Weather is probably a major factor when you plan your trip to Planaltina, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually September and October, with an average temperature of 23°C, while the coldest months are July and June, with an average of 20°C. The rainiest months in Planaltina are November, December, January and March, with each month seeing an average of 272 mm of rainfall.