The experiment was conducted to assess the effect of the different season on Jamnapari bucks on the basis of semen quality. Data on 144 ejaculates from four adult Jamnapari bucks (n = 6x6) were recorded. Semen was collected by the artificial vagina method twice a week, within 6:00 a.m., from each buck, during four seasons: autumn (September to November), winter (December to February), spring (March to May) and summer (June to August). The mean semen volume (1.14±0.06) in winter was significantly (P < 0.05) higher than the mean observed in other seasons. Ejaculate volumes did not differ significantly (P < 0.05) between the seasons. The percent of live sperm count, initial motility, acrosomal integrity, HOS positive spermatozoa, and distance travelled by vanguard spermatozoa were found to be significantly (P < 0.05) higher during autumn and winter than during spring and summer. The abnormal sperm count was lower in autumn (4.50±0.38%) and winter (6.04±0.42%) than in spring (6.50±0.37%) and summer (6.50±0.37%). In conclusion, the study found that seasons had a significant (P < 0.05) effect on individual motility, live sperm count, abnormal sperm, and intact acrosomes, whereas semen volume and sperm concentration/mL did not differ significantly (P < 0.05) between the seasons.