Arunachal Pradesh has international borders with Bhutan, Tibet, and Burma. Internally it shares borders with Assam and Nagaland. It has rivers from the higher mountains, Patkoj and Arakan ranges, that drain into the Brahmaputra River. The important rivers here are Kameng, Subansiri, Siang, Dibang, and Lohit. It is spread over 33,333 sq mi, and 98% of the area is an island, of which 80% is covered with forests. The mountains here are above 7000 meters, and the town has an elevation of fewer than 300 meters.
The climate is humid subtropical, monsoon-influenced warm-summer humid continental, and monsoon-influenced subarctic climate. The summers in Arunachal Pradesh range from March to May, with the maximum temperature reaching 40 degrees C. The average temperature here is 15 Degree to 21 degrees C, and during the Monsoons, it gets to 22 degrees to 30 degrees C.
After the summer comes to the monsoons, from May or June, and continues till September. The average rainfall in Arunachal Pradesh during these months is 300 centimetres varying between 80 centimetres to 450 centimetres.