Planning for the weather is an important factor for making your trip to Madiun a success, especially when you're splurging. The hottest months are usually October and September, with an average temperature of 27°C, while the coldest months are July and August, with an average of 26°C. The rainiest months in Madiun are February, March, December and January, with each month seeing an average of 402 mm of rainfall.