Suwannawat began the season in the Wuxi Classic Qualifiers. He defeated Michael Wasley and Ben Woollaston, but then lost to Joe Perry in the final qualifying round.&lt;ref name="Suwannawat 2012/13"&gt;&lt;/ref&gt; After this Suwannawat lost 17 matches in a row and had to wait until February in qualifying for the Welsh Open where he beat Jamie Jones 4–1, before losing to Marco Fu by the same scoreline. Suwannawat's season ended when he was beaten 6–10 by Zhang Anda in the first round of World Championship Qualifying. He dropped 18 places during the campaign to finish it ranked world number 92.