Weather will likely play an important role when you plan your trip to Puerto Carreno, but bear 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 temperature of 30°C, while the coldest months are July and August, with an average of 26°C. The rainiest months in Puerto Carreno are June, July, May and August, with each month seeing an average of 338 mm of rainfall.