Female Coquerel's sifakas choose their mate(s) whether from intragroup males or males from outside groups. They have synchronized estrus in January and February. Infants are born in June and July after a gestation period around 162 days. Normally, one infant is born during Madagascar's dry season (June–July). Newborn lemurs have an average weight of , though it can vary between . An infant clings to its mother's chest until about a month or so after birth, then transfers to her back.