ANSWER is tropical monsoon rainforest climate.The climate of Assam is tropical monsoon because of high hills of Arunachal, Manipur, Mizoram prevent the rain-bearing monsoon WINDS from escaping this region.The Himalayan and the eastern hills ranges cause an OROGRAPHIC rise of the monsoon winds with consequent heavy rainfall in North East India.ClimateRegion/statessub-tropical HUMID climateParts of Uttar Pradesh, Bihar, Jharkhand, Madhya Pradesh, Chattisgarhmountain climateParts of Jammu and Kashmir, Himachal Pradesh, and Uttaranchaltropical DRY climateParts of Odisha, West Bengal, Madhya Pradesh, Maharashtra, Telangana, Andhra Pradesh