Bengal Rain Forecast: IMD Warns of Heavy Showers This Week.

Kolkata, August 25, 2025

The Bengal rain forecast points to a wet and humid week ahead. The Meteorological Department announced that showers will continue across southern Bengal districts despite the weakening of an existing low-pressure system. Kolkata, Howrah, Hooghly, and surrounding areas should prepare for persistent rainfall, supported by a monsoon trough and a developing Bay of Bengal depression.

Bengal Rain Forecast: IMD Extends Rainfall Warning

The Indian Meteorological Department has issued a week-long Bengal rain forecast covering several districts. Although the low-pressure system over Gangetic Bengal has weakened, the monsoon trough remains active. Additionally, a fresh Bay of Bengal depression is likely to form near the Odisha–West Bengal coast, extending the rainy spell throughout the week.

South Bengal districts including North 24 Parganas, South 24 Parganas, and East Midnapore will face heavy showers with thunderstorms. Kolkata is expected to see intermittent rainfall accompanied by cloudy skies and sticky conditions.

Weakening Low Pressure, Persistent Showers

On Sunday, the low-pressure system over Gangetic Bengal lost intensity. This reduced rainfall across Kolkata, with only light drizzles recorded in parts of the city. However, the respite may be temporary.

The IMD noted that the monsoon trough continues to pass through Bengal, pulling in moisture from the Bay of Bengal. This pattern will sustain rainfall activity, even as the earlier low weakens. Kolkata residents witnessed overcast skies and high humidity levels despite a drop in downpour intensity.

Bengal Rain Forecast: Bay Depression to Intensify Rain

The upcoming Bengal rain forecast is strongly tied to the new system forming over the Bay of Bengal. According to meteorologists, this depression will move inland, bringing another round of showers across south Bengal. Here’s the rainfall forecast graph for Bengal, showing the expected rain distribution across the week.

Kolkata and nearby districts are expected to receive consistent rainfall during the early part of the week. The system could also intensify, leading to isolated heavy rainfall in coastal districts like East Midnapore and South 24 Parganas. Authorities have advised fishermen to avoid venturing into the sea during this period.

City Impact: Kolkata’s Cloudy Week Ahead

Kolkata residents are preparing for a mix of sunshine, drizzles, and cloudy skies. The city experienced reduced showers on Sunday, but humid weather made conditions uncomfortable. Forecasts suggest that rain will pick up again as the fresh Bay depression develops.

Commuters should anticipate waterlogging in low-lying areas, while traffic movement may be disrupted during peak showers. Outdoor events face high chances of interruptions due to sudden downpours.

Wider Context: Monsoon Activity in India

While Bengal prepares for a rainy week, the IMD has also issued alerts in several other states. Delhi, Rajasthan, Jharkhand, Arunachal Pradesh, and Jammu & Kashmir are also on rain watch due to monsoon activity. This highlights the wider impact of active weather systems across the country, with heavy showers expected in multiple regions.

Preparing for a Rain-Soaked Week

The Bengal rain forecast signals an extended spell of monsoon activity. Although the existing low-pressure has weakened, a new Bay depression is set to reinforce heavy showers across the state. Residents of Kolkata and nearby districts should remain alert for waterlogging, traffic disruptions, and increased humidity. With thunderstorms also predicted, precautionary measures remain crucial to manage the challenges of an active monsoon.

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