Mumbai receives an enormous amount of rain during its monsoon season, averaging around 2,400 mm (about 95 inches) a year, with the vast majority falling in a concentrated window from June through September. The city’s low-lying coastal geography, combined with dense construction and aging drainage infrastructure, means that intense monsoon downpours regularly bring the city to a standstill, flooding streets, railway lines, and low-lying neighborhoods within hours of the heaviest bands passing through. High tide occurring at the same time as heavy rain, as happened during the catastrophic 2005 monsoon floods, can make drainage even harder since floodwater has nowhere to go. Because monsoon rainfall in Mumbai varies enormously in intensity from day to day and even hour to hour, radar tracking is one of the most practical tools residents, commuters, and emergency services use to judge whether the next few hours will bring a manageable shower or a city-stopping downpour. The India Meteorological Department operates a dedicated Doppler radar at Colaba covering the city.
Rain in Mumbai by month
Mumbai gets about 2,509 mm (98.8 in) of rain in an average year. The wettest month is July, with 834 mm (32.8 in), and the driest is January, with 0 mm (under 0.1 in).
| Month | Average rain | Average temperature |
|---|---|---|
| January | 0 mm (under 0.1 in) | 23.2 °C (74 °F) |
| February | 2 mm (0.1 in) | 25.7 °C (78 °F) |
| March | 5 mm (0.2 in) | 28.7 °C (84 °F) |
| April | 3 mm (0.1 in) | 30.7 °C (87 °F) |
| May | 22 mm (0.9 in) | 31.2 °C (88 °F) |
| June | 535 mm (21.1 in) | 28.7 °C (84 °F) |
| July | 834 mm (32.8 in) | 26.6 °C (80 °F) |
| August | 606 mm (23.9 in) | 26.1 °C (79 °F) |
| September | 376 mm (14.8 in) | 26.2 °C (79 °F) |
| October | 104 mm (4.1 in) | 26.2 °C (79 °F) |
| November | 17 mm (0.7 in) | 24.6 °C (76 °F) |
| December | 5 mm (0.2 in) | 23.3 °C (74 °F) |
Long-term monthly averages from NASA POWER (MERRA-2 satellite reanalysis). They describe the wider area around Mumbai and can differ slightly from local weather-station records.
Learn more: Flash Flood Warning Signs on Radar · Open the full Rain Map
Frequently Asked Questions
Is it raining in Mumbai right now?
The map above shows recent radar observations over Mumbai, Maharashtra where coverage is available. Use the map legend and timestamp to interpret the imagery. A blank map over Mumbai can mean no detected precipitation, missing coverage, delayed data, or rain too light for radar to detect.
How often does the Mumbai rain radar update?
Updates depend on the radar provider and local network. Check the timestamp on the map for the latest available frame, and press play to compare recent observations. Radar imagery can lag conditions on the ground.
Can I see if a storm is heading toward Mumbai?
Press play to compare recent radar frames over Maharashtra and see the direction of detected rain. This can help you assess approaching showers near Mumbai, but storms can grow or change direction; check your local weather service for forecasts and warnings.
Is this Mumbai rain radar free to use?
Yes, completely free – no account, app download, or sign-up required. It works in any browser on desktop and mobile.