January weather forecast
Cusco, Peru

The weather in January in Cusco, Peru, marks the start of the year with conditions typically damp and a bit chilly. While daily sunshine decreases compared to the latter part of the previous year, rainfall does surge this month, peaking at 145mm (5.71"), making it the wettest month. As January is fully immersed in the wet season, rain showers can be expected on around 18 days of the month. Despite these rain showers, Cusco remains an attractive destination for weather-hardy tourists who can manage cooler nighttime temperatures. The UV index remains high, urging residents and visitors alike to keep sun protection in mind even on cloudy days.

Temperature

The yearly lowest temperatures in Cusco occur in January and February, averaging a high-temperature of 18.8°C (65.8°F).

Humidity

In Cusco, the average relative humidity in January is 64%.

Rainfall

The month with the most rainfall in Cusco is January, when the rain falls for 18 days and typically aggregates up to 145mm (5.71") of precipitation.

Daylight

In January, the average length of the day is 12h and 49min.
On the first day of the month, sunrise is at 05:24 and sunset at 18:18. On the last day of January, sunrise is at 05:40 and sunset at 18:22 -05.

Sunshine

The average sunshine in January in Cusco is 4.6h.

UV index

The months with the highest UV index in Cusco, Peru, are January through April, August through December, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an excessive health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily high UV index of 12 in January leads to these guidelines:
Practice every precaution of necessity, unprotected skin and eyes might burn in minutes. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.