The best season to go for West Champaran trip is during winter season in months of October to March. This time is really perfect for exploring the destination. Summer lasts in West Champaran between April and June with an average temperature 26°C to 44°C. Monsoon Season starts in West Champaran in July and continues till September with regular rainfall. Winter arrives in November and remains till February where average temperature remains between 16°C and 28°C making the weather pleasant. This is the best time for West Champaran travel.