Is it raining now in Mumbai?
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Last update: 00:30, 8 Aug 2026
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Rain in Mumbai: What You Need to Know
Mumbai weather during monsoon season is defined by cloudbursts, not steady rain — the city can take 50 to 100 mm in a single hour, and its all-time record of 944 mm fell in just 24 hours at the IMD Santacruz station on 26 July 2005. A city-wide forecast can't tell you whether that intensity is landing on Bandra-Kurla Complex or three kilometers away in Colaba — that's what a hyperlocal radar is for.
Built across reclaimed land from seven former islands, much of Mumbai sits at or near sea level, and flooding gets worse fast when heavy rain coincides with high tide: seawater blocks the Mithi, Dahisar, Oshiwara and Poisar rivers' storm drains from emptying at the exact moment the city needs them most. That tide-rain overlap is why the same rainfall total can be a non-event on a low-tide day and a citywide flood on a high-tide one — no standard forecast accounts for the tide table.
RainViewer draws Mumbai's radar data from the India Meteorological Department (IMD), refreshed every 5 minutes. On the live map, that's the difference between a cell weakening over the harbor and one tracking straight for Hindmata Junction — the kind of block-by-block detail a rain percentage can't give you.
Rain by Season in Mumbai
Monsoon (June to September, heaviest in July)
Mumbai's wet season delivers 2,200–2,500 mm a year, roughly 80% of it between 15 June and 15 September, arriving as coastal, convective downpours rather than steady drizzle. July carries the heaviest, most disruptive spells, and it's also the month of the city's reference disaster — the 26 July 2005 flood that killed roughly 1,094 people across Maharashtra.
Transition — late monsoon (August–September)
Ganesh Chaturthi, Mumbai's largest outdoor event, falls in the monsoon tail in August or September and shifts dates yearly, landing right when late-season rain is least predictable. Immersion processions moving through the streets are frequently disrupted by rain that a fixed festival-week forecast can't anticipate.
Dry season (October–May)
Once the monsoon withdraws by mid-October, Mumbai turns dry through May, with pre-monsoon humidity building through May ahead of the next onset. Outside the four-month wet window, the flooding risk at Hindmata, Andheri subway and Bandra-Kurla Complex essentially disappears.
Why You Need a Rain Radar in Mumbai
Financial sector commuters
Mumbai's Bombay Stock Exchange and National Stock Exchange anchor the city's financial district, and both depend on a workforce that reaches Nariman Point and Bandra-Kurla Complex through the Western, Central and Harbour rail lines. A radar-confirmed dry 30-minute window is the difference between catching a functioning train and getting stuck once services short-terminate.
Suburban rail commuters
Mumbai's suburban railway carries 7.5 million people a day across 450 km of track, and it's the transport link most exposed to monsoon flooding, with short-terminations common during heavy spells. Checking the radar before leaving for the station shows whether a cell is about to sit over the line or clear it.
Hindmata Junction and Andheri residents
Hindmata Junction in Sion is a perennial flood hotspot because Mumbai's Victorian-era drains were built for roughly 25 mm an hour while modern cloudbursts deliver three to five times that. Watching a cell's radar track toward Sion or the Andheri subway gives enough lead time to reroute before the road — or the subway — closes.
Bollywood outdoor shoots
Mumbai's film industry runs its largest studios and outdoor shoots across the city, and a location shoot scheduled around a "chance of rain" forecast risks losing the day entirely. A live radar check shows whether a shower will pass over the set in 15 minutes or settle in for the afternoon.
Visitors timing Gateway of India or Marine Drive walks
Colaba and Marine Lines are both documented waterlogging points, but they're also where most first-time visitors spend their evenings at the Gateway of India and Marine Drive. Checking the radar before heading out turns a coin-flip evening into a planned one.
RainViewer Radar Coverage in Mumbai
RainViewer draws radar data for India from the India Meteorological Department (IMD) via mausam.imd.gov.in, updated every 5 minutes. Coverage is strongest across the Gangetic Plain, western coast, and major cities; sparser in the Himalayan foothills and remote northeast. From Mumbai, India, the same feed extends north along the Konkan coast to Thane and Vasai-Virar.
Mumbai Rain Radar: Frequently Asked Questions
- Is it raining in Mumbai right now?
