The monsoon in India is responsible for meeting the freshwater requirements of more than 1.3 billion people living in the country. The moist southwest monsoon winds bring plenty of rainfall from June to September. India’s GDP is closely linked with the monsoon as agricultural production is largely dependent on the quantum of rainfall (Gadgil and Kumar, 2006). Moreover, the monsoon renews water in dams which is used in the drier seasons for domestic consumption, irrigation and construction. Therefore, getting an advance estimate of rainfall and the availability of water in dams is of utmost importance for its sustainable management. Timely estimation on different timescales—from a few days to the complete season—forms the basis of monsoon forecast science.