Is it raining now in Coimbatore?
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Last update: 18:30, 15 Aug 2026
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Rain in Coimbatore: What You Need to Know
Coimbatore weather runs on a two-monsoon calendar unlike most other Indian cities — the October-wettest northeast monsoon delivers the bulk of the city's roughly 1,039mm annual rainfall, while the June–September southwest monsoon is cut down by the Western Ghats rain-shadow effect. A hyperlocal radar matters here because Coimbatore's rain character flips between two very different monsoon sources, and a single seasonal forecast can't tell you which one is producing today's cell.
The mechanism is the Western Ghats rain-shadow position: Coimbatore sits on the leeward side, which blocks much of the June–September southwest monsoon and makes the city markedly drier than windward coastal cities like Kochi despite a broadly similar latitude — the October northeast monsoon, unblocked by the Ghats, becomes the city's real wet season instead. The Noyyal river, a Cauvery tributary, channels this rain through a network of surface lakes and tanks across the urban area, and that network is what shapes which neighborhoods flood.
RainViewer's radar for Coimbatore draws on India Meteorological Department (IMD) data, refreshed every five minutes, so a cell moving in during the October northeast monsoon shows up before it reaches the Noyyal's lake-and-tank network. The live map shows the difference between light rain over the textile district and a heavy cell that will back up the surface tanks feeding low-lying neighborhoods along the Noyyal.
Rain by Season in Coimbatore
Northeast Monsoon (October–November)
October is Coimbatore's wettest month at ~185mm as the northeast monsoon, unblocked by the Western Ghats, delivers the bulk of the city's annual rain. This is the most disruptive period for the low-lying neighborhoods along the Noyyal river and its network of urban lakes and tanks, which both drain the city and can back up during heavy rainfall.
Southwest Monsoon (June–September)
The June–September southwest monsoon contributes comparatively little rain to Coimbatore due to the Western Ghats blocking effect, making this stretch quieter than in most other researched Indian cities. This sets Coimbatore's seasonality sharply apart from coastal Tamil Nadu cities like Chennai, where the same months bring far more rain.
Dry Season (December–May)
January is Coimbatore's driest month at just ~12mm, with the dry stretch running December through May before the northeast monsoon returns. Coimbatore's textile and auto-components industries use this long dry window for outdoor logistics work the October–November wet season interrupts.
Why You Need a Rain Radar in Coimbatore
Textile Mill Operators in the "Manchester of South India"
Coimbatore hosts over 50% of India's spinning mills, many with outdoor loading and storage areas exposed to the October–November northeast monsoon. Checking the radar before a heavy cell arrives gives mill operators time to move stock and secure outdoor yards ahead of Noyyal-linked waterlogging.
Auto Components and Pump Manufacturers
Coimbatore supplies over 40% of India's pump and motor requirements and draws OEM suppliers to its auto-components outsourcing cluster, much of it dependent on trucks moving through the city on schedule. Logistics coordinators check the radar before dispatching a delivery, since a heavy northeast monsoon cell can back up the Noyyal's tank network and flood access roads.
Residents in Low-Lying Neighborhoods Along the Noyyal
The Noyyal river and adjacent low-lying neighborhoods are documented as waterlogging-prone, since the river's network of urban lakes and tanks can back up during heavy rainfall instead of draining the city. Checking the radar during the October–November monsoon gives residents in these areas more lead time than watching the river alone.
Travelers Using Coimbatore International Airport
Coimbatore International Airport (CJB) at Peelamedu, Tamil Nadu's second-busiest after Chennai, sees its access roads affected when a heavy northeast monsoon cell backs up the city's tank network. Checking the radar before heading to Peelamedu shows whether an approaching cell is likely to slow the drive.
Visitors Planning Day Trips Toward the Nilgiris
Coimbatore's position as the gateway to the Nilgiris means visitors often plan hill day trips that can be disrupted by an October–November northeast monsoon cell moving through the city before they even leave. Checking the radar before setting out shows whether it's worth waiting for a cell to clear the Coimbatore side of the route first.
RainViewer Radar Coverage in Coimbatore
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 Coimbatore, the same feed covers neighboring Tirupur and the Nilgiris hill region toward Ooty, useful for tracking northeast monsoon cells moving across the Western Ghats foothills.
