Seeded fifth at the Engie Open de Biarritz, Koukalová reached the semifinal round where she lost to sixth seed and eventual champion, Laura Siegemund. In Seoul at the Korea Open, Koukalová retired from her first-round match against Magdaléna Rybáriková due to injury. At the Tashkent Open, Koukalová was defeated in the first round by qualifier Kateryna Kozlova. Coming through qualifying at the Generali Ladies Linz, Koukalová lost in the first round to Denisa Allertová. Entering the Kremlin Cup as a qualifier, Koukalová was defeated in the second round by eventual champion Svetlana Kuznetsova. Koukalová played her final tournament of the season at the Al Habtoor Challenge. Seeded second, she made it to the final where she lost to sixth seed Çağla Büyükakçay.