Is it raining now in Bengaluru?
Sunny
25 AugNo upcoming precipitation for the next hour.
Last update: 04:30, 25 Aug 2026
Free to download * Essential from $0.83 * Prices vary by region and promotions.
- App Only
Track up to 20 locations
Home, office, kids' school - all at once, no switching tabs.
- App Only
Alerts for each of them
Get notified 15 minutes before rain - while you can still change your plans.
- App Only
Widgets on your home screen
Live radar without opening the app - on your lock screen or home screen.
Rain in Bengaluru: What You Need to Know
Bengaluru weather runs on two separate monsoon streams rather than one — the southwest monsoon arrives in early June with moderate, frequent rain, then the retreating northeast monsoon in September–October delivers the year's heaviest totals, with October averaging 147 mm against a bone-dry 4 mm in January. That bimodal pattern is exactly why a single city-wide forecast fails here, and it's what a hyperlocal radar is built to track.
The Deccan plateau's elevation, around 900 meters, moderates Bengaluru's temperatures but does nothing to stop flash flooding, because the city's natural network of lakes and valleys — the terrain that used to absorb heavy rain — has largely been built over. Add Bay of Bengal and Arabian Sea cyclonic depressions layering on top of both monsoon streams, plus frequent thunderstorms from March onward, and Bengaluru ends up with more sources of sudden, short-duration rain than most Indian cities.
RainViewer draws Bengaluru's radar data from the India Meteorological Department (IMD), refreshed every 5 minutes. On the live map, that's the difference between a thunderstorm dissipating over Whitefield and a cell tracking straight for the Outer Ring Road IT corridor — the kind of detail a rain percentage can't give you.
Rain by Season in Bengaluru
Retreating monsoon peak (September–October)
Bengaluru's heaviest rain doesn't arrive with the southwest monsoon in June — it comes in the September–October retreating monsoon window, when October averages 147 mm, the city's wettest month. The September 2022 flood, which overwhelmed the city with 131.6 mm in 24 hours, fell inside this window and is the clearest evidence that Bengaluru's rain risk peaks later than most of India's.
Southwest monsoon onset (June–August)
The southwest monsoon normally reaches Bengaluru in the first week of June, bringing rain that's moderate but frequent rather than intense, building on pre-monsoon thunderstorm activity that starts as early as March. Onset timing shifts year to year, making the exact start of the wet season the first transition risk for anyone planning outdoor events around it.
Dry season (December–April)
December through April is Bengaluru's calmest, driest stretch, and it's when the city schedules its major outdoor events — Aero India, held biennially at Yelahanka Air Force Station, and the city's large outdoor tech and startup calendar both sit outside the wet season by design.
Why You Need a Rain Radar in Bengaluru
IT corridor employees
The Outer Ring Road IT corridor between Yemalur, Bellandur, Panthur and Balagere hosts more than 700 companies, including Microsoft, Intel, Goldman Sachs and Morgan Stanley, and it's Bengaluru's primary flood hotspot when Bellandur Lake overflows. In the September 2022 flood, employees used tractors to reach Yemalur offices — checking the radar before commuting shows whether that corridor is clear or about to flood.
Aerospace and defence workers
Bengaluru produces 67% of India's defence aircraft and helicopters through Hindustan Aeronautics Limited, ISRO headquarters and the KIADB Aerospace SEZ in Bagalur, where Boeing, Airbus and Rolls-Royce all run facilities near the airport. A radar-confirmed dry window matters for any outdoor testing or ground operations tied to these sites.
Whitefield and Yelahanka commuters
Whitefield, the Yelahanka underpass and Hennur-Bagalur Road are documented recurring waterlogging points in east and northeast Bengaluru. Watching a cell's radar track toward these corridors before leaving gives commuters enough lead time to pick an alternate route.
Visitors planning Lalbagh or Cubbon Park outings
Bengaluru's frequent short thunderstorms mean an outdoor visit to Lalbagh Botanical Garden or Cubbon Park can go from clear to soaked in the time it takes to walk across the grounds. A live radar check before setting out shows whether the storm is 20 minutes away or already overhead.
Startup and tech park operations near Bellandur Lake
Startups and tech parks along the Outer Ring Road sit directly in the Bellandur Lake flood zone, a dependency largely unique to Bengaluru among Indian tech hubs. Karnataka's Chief Minister estimated the September 2022 flood cost IT companies ₹225 crore — tracking the radar for lake-adjacent offices is a standing operational habit, not a one-off check.
RainViewer Radar Coverage in Bengaluru
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 Bengaluru, India, the same feed extends across the Deccan plateau to Mysuru and Tumakuru.
