§  West Bengal Weather Update

§  Winter Chill to Intensify This Weekend, Temperature to Drop Sharply

§  West Bengal weather update December 2025

§  Kolkata temperature to drop to 15°C by weekend

§  Cyclone Ditwah weakens. IMD forecast for North & South Bengal

West Bengal Weather: Winter is finally knocking on Bengal’s doors. After weeks of above-normal temperatures, the India Meteorological Department (IMD) Kolkata has announced that a significant temperature drop is expected across West Bengal by this weekend. Cyclone Ditwah, which caused widespread devastation in Sri Lanka and southern India has weakened into a depression over the Southwest Bay of Bengal and is no longer a threat to Bengal. The Alipore Weather Office predicts that Kolkata’s minimum temperature could plunge to 15°C by Friday-Saturday, while western districts may experience temperatures as low as 11-12°C. Dry weather conditions will prevail across both North and South Bengal with light fog expected in the early morning hours.​

Current Weather Situation: What’s Happening Now

·       Today’s Kolkata Weather (December 3, 2025)

The City of Joy woke up to a pleasant Wednesday morning with the minimum temperature recording 17.7°C, which is slightly below normal. Yesterday’s maximum temperature was 26.8°C and the relative humidity ranged between 43% to 86%. Northwestern winds are blowing across the city, bringing cooler air from the north.​

The IMD Kolkata has confirmed that clear skies and dry conditions will dominate the weather pattern for the next several days. There is no chance of rainfall anywhere in Bengal and the weather will remain predominantly dry.​

·       Why Temperature Remained High Until Now

Successive cyclonic systems in the Bay of Bengal including Cyclone Ditwah, disrupted the normal flow of cold northwestern winds into Bengal. The easterly winds from the sea kept temperatures elevated throughout November and early December. However, with Cyclone Ditwah now weakening and moving away, favorable conditions for winter have finally developed.​

Cyclone Ditwah Update: System Weakens to Depression

Cyclone Ditwah, which caused catastrophic flooding in Sri Lanka killing over 390 people, has significantly weakened as it approached the Indian coast. The system is now positioned in the Southwest Bay of Bengal and adjoining West-Central Bay of Bengal, approximately 40 kilometers off the Tamil Nadu, Puducherry and Andhra Pradesh coastline.​

Key Cyclone Ditwah Facts

·       Current Status: Weakened to Depression (Remnant of Cyclonic Storm)​

·       Position: Southwest Bay of Bengal, close to North Tamil Nadu coast​

·       Movement: Moving slowly south-southwestward at 3 kmph​

·       Forecast: Expected to weaken further into a well-marked low-pressure area within 12 hours​

·       Impact on Bengal: No direct impact; system has helped clear the path for winter winds​

The weakening of this cyclonic system is good news for Bengal, as it allows the cold northwesterly winds to flow unobstructed into the state.​

Western Disturbance Activity Over North India

Multiple Western Disturbances are currently active over Northwest India. One Western Disturbance with an associated cyclonic circulation is positioned over Haryana. A new Western Disturbance is expected to enter the region on December 5. Additionally, a separate cyclonic circulation exists over Northeast Assam.​

These weather systems contribute to the overall cooling pattern across North India, which indirectly benefits Bengal through enhanced cold air inflow.​

South Bengal Weather Forecast: Weekend Chill Expected

The Alipore Meteorological Department has issued detailed predictions for South Bengal indicating that winter conditions will strengthen significantly over the coming days.​

Temperature Trends

·       Temperatures have started dropping slightly across South Bengal​

·       Night temperatures are approaching normal levels in some areas​

·       Winter feel will increase during nights and early mornings​

Kolkata Specific Forecast

·       Current Minimum: 17.7°C (recorded Wednesday morning)​

·       Expected by Weekend: 15°C or below​

·       Week Forecast: Temperature could drop 2-4°C in the next 3-4 days​

·       Tuesday (Dec 2): Mercury was around 20°C​

·       Wednesday (Dec 3): Dropped to 17°C in the morning​

District-Level Predictions

·       Western Districts (Purulia, Bankura, West Medinipur, Jhargram): Minimum temperatures could fall to 11-12°C​

·       Birbhum: Temperatures may dip below 10°C​

·       Coastal Districts: Higher fog probability due to temperature fluctuations​

