Climate Insights for Rājbirāj

The climate in Rājbirāj is hot. The average annual temperature is 26°C and approximately 1891mm of precipitation falls per year. July is the wettest month, receiving around 452mm of rainfall. Rājbirāj is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: April, August, March. The coldest months are January, December, February, when temperatures can drop to 12°C.

Temperatures in Rājbirāj vary considerably across the year, with a 27°C difference between the coldest and warmest months. April is the hottest month, with daytime highs reaching 39°C and an average of 31°C. January is the coolest month, with minimum temperatures around 12°C and an average of 17°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 5°C shift in average temperatures.

Rājbirāj is a fairly wet location, receiving approximately 1891mm of precipitation annually, which averages out to around 158mm per month. The wettest month is July, averaging 452mm of rainfall. September and June also tend to see above-average precipitation. The driest month is November, with just 0mm. That's 451mm 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.

Rājbirāj is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 3km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.

It is currently summer in Rājbirāj, which began on June 21, 2026. Rājbirāj 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 39°C, while the coldest stretch bottoms out in January near 12°C. Autumn is next, beginning on September 23, 2026 — 52 days from now.

The best time to visit Rājbirāj is during January, February, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 4mm per month. By contrast, April can be uncomfortably hot with temperatures reaching 39°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Rājbirāj 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.