Mumbai records wettest July since records began, India

With 1 474.4 mm (58 inches) of rain recorded between July 1 to 28, India's state of Maharashtra capital Mumbai saw the city's highest rainfall for this month in 76 years. The previous record was set in 2014 with 1 468.5 mm (57.8 inches) of rain.

On Tuesday, July 28, south Mumbai was lashed by intermittent, intense bouts of rain through the day, with 87.6 mm (3.4 inches) of rain from 03:00 to 15:00 UTC (08:30 to 20:30 LT), while the suburbs saw 7.8 mm (0.3 inches).

Mumbai recorded 1 474 mm (58 inches) of rain between July 1 and 28, which was an all-time record. The India Meteorological Department (IMD) keeps rainfall data from 1944 onwards when the Santacruz Observatory was established. 

Although Mumbai had previously registered a record 944.2 mm (37.2 inches) of rain over 24 hours in July 2005, the monthly total was 1 454.5 mm (57.3 inches). In July 2019, the city registered 1 464.8 mm (57.6 inches) of rain.

Other remarkable years include 1965 with 1 455.5 mm (57.3 inches), 1961 with 1 385.5 mm (54.5 inches), 2011 with 1 312.9mm (51.7 inches), and 2010 with 1 250.4mm (49.2 inches).

This month, Mumbai registered 75.5 percent excess rainfall and experienced eight days of heavy to very heavy rain. Aside from July 2, the city has received rainfall every day of the month, with five days of very heavy downpours.

Maximum rainfall was recorded between July 4 and 5 with 200.8 mm (7.9 inches), followed by 191.2 mm (7.5. inches) between July 15 to 16.

"Weather systems in the Arabian Sea and larger factors such as a weak positive Indian Ocean Dipole (IOD)-- an ocean-atmosphere phenomenon with a difference in sea surface temperatures characterized by cooling in parts of the Indian Ocean, leading to enhanced rain-- ensured active monsoon conditions through most of the month," an IMD official explained.

From June 1 to July 28, Mumbai has received 82.6 percent of its seasonal average rain.

The IMD has issued a yellow alert for heavy rain from Wednesday to Saturday, July 29 to August 1.

Featured image credit: Satish Vijaykumar/Flickr


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