If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Ciudad Del Este: The hottest months are usually January and December with an average temp of 79°F, while the coldest months are July and June with an average of 65°F. The rainiest months in Ciudad Del Este are October, December, January, and May, with each month seeing an average of 9 inches of rainfall.