Visit the Rainbow Mountains
The Rainbow Mountain (Vinicunca) is acolored rainbow mountain that will steal your heart forever and the view from the top will take your breath away.
Tacna in December averages 26°C (79°F) during the day and 17°C (63°F) at night. Minimal rainfall is typical for this time of year.
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Pick a month to see the average temperature, rainfall and sunshine in Tacna - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Tacna typically stay consistent throughout December, with daily highs averaging around 26°C (79°F). Nights are pleasant, with lows around 16°C (61°F).
Browse day-by-day weather records for Tacna spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Find out more about the weather in Peru and which places have the best travel conditions in this month. See all of Peru in December →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Warm weather calls for comfortable, breathable clothing in December. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Almost no rain is expected, so no need to bring rain gear. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full Tacna climate overview or explore weather in Peru.
Where to go in December - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
Visit the Rainbow Mountains
The Rainbow Mountain (Vinicunca) is acolored rainbow mountain that will steal your heart forever and the view from the top will take your breath away.
"The other" Machu Picchu: the Inca City of Choquequirao
Discover Choquequirao, the hidden Inca city near Cusco. Hike through stunning landscapes and explore ancient ruins with fewer crowds than Machu Picchu.
Hike the inca Trail
Few walking tours speak so much to the imagination as the Inca Trail to Machu Picchu. The tour leads through beautiful mountain landscapes and it is called the 'Royal Highway'
The Inkaterra Reserva Amazonica
One of your highlights during a trip in Peru might be this eco-luxury lodge in front of the Madre de Dios River, called Inkaterra Reserva Amazonica.