It is known from the Pacific lowlands of southwestern Colombia (Cauca and Nariño Departments[3]) and northern Ecuador (Esmeraldas Province).
[2][4] The specific name litoralis refers to the proximity of the type locality to the sea.
[4] Adult males measure 19–20 mm (0.7–0.8 in) in snout–vent length; female size is unknown.
The tympanum is visible and only slightly obscured by the supra-tympanic fold posterodorsally.
[5] Centrolene litorale occurs in tropical lowland rainforests at elevations of 100–200 m (330–660 ft) above sea level.