Planning for the weather is an important factor for making your trip to Madhepura a success, especially when you're splurging. The hottest months are usually April and May, with an average temperature of 30°C, while the coldest months are January and December, with an average of 20°C. The rainiest months in Madhepura are July, August, September and June, with each month seeing an average of 352 mm of rainfall.