Weather will likely play an important role when you plan your trip to Chincha Alta, 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 70°F, while the coldest months are October and September with an average of 63°F. From January through March, the daytime average is 75°F and the nighttime average is 64°F. Between April and June, temperatures average 75°F during the day and 62°F at night. July through September averages 70°F during the day and 58°F at night. In October-December, the average temperature is 71°F during the day and 57°F at night.