Weather Ecuador: The highland dry season is June through until the end of September. In the Oriente, it rains during most months, but August and December through March are usually the driest. In the Galápagos, the wildlife is there year-round. The dry season (June to December) is also cool and often misty. On the coast, the wet season (roughly January to May) sees sunny days with daily afternoon downpours, but it’s the best beach weather. The dry season (roughly June to December) is cooler.
Peru: From June to August is the dry season in the mountains and altiplano (Andean plateau); the wettest months are from December to March. It rains all the time in the hot and humid rainforest, but the driest months there are from June to September. However, even during the wettest months from December to May, it rarely rains for more than a few hours at a time.