The best time to visit Puerto Valle for wildlife viewing and comfortable weather is during the dry season, from April to October.
During these months, the weather is generally cooler and drier, with pleasant temperatures that make exploring the Iberá wetlands more enjoyable. The lower water levels concentrate wildlife around the remaining water sources, making it easier to spot caimans, capybaras, and a wide variety of birds. This period is particularly good for nature enthusiasts and photographers looking to maximise their chances of encountering the region's diverse fauna.
For those who prefer warmer weather and don't mind occasional rain, the shoulder seasons of March and November can also be a good option. While there might be more rainfall, the temperatures are higher, and the wetlands are lush and green.