Weather is probably a major factor when you plan your trip to Guasdualito, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually February and March with an average temp of 82°F, while the coldest months are July and June with an average of 77°F. The rainiest months in Guasdualito are June, July, May, and August, with each month seeing an average of 16 inches of rainfall.