Ministry of Earth Sciences (MoES) Secretary M Rajeevan said the conditions look favourable for arrival of monsoon before the announced date.
"The announced onset date for monsoon is May 30, but there is a possibility that it may hit Kerala a day before that," Mr Rajeevan told PTI.
The normal date of onset of monsoon over Kerala is June 1, which marks arrival of seasonal rainfall in the country.
With chances of El Nino, a phenomenon associated with warming of Pacific waters, the IMD has predicted a normal monsoon this year.
Mr Rajeevan said the ministry will also undertake a programme starting this monsoon to study the viability of cloud seeding.
The programme will be carried out using two research aircrafts. One plane would be undertaking the exercise of cloud seeding while another aircraft would take samples to study its viability.
Solapur in Maharashtra has been chosen to conduct the research.
"We intend to take 200 samples that can help us understand how effective is the concept of cloud seeding. The programme will be carried over a period of three years," he said.
Several states like Kerala have also been conducting research on cloud seeding.