Other facts from our historical weather data: Which months have the greatest rainfall in Ratlām? Most rainfall (rainy season) is seen in July and August. Which is the wettest month in Ratlām? July tops the wettest month list with 335mm (13.2 in) of rainfall. Which is the driest month in Ratlām? April is the driest month with 3mm (0.1 in) of precipitation. No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.