The forest wildcat’s fur is fairly uniform in length throughout the body. The hair on the tail is very long and dense, thus making it look furry and thick. In winter, the guard hairs measure 7 cm, the tip hairs 5.5–6 cm, and the underfur 4.5–5.5 cm.
Corresponding measurements in the summer are 5–6.7 cm, 4.5–6 cm, and 5.3 cm. In winter, the forest wildcat’s main coat colour is fairly light grey, becoming richer along the back, and fading onto the flanks. A slight ochreous shade is visible on the undersides of the flanks.