Kolkata Weather Today: Fresh Bay System Keeps City Under Rain Cloud, More Showers Likely Through Weekend

Kolkata, August 29, 2026: Kolkata is likely to remain firmly in the grip of an active monsoon pattern on Saturday, with a predominantly cloudy sky, intermittent rain and a heightened possibility of thunderstorms keeping the city’s weather unsettled. The latest forecasts indicate that the spell of wet weather is unlikely to be a one-day affair, with rain expected to continue across Kolkata and adjoining areas through the weekend.

The renewed spell has been linked to a developing low-pressure system over the Bay of Bengal, which is expected to strengthen monsoon activity over eastern India. According to the latest weather reports, the system is likely to influence West Bengal over the coming days, bringing periodic showers and potentially heavier bursts of rain to several parts of the state.

For Kolkata, the immediate picture is one of clouds, humidity and intermittent precipitation rather than a prolonged spell of torrential rain. Rain may arrive in phases, with breaks between showers, while thunderstorms and gusty winds could accompany some spells. The combination of moisture-laden air and persistent cloud cover is also expected to keep the atmosphere oppressive, particularly when rainfall pauses.

The broader meteorological situation, however, warrants attention. The India Meteorological Department has forecast widespread rainfall across Gangetic West Bengal and several neighbouring eastern and northeastern regions on Saturday. Thunderstorms, lightning and gusty winds are also possible in parts of the region.

While Kolkata may escape the most intense rainfall expected in some coastal and southern Bengal districts, the city is not entirely insulated from the system’s effects. South 24 Parganas and East Midnapore are among the areas facing a greater likelihood of heavy rainfall, while several other districts of south Bengal could also experience spells of significant rain.

For the city, the principal concern could once again shift from rainfall alone to its cascading effects on urban life. Sudden downpours can slow traffic dramatically, overwhelm vulnerable stretches of the drainage network and leave low-lying pockets waterlogged. Commuters travelling during or immediately after a heavy spell may therefore encounter delays, particularly on roads already carrying substantial monsoon runoff.

The weather is also expected to remain unsettled beyond Saturday. Forecast guidance indicates occasional rain on Sunday and Monday, followed by continued chances of rain into the opening days of September. This suggests that Kolkata could experience a prolonged sequence of cloudy and humid days rather than a rapid return to predominantly dry conditions.

The temperature pattern is correspondingly subdued. With cloud cover and rain limiting solar heating, daytime temperatures are expected to remain around the low 30s Celsius, while nighttime temperatures could stay in the mid-20s. Yet the relatively moderate mercury reading may not translate into comfortable conditions because high atmospheric moisture can make the air feel considerably warmer and heavier than the thermometer suggests.

The fresh weather system also comes at a time when the wider eastern region is witnessing an active monsoon phase. The IMD’s latest national outlook points to significant rainfall over parts of Odisha, Jharkhand, Bihar, the Northeast and Gangetic West Bengal, with isolated heavy to very heavy rainfall possible in some areas.

For Kolkata residents, Saturday’s weather therefore calls for a mixture of preparedness and caution. An umbrella or raincoat is likely to remain useful, while motorists should be particularly careful during thunderstorms and sudden heavy showers. People should avoid exposed locations during lightning activity and keep themselves updated with local weather advisories if travelling across the city.

The larger takeaway from Saturday’s forecast is that Kolkata’s monsoon is showing no immediate signs of retreat. With another low-pressure system developing over the Bay and moisture continuing to feed into eastern India, the city is likely to remain under a fluctuating cycle of clouds, showers and humid conditions over the next several days.

For a city accustomed to monsoon disruptions, the coming weekend could once again test Kolkata’s drainage, traffic and commuter resilience. The rain may not be relentless throughout the day, but the possibility of sudden, intense spells means the weather could change quickly — turning an apparently routine August morning into a wet and difficult commute within a short span of time.The key difference here is that the report focuses on the developing Bay of Bengal system, its urban impact and the weekend outlook, rather than simply repeating temperature and rain figures.