There is very little information on the reproductive biology of Tepui Swift. Collins (1972) surmised that this species has "a late 'spring' - early 'summer' breeding season (in the northern hemisphere sense) closely tied to the onset of the rainy season in the area". Males with large gonads were collected in February and April (Willard et al. 1991). A nest is reported from March (Hilty 2003); the date of another nest was not specified (Willard et al. 1991). Hilty (2003) suggested that Tepui Swift "usually (?)" breeds in colonies.
One nest was a cup attached to a nearly vertical wall in a rock grotto (Hilty 2003); a second nest was not described, but was encountered in a rock grotto by a small stream (Willard et al. 1991). The eggs have not been described; nothing further is known about the nesting biology of this swift.