At the 2013 European Artistic Gymnastics Championships, Hambüchen qualified to the horizontal bar individual event final but placed 6th after a fall. In July, he compete at the 2013 Summer Universiade where the German team placed 4th. Hambüchen won the silver medal in the all-around behind Russian Nikolai Kuksenkov, beating 2013 European Champion David Belyavskiy. He also won silver in the floor individual event final behind Japan's Ryohei Kato. He competed at the 2013 World Artistic Gymnastics Championships where he won the bronze medal in the all-around individual event final. He also finished in 7th place in the floor and won a silver medal in the horizontal bar individual event finals, once again in a close battle behind Zonderland.