Bolivia's climate is divided into two main seasons, each offering a unique experience for travelers. The dry winter, spanning May to October, is generally considered the high season, with clear skies and cooler temperatures making it ideal for exploring the Andean highlands, trekking, and visiting the Uyuni Salt Flats. This period, especially June through September, sees the most visitors and can mean slightly higher prices for tours and accommodations, along with increased crowds.
Conversely, the wet summer, from November to April, transforms the landscape into lush, vibrant greens, particularly in the Amazon basin. While some highland roads might be less accessible due to rain, this low season period, notably January, February, and March, offers fewer crowds, potentially lower prices, and a unique perspective on Bolivia's natural beauty, including the iconic 'mirror effect' on the salt flats if conditions are right.