The southwest monsoon arrived in Maharashtra on Sunday (May 25, 2025), making it the earliest onset of the annual rainfall season over the state in 35 years, the India Meteorological Department said.

The southwest monsoon is expected to advance to Mumbai and some other parts over the next three days, the IMD added.

In 1990, southwest monsoon made onset over Maharashtra on May 20, IMD scientist Sushma Nair said.

The monsoon advanced into some more parts of the Arabian Sea, Karnataka, entire Goa, parts of Maharashtra, north Bay of Bengal, and parts of Mizoram, parts of Manipur and Nagaland on Sunday, the IMD said.

The northern limit of monsoon passes through Devgad, Belagavi, Haveri, Mandya, Dharmapuri, Chennai, Aizawl and Kohima, it said.

“Conditions are favourable for further advance into some more parts of central Arabian Sea, more parts of Maharashtra including Mumbai, Karnataka including Bengaluru, some parts of Andhra Pradesh, remaining parts of Tamil Nadu, more parts of west-central and North Bay of Bengal and some more parts of North Eastern states during next three days,” the IMD said.