Climate Insights for Sirajganj

The climate in Sirajganj is hot. The average annual temperature is 26°C and approximately 1906mm of precipitation falls per year. Juli is the wettest month, receiving around 329mm of rainfall. Sirajganj is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: April, Juni, September. The coldest months are Januar, Dezember, Februar, when temperatures can drop to 13°C.

Sirajganj sees moderate temperature variation throughout the year, ranging from 13°C to 33°C. The warmest month is April, when average highs reach 33°C and the mean temperature sits around 28°C. Januar is the coolest month, with minimum temperatures around 13°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 November and December, with a 4°C shift in average temperatures.

Sirajganj is a fairly wet location, receiving approximately 1906mm of precipitation annually, which averages out to around 159mm per month. The wettest month is July, averaging 329mm of rainfall. May and June also tend to see above-average precipitation. The driest month is January, with just 5mm. That's 324mm 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.

Sirajganj is mildly breezy, with an average annual wind speed of 12km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 9km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 7km/h gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 10km/h in winter, 14km/h in spring, 15km/h in summer, 10km/h in autumn.

It is currently winter in Sirajganj, which began on December 21, 2026. Sirajganj 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 April at around 33°C, while the coldest stretch bottoms out in Januar near 13°C. Spring is next, beginning on March 20, 2026 — 1 days from now.

The best time to visit Sirajganj is during Januar, Februar, November and Dezember, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 11mm per month. By contrast, April can be uncomfortably hot with temperatures reaching 33°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Sirajganj 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.