The monsoon may be moving toward its seasonal exit, but West Bengal is not ready to say goodbye to the rain just yet. A fresh low-pressure area over the northwest Bay of Bengal is expected to keep weather conditions unsettled across several parts of the state over the next few days.
The developing low-pressure system, combined with a cyclonic circulation and an active monsoon trough, is likely to trigger rainfall across both South Bengal and North Bengal. Some districts could receive moderate to heavy showers, while Kolkata may continue to experience scattered rain.
According to the latest forecast from the Alipore Meteorological Office, several parts of South Bengal could see rainfall through Tuesday, with isolated showers continuing in some areas until Wednesday. North Bengal is also expected to remain wet, particularly in the hills and Dooars.
Low-Pressure System Over Bay of Bengal Brings More Rain
The main weather system behind the current spell is a low-pressure area over the northwest Bay of Bengal. A cyclonic circulation is also associated with the system and extends several kilometers above sea level.
An active monsoon trough is adding to the unsettled conditions. The trough stretches across parts of northern India, then enters West Bengal and extends toward the Bay of Bengal through the low-pressure area.
Another weather line linked to the circulation extends toward Uttar Pradesh, Jharkhand, and Chhattisgarh. Together, these systems are creating favorable conditions for moisture-filled clouds and rainfall over West Bengal.
As a result, residents should expect changing weather conditions over the coming days, with some districts potentially receiving heavier showers.
South Bengal Rain Forecast: Which Districts Will Get Rain?
Rainfall will not be uniform across South Bengal. Some districts are expected to remain wet for a shorter period, while others may continue to receive showers into Tuesday or Wednesday.
Kolkata, Howrah, Hooghly, and East Burdwan may experience scattered rain through Monday. No major weather warning is currently expected for these districts after that period.
The situation is slightly different in North 24 Parganas, South 24 Parganas, and East Midnapore. These areas could receive rainfall through Tuesday, with isolated locations potentially seeing moderate-to-heavy showers.
Jhargram and Purulia may also receive heavy rain. People living in low-lying areas should remain cautious, as intense showers can quickly lead to waterlogging, particularly in poorly drained areas.
Other parts of South Bengal could see occasional showers through Wednesday. Rainfall is then expected to gradually decrease in many areas, although isolated showers may continue.
How Long Will It Rain in Kolkata?
Kolkata is also likely to remain under the influence of the weather system for the next couple of days.
The city could see scattered rain through Monday, with showers occurring at different times rather than as continuous rainfall throughout the day. At present, there is no indication of a prolonged spell of extremely heavy rain in Kolkata.
However, residents may continue to experience uncomfortable conditions due to high humidity.
Despite the rain, temperatures have remained relatively high. Kolkata recorded a minimum temperature of 28°C on Monday morning, around 1.4°C above normal. The city’s maximum temperature on Sunday reached 33.4°C, also around 1.4°C above the seasonal average.
This means rain may provide temporary relief from the heat, but the familiar combination of humidity, clouds, and warm temperatures could continue to make the weather feel sticky.
North Bengal Could See Heavy Rainfall
Rain is not limited to the southern districts. Several parts of North Bengal are also expected to receive showers, with the hills and Dooars likely to see some of the heaviest rainfall.
Darjeeling, Jalpaiguri, Kalimpong, and Alipurduar are likely to receive heavy rain on Tuesday. Rainfall activity may ease temporarily after that, but another increase is possible toward the end of the week.
Cooch Behar could also experience heavier rainfall from Friday.
Meanwhile, North Dinajpur, South Dinajpur, and Malda are not currently expected to receive significant heavy rain. Even so, these districts may still experience scattered showers through Wednesday.
Residents in North Bengal, especially those in hilly and landslide-prone areas, should remain alert during periods of intense rainfall.
Strong Winds and Rough Seas Along the Coast
The low-pressure system is also affecting conditions over the northern Bay of Bengal.
Winds may reach speeds of around 40 to 50 kilometers per hour, creating rough sea conditions. The combination of stronger winds and higher waves can make fishing activities dangerous.
Fishermen along the West Bengal and Odisha coasts have therefore been advised to remain cautious and avoid venturing into the sea while conditions remain unsettled.
Boats already at sea should return to safer locations as quickly as possible. Weather conditions over the Bay can change rapidly when a low-pressure system becomes more active.
Why Is West Bengal Still Getting Rain After the Monsoon?
The arrival of autumn does not always mean that rainfall immediately disappears from West Bengal.
Although the calendar may show that the main monsoon season is approaching its end, the atmosphere can still contain large amounts of moisture. The Bay of Bengal can also continue producing weather systems capable of bringing rain inland.
A low-pressure area acts like a focus point for moisture and rising air. When that system interacts with an active monsoon trough and favorable atmospheric conditions, clouds can develop, producing widespread showers.
That is essentially what is happening now. The combination of the Bay of Bengal low-pressure system, cyclonic circulation, and active monsoon trough is keeping rainfall chances alive across West Bengal.
When Will the Rain Decrease?
For South Bengal, scattered rainfall could continue in some districts until Wednesday. After that, rainfall activity is expected to gradually weaken in many areas.
North Bengal may follow a different pattern. While rainfall could ease temporarily, the hills and Dooars may see another increase toward the end of the week. Cooch Behar could also face heavier showers from Friday.
So, it is unlikely that there will be a single day when rain suddenly disappears across the entire state. Instead, rainfall will shift from one region to another depending on the movement and strength of the weather systems.
What Residents Should Expect
The coming days are likely to bring a mixture of sunshine, clouds, and sudden showers across West Bengal. Kolkata and several South Bengal districts may see intermittent rain, while parts of North Bengal could experience heavier downpours.
People traveling in Kolkata and other affected districts should keep an umbrella handy, particularly in the morning and afternoon, when sudden showers can disrupt traffic.
Residents in low-lying areas should also remain alert to possible waterlogging after intense rainfall. Coastal communities and fishermen should follow official weather advisories closely because rough sea conditions can become hazardous.
Overall, the Bay of Bengal low-pressure area is keeping West Bengal’s weather unsettled even as the season moves toward autumn. Rain may gradually decrease across parts of South Bengal after Wednesday, but North Bengal could remain vulnerable to renewed showers later in the week.
For now, the message is simple: the monsoon may be nearing its exit, but West Bengal still has several wet days ahead.
