If you’re looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Chiltiupan: The hottest months are usually March and April, with an average temperature of 25°C, while the coldest months are January and December, with an average of 24°C. The rainiest months in Chiltiupan are September, June, October and May, with each month seeing an average of 245 mm of rainfall.