Bakhtiyarpur experiences a subtropical climate with significant seasonal variations. Winter, from December to February, is cool and dry, with temperatures ranging from 6-32°C. Spring, from March to May, brings warmer temperatures, often reaching up to 42°C, while summer, from June to August, is hot with average highs around 36°C. Autumn, from September to November, sees a slight drop in temperature, but still remains relatively warm, before cooling down again for winter. The annual temperature range is quite wide, indicating significant seasonal changes throughout the year.