Fog Alert
Light fog is expected across all South Bengal districts due to temperature variations. Early morning fog probability is highest, particularly in coastal areas. Visibility may be affected during dawn hours.​

North Bengal Weather Forecast: Dry Conditions Continue

North Bengal will continue to experience dry weather conditions with no chance of rainfall in the immediate future.​

Current Conditions

·       Temperatures remain near normal levels​

·       Winter ambiance present during nights and mornings​

·       Daytime temperatures feel less cold​

·       Dry weather dominates the region​

District-Wise Temperature Overview

·       Darjeeling: Around 6°C (coldest in Bengal)​

·       Malda: Around 17°C​

·       Cooch Behar, Jalpaiguri, Alipurduar: Higher fog probability​

·       Hill Stations: Fog probability increasing by weekend​

Forecast for Coming Days

·       No significant temperature changes expected immediately​

·       Temperature may drop 2-3°C in the next three to four days​

·       After that, temperatures will stabilize​

·       Light fog possible in scattered areas during mornings​

·       Weekend will bring increased fog in hill areas​

Kolkata Detailed Weather Analysis

The capital city is preparing for its first significant cold spell of the season. The Regional Meteorological Centre Kolkata has provided detailed analysis for city residents.​

Current Observations

·       Minimum Temperature Today: 17.7°C​

·       Maximum Temperature (Yesterday): 26.8°C​

·       Humidity: 43% to 86%​

·       Wind Direction: Northwest​

·       Sky Condition: Mainly clear, partly cloudy in some areas​

7-Day Forecast for Kolkata

·       Thursday (Dec 4): Min 17°C, mostly clear

·       Friday (Dec 5): Min 17°C, fog likely in morning

·       Saturday (Dec 6): Min 16°C, winter feel intensifies

·       Sunday (Dec 7): Min 16°C, clear skies

·       Monday (Dec 8): Min 16°C, dry weather continues

·       Tuesday (Dec 9): Min 16°C, stable conditions

Key Weather Events This Week

·       Morning-evening winter chill will gradually increase​

·       By Friday/Saturday, mercury could drop to 15°C​

·       Northwest winds will strengthen the cooling effect​

·       No rainfall expected throughout the week​

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What This Means for Residents: Impact Analysis

Health Advisory
The sudden temperature drop requires precautionary measures. The IMD recommends that senior citizens and children take extra care during early mornings and late evenings when temperatures are lowest. Respiratory health may be affected by increased fog and cooler air.​

Travel Considerations
Morning fog in certain districts may affect visibility on highways, particularly in

·       Coastal districts of South Bengal​

·       Cooch Behar, Jalpaiguri and Alipurduar in North Bengal​

·       Hill areas including Darjeeling by weekend​

Travelers should plan early morning journeys with caution and check local weather updates.​

Agricultural Impact
The dry weather and temperature drop are favorable for winter crops (Rabi season). Farmers should monitor frost conditions in western districts where temperatures may fall significantly.​

IMD Outlook: What to Expect in Coming Weeks

The India Meteorological Department has released its seasonal outlook for the Cold Weather Season (December 2025 to February 2026). The forecast indicates

December 2025

·       Gradual decrease in minimum temperatures expected​

·       Mainly dry weather to prevail across Bengal​

·       South Bengal temperatures likely 2-3°C below normal​

·       North Bengal temperatures near normal with slight negative departure​

La Niña Effect
Meteorologists suggest that La Niña conditions may influence this winter’s intensity. La Niña typically brings cooler temperatures to the Indian subcontinent, potentially resulting in a more intense winter than recent years.​

Conclusion: Winter Finally Arrives in Bengal

After an unusually warm start to December, West Bengal is set to experience its first real taste of winter this weekend. With Cyclone Ditwah weakening and moving away from the coast, cold northwestern winds will flow freely into the state, bringing temperatures down significantly. Kolkata residents can expect the mercury to drop to 15°C by Friday-Saturday, while western districts may see temperatures as low as 11-12°C.​

The IMD forecasts dry weather conditions with no rainfall for the next several days. Morning fog is likely across many districts, particularly in coastal areas and North Bengal. Residents should prepare for cooler nights and mornings with the winter chill expected to intensify progressively throughout December.​

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