The best time to visit Oruro is during the dry season, which runs from May to October, especially if you're interested in comfortable weather for exploring.During these months, you'll experience sunny days, clear skies, and cooler temperatures, making it pleasant for walking around the city and visiting its attractions. This period avoids the heavier rains of the wet season, ensuring your outdoor plans are less likely to be disrupted.However, if your primary interest is the renowned Oruro Carnival, then late February or early March is the best time to visit. This annual festival is a UNESCO Masterpiece of the Oral and Intangible Heritage of Humanity, featuring elaborate parades, traditional dances, and vibrant costumes.