If you're looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Sreemangal: The hottest months are usually April and March, with an average temperature of 27°C, while the coldest months are January and December, with an average of 21°C. The rainiest months in Sreemangal are May, June, August and July, with each month seeing an average of 414 mm of rainfall.