The dorsal coloration is dark brownish gray, fading to laterally to light grey of the ventral side.

The male has an internal vocal sac but lacks the keratinized spines (seen in some of its congeners) on its upper lip.

[2] Leptobrachium waysepuntiense occurs in leaf litter of lowland rainforests as well as cacao and rubber plantations at elevations of 50–1,100 m (160–3,610 ft) above sea level.

The major threat to this species is deforestation, which is primarily driven by expanding oil palm plantations.

It is present in the Batang Toru Protection Forest and the Bukit Barisan Selatan National Park.