Geography and climate of Bihar

Bihar is a vast stretch of fertile plain. It is drained by the Ganges River, including its northern tributaries Gandak and Koshi, originating in the Nepal Himalayasand the Bagmati originating in theKathmandu Valley that regularlyflood parts of the Bihar plains. The total area covered by the state of Bihar is 94,163 km². the state is located between 21°-58'-10" N ~ 27°-31'-15" N latitude and between 82°-19'-50" E ~ 88°-17'-40" E longitude. Its average elevation above sea level is 173 feet (53 m).The Ganges divides Bihar into two unequal halves and flows through the middle from west to east. Other Ganges tributaries are the Son, Budhi Gandak, Chandan, Orhani and Falgu. Though the Himalayas begin at the foothills, a short distance inside Nepal and to the north of Bihar, the mountains influence Bihar's landforms, climate, hydrology and culture. Central parts of Bihar have some small hills, for example the Rajgir hills. To the south is the Chota Nagpur plateau, which was part of Bihar until 2000 but now is part of a separate state called Jharkhand.

 Climate

Bihar is mildly cold in the winter (the lowest temperatures being in the range from 4 to 10 degrees Celsius; 40 to 50 degrees Fahrenheit). Winter months are December and January. It is hot in the summer (with average highs around 35-40 Celsius; 95-105 Fahrenheit). April to mid June are the hottest months. The monsoon months of June, July, August, and September see good rainfall. October,November and February,March have a pleasant climate.