Other facts from our historical weather data: When is the rainy season in Kalyān? Rainy season in Kalyān occurs in the months of June, July, August and September. Which is the hottest month in Kalyān? April has an average maximum temperature of 37°C (99°F) and is the hottest month of the year. Which is the coolest month in Kalyān? The coolest month is January with an average maximum temperature of 30°C (86°F). Which is the wettest month in Kalyān? July tops the wettest month list with 487mm (19.2 in) of rainfall. Which is the driest month in Kalyān? January is the driest month with 1mm (0 in) of precipitation. Which is the sunniest month in Kalyān? May is the sunniest month with an average of 296 hours of sunshine. 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.