Bengaluru Rain Radar: Frequently Asked Questions
- Is it raining in Bengaluru right now?
The only accurate answer is a live radar check — Bengaluru's rain comes from two separate monsoon streams plus frequent short thunderstorms, so rain in Bengaluru can be flooding the Outer Ring Road IT corridor while Malleshwaram stays dry. 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 go to Lalbagh or Cubbon Park today?
Check the radar before you go — Bengaluru's thunderstorms can build fast, especially from March onward, turning a clear sky into a downpour within 20 minutes. RainViewer's 5-minute updates show whether the storm is passing or settling in over the park. That's a better guide than a forecast that just says "chance of rain."
- Does rain affect the Outer Ring Road IT corridor?
Yes — the Yemalur-Bellandur-Panthur-Balagere stretch of the Outer Ring Road is Bengaluru's primary flood hotspot, with over 700 companies exposed when Bellandur Lake overflows into the corridor. In the September 2022 flood, IT employees used tractors to reach Yemalur offices after the road went underwater. RainViewer shows a cell's track toward the corridor before it arrives.
- Which parts of Bengaluru flood during heavy rain?
The Outer Ring Road IT corridor, Whitefield, the Yelahanka underpass and Hennur-Bagalur Road are Bengaluru's most consistently documented waterlogging points, with Bellandur Lake overflow the primary driver in the east. The September 2022 flood inundated around 2,000 houses and required inflatable boats in Varthur and Balagere-Panthur. Avoid these corridors during a radar-confirmed heavy cell.
- When is the best time to visit Bengaluru to avoid rain?
December through April is Bengaluru's driest, calmest stretch, while June through October carries the wet season with rain peaking unusually late in the September–October retreating monsoon window. Aero India, the city's biennial air show at Yelahanka Air Force Station, is scheduled during the dry months for exactly this reason. Visitors planning outdoor time should target December–April over the September–October peak.
- Why is rain in Bengaluru so hard to predict?
Bengaluru sits on the Deccan plateau at around 900 meters, and its natural lake-and-valley drainage network has largely been built over, so short convective bursts flood fast even though the city's total rainfall isn't the highest in India. Add two separate monsoon streams — the southwest monsoon in June and a heavier retreating monsoon in September–October — plus Bay of Bengal and Arabian Sea cyclonic depressions layering on top, and no single forecast pattern covers the year. A live radar view of each cell is the only way to track it in real time.
- Is there a live rain radar for Bengaluru?
Yes — RainViewer's hyperlocal radar for Bengaluru draws data from the India Meteorological Department (IMD) via mausam.imd.gov.in and refreshes every 5 minutes. It shows a thunderstorm building over Whitefield before it reaches the Outer Ring Road corridor, rather than a static forecast icon. Coverage extends across the Deccan plateau to Mysuru and Tumakuru on the same feed.
- Can I get a warning before rain hits Bengaluru?
Yes — RainViewer's rain alert notifies you when a storm cell is a set distance from a saved location, such as an office on the Outer Ring Road near Bellandur or a home in Whitefield. Setting an alert there gives IT employees time to leave before the corridor floods. The same alert works for any saved Bengaluru location, including Kempegowda International Airport.
Track Rain in Bengaluru in Real Time
The 700-plus companies along Bengaluru's Outer Ring Road IT corridor need to know the exact minute Bellandur Lake is about to overflow, not just that rain is "expected" today.
Bengaluru's rain comes from two separate monsoon streams plus sudden thunderstorms, so a cell can flood the Outer Ring Road before a citywide forecast catches up.
Your weather app says scattered showers over Bengaluru today. RainViewer's live hyperlocal radar shows it's already flooding the Outer Ring Road street by street while Malleshwaram stays dry — that's the call Bengaluru's IT workforce makes every time a cell builds over Bellandur Lake.
Track rain in Bengaluru — free Upgrade to Essential for alerts, forecasts, and full radar history
2-hour forecast in 5-minute slices
See the Outer Ring Road corridor 2 hours ahead in 5-minute steps, enough lead time to leave the office before Bellandur Lake overflows.
Rain alerts before arrival
Set an alert for an office in Bellandur or a home in Whitefield and get notified before the cell arrives.
Direction arrows on the map
Direction arrows show cells building from the southwest monsoon flow or tracking in from the Bay of Bengal during the September–October retreating monsoon.
48 hours of radar history
Review the last 48 hours to see how the September 2022 flood built up over the IT corridor, cell by cell.
Multiple locations
Track the Outer Ring Road, Whitefield and Yelahanka at once, all on independent alerts.
RainViewer
