Climate Overview
The climate in Biswanath Chariali is warm and mild. The average annual temperature is 24°C and approximately 2884mm of precipitation falls per year. July is the wettest month, receiving around 565mm of rainfall. Biswanath Chariali is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, June, September. The coldest months are January, December, February, when temperatures can drop to 12°C.
Temperature
Temperatures in Biswanath Chariali vary considerably across the year, with a 21°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 33°C and the mean temperature sits around 29°C. January is the coolest month, with minimum temperatures around 12°C and an average of 17°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows. The sharpest temperature change occurs between October and November, with a 4°C shift in average temperatures.
Precipitation
Biswanath Chariali is a very wet location, receiving approximately 2884mm of precipitation annually, which averages out to around 240mm per month. The wettest month is July, averaging 565mm of rainfall. June and August also tend to see above-average precipitation. The driest month is December, with just 13mm. That's 552mm less than July, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.
Wind
Biswanath Chariali is relatively calm, with an average annual wind speed of 1km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.
Seasons
85 days until Autumn
It is currently summer in Biswanath Chariali, which began on June 21, 2026. Biswanath Chariali is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 33°C, while the coldest stretch bottoms out in January near 12°C. Autumn is next, beginning on September 23, 2026 — 85 days from now.
Spring
Temperatures range from 18 to 30°C. Rainfall is heavy, totalling around 780mm across the season with a monthly average of 260mm. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 26 to 33°C. Rainfall is heavy, totalling around 1439mm across the season with a monthly average of 480mm. Winds are generally light, averaging 1km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 17 to 31°C. Rainfall is heavy, totalling around 579mm across the season with a monthly average of 193mm. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 12 to 26°C. Rainfall is relatively light, with around 87mm over the season and a monthly average of 29mm. Winds are generally light, averaging 1km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Biswanath Chariali is during January, February, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 26mm per month. By contrast, August can be uncomfortably hot with temperatures reaching 33°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.
Monthly Climate Data
The table below shows monthly climate averages for Biswanath Chariali based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
