If you're hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Tranqueras: The hottest months are usually January and February with an average temp of 74°F, while the coldest months are July and June with an average of 56°F. The rainiest months in Tranqueras are September, October, November, and January, with each month seeing an average of 7 inches of rainfall.