Coimbatore Rain Radar: Frequently Asked Questions
- Is it raining in Coimbatore right now?
A live radar is the only accurate answer, because Coimbatore runs on a two-monsoon calendar where the Western Ghats block one season and amplify the other, changing rain conditions block by block across the city. RainViewer's hyperlocal radar draws on India Meteorological Department (IMD) data refreshed every five minutes, showing exactly where active rain is falling over Coimbatore right now.
- Should I plan a day trip toward the Nilgiris from Coimbatore during monsoon season?
A day trip toward the Nilgiris during the October–November northeast monsoon risks a cell moving through Coimbatore before you even reach the hill roads, since this is the city's genuine wet season. Checking the radar before setting out shows whether the local cell is worth waiting out first.
- Does rain affect the road to Coimbatore International Airport?
Yes — the access road to Coimbatore International Airport (CJB) at Peelamedu can be affected when a heavy northeast monsoon cell backs up the Noyyal's network of urban lakes and tanks. Checking the radar before heading to the airport shows whether the route is clear or under active rain.
- Does Coimbatore flood when it rains?
Yes, primarily through waterlogging — the Noyyal river and adjacent low-lying neighborhoods are documented as flood-prone, since the river's linked network of urban lakes and tanks can back up during heavy rainfall instead of draining the city. This risk concentrates in the October–November northeast monsoon window, Coimbatore's main wet season.
- When is the best time to visit Coimbatore to avoid rain?
December through May is Coimbatore's dry season, with January the driest month at just ~12mm, making it the most reliable window to visit the city's textile markets and plan Nilgiris day trips. Visiting during the October–November northeast monsoon means checking the radar first, since this is when the Noyyal's tank network is most likely to back up.
- Why does Coimbatore get less rain than nearby Kerala cities like Kochi?
Coimbatore sits on the leeward side of the Western Ghats, a rain-shadow position that blocks much of the June–September southwest monsoon before it reaches the city, unlike windward coastal cities such as Kochi. The October–November northeast monsoon, which the Ghats don't block, becomes Coimbatore's real wet season instead — a reversal of the typical single-monsoon pattern seen elsewhere in India.
- Is there a live rain radar for Coimbatore?
Yes — RainViewer's hyperlocal radar for Coimbatore draws on India Meteorological Department (IMD) data, refreshed every five minutes, so a cell moving in during the northeast monsoon shows up as it forms. This is faster than a seasonal forecast that can't distinguish which of the city's two monsoons is active on a given day.
- Can I get a warning before rain hits Coimbatore?
Yes — RainViewer's rain alert can be set for a specific point, such as a textile mill district or a low-lying neighborhood along the Noyyal, and notifies before a detected cell arrives. Mill operators use this to secure outdoor stock ahead of the northeast monsoon's heaviest cells.
Track Rain in Coimbatore in Real Time
Running a textile mill or living along the Noyyal in Coimbatore? Check the radar before the northeast monsoon backs up the tanks.
Coimbatore's rain risk flips between two monsoons — one blocked by the Western Ghats, one amplified by them — which a seasonal average can't tell apart.
A forecast gives you "rain likely" for Coimbatore. A live hyperlocal radar shows you a northeast monsoon cell is already sitting over the Noyyal's tank network while the textile district stays dry — the difference between moving mill stock now and losing it to water that has nowhere to drain.
Track rain in Coimbatore — free Upgrade to Essential for alerts, forecasts, and full radar history
2-hour forecast in 5-minute slices
See whether a northeast monsoon cell over the city is building toward the kind of downpour that backs up the Noyyal's tank network.
Rain alerts before arrival
Set an alert for a textile mill district or a low-lying Noyyal neighborhood and get notified before a detected cell arrives.
Direction arrows on the map
Direction arrows show northeast monsoon cells arriving from the Bay of Bengal side before they reach Coimbatore's Noyyal catchment.
48 hours of radar history
Look back at how the last northeast monsoon cell built up before the Noyyal's tanks backed up, useful for spotting the same pattern early.
Multiple locations
Track the textile mill district, the Noyyal river, and Coimbatore International Airport at the same time — three points that matter for the city's industrial and travel economy.
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