The aim of this study was to determine the influence of season on the morbidity of pre-weaned dairy calves and its influence on the consumption of antibiotics. The five-year study was performed on the one farm in 414 calf housed in the hutches. Live weight, morbidity, mortality and antibiotic use by calves were monitored in every season. All statistical analyses were performed in TIBCO Statistica. Calves born in autumn had a significantly lower birth weight, weaning weight and weight gain. However, the effect of season on morbidity, mortality and antibiotic use on calves was no statistically significant.