The average annual rainfall variability is highest in which one of the following states?

The correct answer is 'Rajasthan' Key Points Rainfall Variability in Rajasthan: Rajasthan experiences the highest annual rainfall variability among Indian states due to its arid and semi-arid climate conditions. The state lies in the northwestern region of India, which is predominantly desert (Thar Desert), receiving very low and highly inconsistent rainfall. Annual rainfall ranges from less than 100 mm in the western desert areas to around 800 mm in the eastern parts, leading to substantial variability within the state. Rainfall is largely dependent on the southwest monsoon, and the erratic nature of monsoon winds contributes to the high variability. Such variability significantly impacts agriculture and water resources, making drought a recurring issue in Rajasthan. Additional Information Assam: Assam, located in northeastern India, receives substantial rainfall due to its proximity to the Bay of Bengal and its hilly terrain. Rainfall in Assam is more consistent and less variable compared to Rajasthan, with an annual average of around 2,000-3,000 mm. The state experiences heavy rainfall during the monsoon season, with relatively stable patterns year after year. Meghalaya: Meghalaya is one of the wettest regions in the world, with places like Mawsynram and Cherrapunji receiving over 11,000 mm of rainfall annually. While the state receives abundant rainfall, the variability is not as high as Rajasthan due to its consistent climatic conditions influenced by orographic rainfall. Rainfall distribution in Meghalaya is more predictable owing to its unique geography and proximity to the monsoon wind patterns. Chhattisgarh: Chhattisgarh, located in central India, experiences moderate and relatively stable rainfall, with an annual average of about 1,200-1,400 mm. The state receives rainfall primarily from the southwest monsoon, and the variability is much lower compared to Rajasthan. While the state is prone to occasional droughts, its overall rainfall variability is not as pronounced as Rajasthan’s.