The only accurate answer is a live radar check — Mumbai's monsoon cells are convective and coastal-driven, meaning rain in Mumbai can be hammering Bandra-Kurla Complex while Colaba stays dry, and conditions shift within minutes. RainViewer's hyperlocal radar, sourced from the India Meteorological Department (IMD) and updated every 5 minutes, shows exactly where rain is falling across the city right now.
- Should I take the train during Mumbai's monsoon today?
Check the radar before you leave — the Western, Central and Harbour lines have all short-terminated during past monsoon spells, and a cell sitting over the tracks is a better predictor of delay than a rain forecast percentage. RainViewer's 5-minute updates show whether the line ahead is clear or about to flood.
- Does rain affect the Andheri subway and Mumbai's suburban rail?
Yes — the Andheri subway has been closed to traffic during past flooding events, and Mumbai's suburban rail lines, carrying 7.5 million daily commuters, regularly short-terminate when cells stall over the tracks. Checking the radar for a cell's direction before leaving shows whether to take the subway route or wait it out. RainViewer displays that cell's position and movement in real time.
- Does Mumbai flood when it rains?
Yes — Hindmata Junction, Dadar, Sion, Andheri, Kurla, Bandra-Kurla Complex, Mulund, Parel, Byculla, Colaba and Marine Lines are all documented waterlogging points, worsened when heavy rain coincides with high tide and blocks storm drains from emptying. The city's Victorian-era drainage system was engineered for about 25 mm an hour, well under what modern cloudbursts deliver. Avoid these areas during a radar-confirmed heavy cell.
- When is the best time to visit Mumbai to avoid rain?
October through May is Mumbai's dry season, with June through September carrying nearly all of the city's 2,200–2,500 mm annual rainfall and July bringing the heaviest, most disruptive spells. Visitors around Ganesh Chaturthi in August or September should expect rain to interrupt outdoor immersion processions, since the festival falls in the unpredictable monsoon tail. Outside June–September, flooding risk at spots like Hindmata drops close to zero.
- Why does it rain in one part of Mumbai but not another?
Mumbai's monsoon cells are coastal-driven and convective, meaning intensity varies block by block rather than falling evenly across the city, and flooding compounds further when heavy rain coincides with high tide and blocks the Mithi, Dahisar, Oshiwara and Poisar rivers from draining. A forecast covering all of Mumbai can't capture that a cell dumping 80 mm over Bandra-Kurla Complex might miss Colaba entirely. A live radar view of the cell's track is the only way to see the difference in time to act.
- Is there a live rain radar for Mumbai?
Yes — RainViewer's hyperlocal radar for Mumbai draws data from the India Meteorological Department (IMD) via mausam.imd.gov.in and refreshes every 5 minutes. It shows a cloudburst building over the harbor before it reaches Hindmata Junction, rather than a static forecast icon. Coverage extends along the coast to Thane and Vasai-Virar on the same feed.
- Can I get a warning before rain hits Mumbai?
Yes — RainViewer's rain alert notifies you when a storm cell is a set distance from a saved location, such as your stop on the Western Line or an office near Bandra-Kurla Complex. Setting an alert there gives commuters time to leave before a cell stalls over the tracks. The same alert works for any saved Mumbai location, including Hindmata Junction or the airport.
Track Rain in Mumbai in Real Time
Mumbai's 7.5 million daily suburban rail commuters need to know the exact minute a cell is about to stall over the Western Line, not just that rain is "likely" today.
Mumbai's cloudbursts intensify fast and flood Hindmata Junction before a citywide forecast even updates, especially when heavy rain lines up with high tide.
Your weather app says rain is "likely" in Mumbai this afternoon. RainViewer's live hyperlocal radar shows it's already flooding Hindmata Junction street by street while Bandra-Kurla Complex stays dry — that's the call Mumbai's rail commuters make every time a cloudburst builds.
Track rain in Mumbai — free Upgrade to Essential for alerts, forecasts, and full radar history
2-hour forecast in 5-minute slices
See the Western, Central and Harbour lines 2 hours ahead in 5-minute steps, enough lead time to catch a train before service short-terminates.
Rain alerts before arrival
Set an alert for your stop on the Western Line or an office near Bandra-Kurla Complex and get notified before the cell reaches you.
Direction arrows on the map
Direction arrows show cells moving in off the Arabian Sea, before they reach the harbor and Colaba.
48 hours of radar history
Review the last 48 hours to see how the 26 July 2005 record downpour built up, cell by cell.
Multiple locations
Track Hindmata Junction, Andheri and Bandra-Kurla Complex at once, all on independent alerts.
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