If you’re hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Naguanagua: The hottest months are usually March and April, with an average temperature of 25°C, while the coldest months are January and February, with an average of 24°C. The rainiest months in Naguanagua are July, May, June and August, with each month seeing an average of 206 mm of rainfall.