The best time to visit Samastipur is from October to March when the weather is not very harsh.
The summers of Samastipur are unrelenting. The summers can be really hot with the temperature reaches up to 45 degree Celsius. May is the hottest month out here.
The monsoon season is from June to September. Rainfall is plentiful during the short monsoon season. The post monsoon months of October and November are milder and temperatures can be much lower during this period and this is the preferred time to visit for many tourists.
The winter season starts in the month of December and extends till the end of February. Temperatures can drop to around 6 degree Celsius during this time. The conditions are usually dry during the winter.