Average Weather in Cusco Peru
In Cusco, the temperature typically varies from 32°F to 66°F over the course of the year, and is rarely below 28°F or above 71°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
The length of the day in Cusco varies over the course of the year. In 2017, the shortest day is June 21, with 11 hours, 20 minutes of daylight; the longest day is December 21, with 12 hours, 56 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:10 AM on November 21, and the latest sunrise is 1 hour, 2 minutes later at 6:12 AM on July 9. The earliest sunset is at 5:26 PM on May 31, and the latest sunset is 56 minutes later at 6:22 PM on January 22.
Daylight saving time (DST) is not observed in Cusco during 2017.
Sunrise & Sunset with Twilight
In Cusco, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.
The clearer part of the year in Cusco begins around May 7 and lasts for 4.3 months, ending around September 16. On July 24, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 57% of the time, and overcast or mostly cloudy 43% of the time.
The cloudier part of the year begins around September 16 and lasts for 7.7 months, ending around May 7. On January 16, the cloudiest day of the year, the sky is overcast or mostly cloudy 94% of the time, and clear, mostly clear, or partly cloudy 6% of the time.
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Cusco varies significantly throughout the year.
The wetter season lasts 4.4 months, from November 17 to March 29, with a greater than 27% chance of a given day being a wet day. The chance of a wet day peaks at 51% on January 15.
The drier season lasts 7.6 months, from March 29 to November 17. The smallest chance of a wet day is 2% on July 21.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 51% on January 15.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day in the year. Cusco experiences very significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 7.4 months, from September 18 to April 29, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around January 21, with an average total accumulation of 4.2 inches.
The rainless period of the year lasts for 4.6 months, from April 29 to September 18. The least rain falls around May 31, with and average total accumulation of 0.1 inches.
Average Monthly Rainfall
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
The perceived humidity level in Cusco, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.
Humidity Comfort Levels
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.The average hourly wind speed in Cusco does not vary significantly over the course of the year, remaining within 0.4 miles per hour of 2.9 miles per hour throughout.
Average Wind Speed
The predominant average hourly wind direction in Cusco is from the north throughout the year.
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.The average daily incident shortwave solar energy per square meter does not vary significantly over the course of the year, remaining within 0.4 kilowatt-hours of 5.4 kilowatt-hours throughout.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Cusco are -13.523 deg latitude, -71.967 deg longitude, and 11,647 ft elevation.
The topography within 2 miles of Cusco contains very significant variations in elevation, with a maximum elevation change of 1,614 feet, and an average elevation above sea level of 11,382 feet. Within 10 miles contains extreme variations in elevation (5,217 feet). Within 50 miles also contains extreme variations in elevation (18,212 feet).
The area within 2 miles of Cusco is covered by artificial surfaces (41%), shrubs (27%), and trees (12%), within 10 miles by grassland (43%) and shrubs (38%), and within 50 miles by grassland (43%) and shrubs (31%).
This report illustrates the typical weather in Cusco, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There is only a single weather station, Alejandro Velasco Astete International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Cusco.
At a distance of 3 kilometers from Cusco, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.
The station records are corrected for the elevation difference between the station and Cusco according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .