Cusco, Peru, situated high in the Andes Mountains, experiences distinct dry and wet seasons. December falls within the cusp of the transition from the dry to the wet season. This period typically sees increasing rainfall and humidity compared to the preceding months, with daytime temperatures averaging in the high teens Celsius (mid-60s Fahrenheit). Nighttime temperatures drop significantly due to the high altitude, often reaching near or below freezing.
Understanding the climatic conditions prevalent in the Andes during this transitional month is crucial for travelers. Appropriate clothing for both warm days and cold nights is essential. The shift towards the rainy season also necessitates preparation for potential downpours and their impact on travel plans and outdoor activities. Historical weather patterns inform expectations, allowing visitors to pack and plan accordingly. This knowledge also benefits local communities and businesses relying on agriculture and tourism.