Although Bolivia is a country of climatic extremes, it is a destination that can be visited all year. The best time to visit the highland areas is April to October - this is the cooler winter period, but it should be dry with plenty of sunshine. In the southern Altiplano, the sky will be blue but it will be very cold, dropping to well below below freezing at night. The summer rainy season from November to March can cause some disruption on the roads, but travel is still possible, and the lower visitor numbers are a bonus of visiting at this time. The eastern lowlands, including Santa Cruz and the Amazon, enjoy warm temperatures year round.