Hematological parameters are used to evaluate the health of sheep. However, these parameters can be affected by different factors such as the physiological stage, breed, age, gender and management conditions. The purpose of this study was determine the hematological parameters in female Pelibuey lambs raised in the humid tropics of Mexico. A total of 97 Pelibuey lambs ranging from two to four months of age were sampled and the blood used to determine the hematological parameters in automated analyzer. The obtained data were grouped to determine the average, minimum range, maximum range, median, mode, variance, standard deviation and variation coefficient. Results were compared with previous studies in males of the same age, adult Pelibuey ewes and veterinary books used as reference. Diverse variations were found between this study and previous reports. Hematological parameters established in this study will aid to evaluate the health of female Pelibuey lambs aged two to four months under the humid tropical conditions of Mexico.