Meanwhile, Mumbai is likely to witness at least 22 days of high tide in the Arabian Sea during the four months of monsoon this year

Data from the Disaster Management Department of the BMC shows that seven days in June and four days in July, five days each August and six days in September will be high-tide days

The highest tide of 4.84 metres is likely to occur on September 20 at 1 pm

If the heavy rain occurs during the high tides, there are chances of flooding in lower parts of the city despite cleaning of drains

Last year, there were 25 days of high tide and the highest tide of 4.87 metres occurred on August 3 and 4, at about 1.14 pm and 1.56 pm

Meanwhile, the Southwest monsoon, the lifeline of India's farm-based economy, on Sunday made its onset over the Nicobar Islands, the southernmost region of the country, the India Meteorological Department (IMD) said

"Southwest monsoon has advanced into some parts of the Maldives, and the Comorin area and some parts of the South Bay of Bengal, Nicobar Islands and South Andaman Sea on Sunday," the weather office said