Getting past qualifying at the St. Petersburg Trophy, she lost in the first round to fifth seed Anastasia Pavlyuchenkova. At the Qatar Open, Koukalová was defeated in the first round of qualifying by Jana Čepelová. At the Malaysian Open, she lost in her first-round match to Naomi Broady. Playing in Indian Wells at the BNP Paribas Open, Koukalová was defeated in the first round of qualifying by Verónica Cepede Royg. At the Katowice Open, she lost in her first-round match to qualifier Ekaterina Alexandrova.