No 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.
Home, office, kids' school - all at once, no switching tabs.
Get notified 15 minutes before rain - while you can still change your plans.
Live radar without opening the app - on your lock screen or home screen.
Karjat weather is set by the Ulhas Valley, where the town sits at the base of the Western Ghats near Lonavala and takes roughly 1,750mm of rain a year, with July alone bringing about 554mm. A hyperlocal radar for Karjat matters most in that peak month, when the same orographic lift that turns the valley into waterfalls and streams for tourists also brings landslide and flash-flood risk to the Ghats-adjacent terrain.
The mechanism is the Ulhas River, which originates near Tungarli Lake in Lonavala and flows north through Karjat, gathering monsoon runoff fast enough that river rafting operators suspend or run trips only during the monsoon — a direct indicator of how quickly water levels change here. The Western Ghats amplify rainfall intensity compared to the flatter Deccan Plateau further east, and the same Ulhas River is a documented contributing cause of Mumbai's annual monsoon flooding downstream. A Mumbai-region forecast built for the city cannot show a cell forming directly over Karjat's stretch of the valley hours before it reaches the coast.
RainViewer draws its Karjat feed from the India Meteorological Department (IMD), refreshed every 5 minutes, so the live map reflects new radar scans rather than a forecast written hours earlier. Karjat is the terminus of the electrified Mumbai Suburban Railway Central Line from CSMT, with connections to Khopoli and Panvel, and storm bands building over the Ghats show on the same sweep before they reach the valley floor. What the live map reveals and a forecast cannot: how fast a cell over the Ulhas Valley is intensifying before the river responds.
July is Karjat's wettest month at roughly 554mm, and the same rain that raises landslide and flash-flood risk in the Ghats also turns the valley into a trekking and waterfall tourism season, including the Ulhas Valley trek from Lonavla to Kondivade.
Rising heat and instability build ahead of the July onset, typical of the Ghats foothills. River rafting operators prepare for the monsoon-only season that follows.
Cool, comfortable weather makes this the steadiest stretch for trekking and outdoor activity without the flash-flood risk of peak monsoon. Rail traffic on the Mumbai–Pune corridor runs its most predictable schedule of the year.
As the terminus of the electrified Mumbai Suburban Railway Central Line from CSMT, with connections to Khopoli and Panvel, Karjat sees heavy daily commuter traffic. A commuter checking the radar before a monsoon evening can judge whether a Ghats-fed cell is likely to delay the line.
The 29.6km double-line corridor under construction to link Navi Mumbai and Karjat involves outdoor work exposed to sudden Ghats-adjacent downpours. A site supervisor watching the radar can decide whether to pause work ahead of a building cell.
Operators run trips only during the monsoon because water levels change too fast the rest of the year to be safe. Checking the radar before a trip shows whether a cell upstream near Tungarli Lake is likely to raise the river further during the outing.
The trek from Lonavla to Kondivade and Karjat's other monsoon waterfall routes draw visitors specifically for the wet-season scenery. A trekker checking the radar before setting out can avoid being caught on Ghats terrain during a landslide-risk downpour.
Karjat sits roughly halfway on this rail corridor, with regular shuttle trains and a known intermediate-stop food culture built around vada pav. Watching the radar before a journey shows whether monsoon rain over the Ghats is likely to slow the route.
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. Karjat sits at the edge of the Mumbai metropolitan radar corridor near Lonavala, so Ulhas Valley cells that later contribute to Mumbai's own flooding are visible here first.
The fastest way to know is a live hyperlocal radar, since Western Ghats orographic cells can turn a dry morning wet within minutes over the Ulhas Valley. RainViewer pulls fresh India Meteorological Department (IMD) radar scans every 5 minutes, so the map reflects current conditions rather than a forecast written hours earlier.
The trek is at its most scenic during the July–September monsoon, when waterfalls and streams are running, but the same rain brings landslide risk to the Ghats terrain. Checking the radar before setting out shows whether a cell is passing through or building over the route.
Heavy monsoon rain over the Ulhas Valley can slow the electrified Mumbai Suburban Railway Central Line through Karjat, the line's terminus from CSMT. Checking the radar before a commute shows whether a Ghats-fed cell is likely to delay the connection to Khopoli or Panvel.
Karjat's core risk is landslides and flash floods in the Ulhas Valley and surrounding Western Ghats terrain rather than town-wide flooding, and the Ulhas River itself is a documented contributor to Mumbai's downstream monsoon flooding. Trekkers and rafting operators near the river should track the radar closely once monsoon rain intensifies.
Winter offers Karjat's coolest, driest, and most predictable stretch for trekking and outdoor activity, well outside the July–September monsoon. Visitors should avoid July specifically, Karjat's wettest month at around 554mm, when landslide risk in the Ghats peaks.
The Ulhas River originates near Tungarli Lake in Lonavala and flows north through a valley shaped by Western Ghats orographic lift, which amplifies rainfall intensity compared to the flatter Deccan Plateau nearby. River rafting operators run trips only during monsoon because water levels change too quickly the rest of the year, which is why a live radar tracking the cell over the valley matters more here than a general Mumbai-region forecast.
Yes — RainViewer's hyperlocal radar for Karjat draws directly from the India Meteorological Department (IMD), refreshing every 5 minutes with new scans instead of a periodic forecast update. The map covers the Ulhas Valley corridor near Lonavala, so a building Ghats cell is visible before it reaches Karjat or moves toward Mumbai.
Yes — RainViewer's rain alerts can be set for a specific point like the Ulhas Valley trek route or Karjat railway station, so trekkers and commuters get a notification as a cell approaches instead of checking the map manually. That advance window is what lets a trekking group decide to turn back before a landslide-risk downpour arrives.
Trekkers on the Ulhas Valley route and commuters at Karjat railway station both depend on knowing how fast a Western Ghats cell is building. The same rain that feeds Karjat's monsoon waterfalls also raises the Ulhas River quickly enough that rafting operators run trips only during these months.
A generic forecast says monsoon showers for Karjat this week. RainViewer's live hyperlocal radar shows a cell already building over the Ulhas Valley while Karjat station stays dry — that is the lead time a trekking group gets every time a Western Ghats system builds.
Track rain in Karjat — free Upgrade to Essential for alerts, forecasts, and full radar history
See whether a cell over the Ulhas Valley is intensifying toward Karjat or breaking up in the next two hours.
Set an alert for the Ulhas Valley trek route and get notified before a system reaches the area.
See whether a cell is tracking in from Lonavala and the Western Ghats toward Karjat or sliding toward Khopoli.
Review the last 48 hours to see how fast a July cell built before the Ulhas River rose.
Track Karjat railway station, the Ulhas Valley trek route, and the Panvel–Karjat corridor construction site at the same time.