December weather forecastCusco, Peru

Weather in December

December ushers in the culmination of the year marked with significant precipitation and cooler temperatures in Cusco, Peru. It stands as one of the rainiest months with significant rainfall registering at 123mm (4.84") marked across 16 days of the month. Nonetheless, the city's charm remains untouched, with the holiday season adding a warm festive glow. Despite the rainy conditions, travellers should bear in mind that when rain isn't present, the combination of high altitude and direct sun may feel warmer than anticipated. Enjoy the festive atmosphere, yuletide cuisine and the finest artisan crafts in a less crowded, authentic Cusco experience during this festive month.

Temperature

Cusco's weather, upon December's arrival, documents an average high-temperature of a still pleasant 20.8°C (69.4°F), nearly identical to the prior month. Despite high daytime temperatures, the average temperature in Cusco, Peru, lowers to a chilly 6.5°C (43.7°F) during December nights.

Humidity

The average relative humidity in December in Cusco is 59%.

Rainfall

In Cusco, Peru, in December, it is raining for 16 days, with typically 123mm (4.84") of accumulated precipitation. Throughout the year, in Cusco, there are 102 rainfall days, and 708mm (27.87") of precipitation is accumulated.

Daylight

With an average of 12h and 54min of daylight, December has the longest days of the year in Cusco.
On the first day of December, sunrise is at 05:11 and sunset at 18:03. On the last day of the month, sunrise is at 05:23 and sunset at 18:18 -05.

Sunshine

The average sunshine in December is 5.1h.

UV index

January through April, August through December, with an average maximum UV index of 12, are months with the highest UV index in Cusco. A UV Index value of 11, and more, symbolizes an extreme health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum UV index of 12 in December translates into the following recommendations:
Put into action all crucial precautions. Defense against sun damage is a must. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.