the discus Davies was dominant, breaking his own world record on three occasions on his way to a second gold, his best distance being 49.59m. Davies ended the year by being shortlisted for the 2015 BBC Wales Sports Personality of the Year.