Weather is probably a major factor when you plan your trip to Atacames, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually April and May, with an average temperature of 26°C, while the coldest months are August and September, with an average of 25°C. The rainiest months in Atacames are January, February, April and March, with each month seeing an average of 230 mm of rainfall.