Weather will likely play an important role when you plan your trip to Juanchaco, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually March and February with an average temp of 77°F, while the coldest months are January and October with an average of 76°F. The rainiest months in Juanchaco are August, July, September, and June, with each month seeing an average of 69 inches of rainfall.