Historical Climate Data & Weather Trends (1981-2025)
Comprehensive climate analysis across 19 districts in West Bengal, India
West Bengal Climate Overview
West Bengal, India has an average annual temperature of 25.3°C, approximately 1400mm of rainfall per year, and average humidity of 67%. Temperatures range from 3.5°C in Darjiling to 45.2°C in Bankura. This page covers 45 years of historical climate data (1981–2025) across all 19 districts, sourced from NASA POWER — with monthly charts, yearly trends, and a full district comparison table.
☀️
Quick Climate Facts
(1981 - 2025)
State Avg
🌡️
Average Temperature
25.3°C
State Avg
❄️
Min Temperature
6.3°C
State Avg
🔥
Max Temperature
43.1°C
State Avg
🌧️
Average Rainfall
3.8 mm/day
State Avg
💧
Average Humidity
67.3%
State Avg
💨
Average Wind Speed
1.9 m/s
State Avg
📍
Number of Districts
19
State Avg
📅
Data Period
1981-2025
📊Monthly Climate Averages for West Bengal
📖Understanding West Bengal's Climate Patterns
These charts show monthly temperature and rainfall patterns for West Bengal, averaged across all 19 districts and 45 years of data. Use them to understand seasonal shifts — when monsoon arrives, which months are hottest, and how humidity peaks align with rainfall.
📈Long-term Climate Trends in West Bengal (1981-2025)
🌍Climate Change and Historical Weather Trends
This chart tracks how West Bengal's climate has changed from 1981 to 2025. Switch between Temperature, Rainfall, and Humidity tabs to spot long-term trends. Use the year range buttons to zoom into recent decades or view the full 45-year picture.
🌡️Yearly Temperature Trends(2016–2025)
Annual temp trends · 1981–2025 · °C
🗺️Climate Diversity Across West Bengal
Across its 19 districts, West Bengal has significant climate variation. Darjiling is the coolest district with average lows of 3.5°C, while Bankura reaches average highs of 45.2°C. Jalpaiguri is the wettest district at 5.0 mm/day. These differences are driven by altitude, proximity to water bodies, and geography.
Coldest District
Darjiling
3.5°C min
Hottest District
Bankura
45.2°C max
Wettest District
Jalpaiguri
5.0 mm/day
📍Weather Data for All 19 Districts in West Bengal
Click any district to view its full 45-year weather history — monthly patterns, yearly trends, and extreme records. Use search to find a specific district quickly.
The average annual temperature in West Bengal is 25.3°C based on 45 years of historical climate data from 1981 to 2025. Temperatures vary significantly across the state's 19 districts, ranging from an average minimum of 6.3°C to an average maximum of 43.1°C.
Bankura is the hottest district in West Bengal, with an average maximum temperature of 45.2°C and an average annual temperature of 25.4°C. This makes it one of the warmest areas in the state throughout the year.
Darjiling is the coldest district in West Bengal, with an average minimum temperature of 3.5°C and an average annual temperature of 18.4°C. Winter temperatures in this district can drop significantly below the state average.
West Bengal receives an average of 3.8 mm/day of rainfall, which translates to approximately 1400 mm annually. Rainfall varies considerably across districts, with Jalpaiguri being the wettest at 5.0 mm/day and Maldah being the driest at 3.0 mm/day.
Jalpaiguri receives the highest rainfall in West Bengal, averaging 5.0 mm/day or approximately 1828 mm per year. This district experiences significantly more precipitation compared to the state average, making it ideal for water-intensive agriculture.
The average relative humidity in West Bengal is 67.3%. Humidity levels vary across the state, with Paschim Medinapur having the highest average humidity at 72.7% and Maldah having the lowest at 61.8%. These variations affect local climate comfort and agricultural practices.
This comprehensive weather dataset covers all 19 districts in West Bengal. Each district's climate data has been collected from NASA POWER (Prediction of Worldwide Energy Resources) and includes 45 years of historical records from 1981 to 2025. The state-level statistics presented are calculated by averaging data across all districts.
All weather and climate data for West Bengal is sourced from NASA POWER (Prediction of Worldwide Energy Resources), which provides reliable meteorological data from NASA research. The data is based on the MERRA-2 Reanalysis with a spatial resolution of 0.5° x 0.625° and covers the period from 1981 to 2025. This ensures high-quality, scientifically validated climate information aggregated across all 19 districts in the state.
This comprehensive weather history can help farmers and agricultural planners in West Bengal make informed decisions about crop selection, planting schedules, and irrigation planning. The data shows that Jalpaiguri receives the most rainfall (5.0 mm/day), making it suitable for water-intensive crops, while Maldah receives less rainfall (3.0 mm/day) and may require more irrigation. Temperature variations across districts help determine suitable growing seasons for different crops. The 45-year dataset also helps identify long-term climate trends that may require adaptation in farming practices.
West Bengal shows significant climate diversity across its 19 districts. Temperature varies from 3.5°C in Darjiling to 45.2°C in Bankura. Rainfall patterns range from 3.0 mm/day in Maldah to 5.0 mm/day in Jalpaiguri. This diversity is influenced by factors such as altitude, proximity to water bodies, and geographical features, creating distinct microclimates within the state.
📚 Data Source & Methodology
All climate data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a NASA project providing satellite-derived meteorological data used globally by researchers and agricultural planners. State-level figures are calculated by averaging data across all 19 districts in West Bengal.