Average Weather In July For Cusco, Peru

Location

This report describes the typical weather at the Subteniente FAP Alejandro Velasco Astete International Airport (Cusco, Peru) weather station over the course of an average July. It is based on the historical records from 1987 to 2012. Earlier records are either unavailable or unreliable.

Cusco has a mild temperate climate with dry winters and warm summers. The area within 25 mi of this station is covered by grasslands (86%), shrublands (5%), and croplands (5%).

Temperature

The month of July is characterized by essentially constant daily high temperatures, with daily highs around 67°F throughout the month, exceeding 71°F or dropping below 61°F only one day in ten.

Daily High and Low Temperature in July

The daily average low (blue) and high (red) temperature with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).
Daily low temperatures are around 35°F, falling below 30°F or exceeding 40°F only one day in ten.

Fraction of Time Spent in Various Temperature Bands in July

The average fraction of time spent in various temperature bands: frigid (below 15°F), freezing (15°F to 32°F), cold (32°F to 50°F), cool (50°F to 65°F), comfortable (65°F to 75°F), warm (75°F to 85°F), hot (85°F to 100°F) and sweltering (above 100°F).

Sun

Over the course of July, the length of the day is essentially constant. The shortest day of the month is July 5 with 11:21 hours of daylight; the longest day is July 31 with 11:32 hours of daylight.

Daily Hours of Daylight and Twilight in July

The number of hours during which the Sun is visible (black line), with various degrees of daylight, twilight, and night, indicated by the color bands. From bottom (most yellow) to top (most gray): full daylight, solar twilight (Sun is visible but less than 6° from the horizon), civil twilight (Sun is not visible but is less than 6° below the horizon), nautical twilight (Sun is between 6° and 12° below the horizon), astronomical twilight (Sun is between 12° and 18° below the horizon), and full night.

The earliest sunrise is at 6:08am on July 31; the latest sunset is at 5:40pm on July 31; the latest sunrise is at 6:12am on July 6; the earliest sunset is at 5:32pm on July 1.

Daylight savings time (DST) is not observed in 2012.

Daily Sunrise & Sunset with Twilight in July

The solar day over the course of the year 2012 . From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (solar, civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Clouds

The median cloud cover is 14% (mostly clear) and does not vary substantially over the course of the month.

Median Cloud Cover in July

The median daily cloud cover (black line) with percentile bands (inner band from 40th to 60th percentile, outer band from 25th to 75th percentile).

On July 16, a representative day, the sky is clear or mostly clear 73% of the time, partly cloudy 13% of the time, and mostly cloudy or overcast 10% of the time.

Cloud Cover Types in July

The fraction of time spent in each of the five sky cover categories. From top (most blue) to bottom (most gray), the categories are clear, mostly clear, partly cloudy, mostly cloudy, and overcast. Pink indicates missing data. Outside of the United States clear skies are often reported ambiguously, leading them to be lumped in with the missing data.

Precipitation

The average probability that some form of precipitation will be observed in a given day is 9%, with little variation over the course of the month.

Probability of Precipitation at Some Point in the Day in July

The fraction of days in which various types of precipitation are observed. If more than one type of precipitation is reported in a given day, the more severe precipitation is counted. For example, if light rain is observed in the same day as a thunderstorm, that day counts towards the thunderstorm totals. The order of severity is from the top down in this graph, with the most severe at the bottom.

Throughout July, the most common forms of precipitation are light rain, drizzle, and moderate rain.

Light rain is the most severe precipitation observed during 39% of those days with precipitation. It is most likely around July 31, when it is observed during 4% of all days.

Drizzle is the most severe precipitation observed during 31% of those days with precipitation. It is most likely around July 30, when it is observed during 3% of all days.

Moderate rain is the most severe precipitation observed during 27% of those days with precipitation. It is most likely around July 24, when it is observed during 3% of all days.

Types of Precipitation Throughout July

Relative frequency of various types of precipitation over the course of a typical July.

Snow

Either snow is exceptionally unlikely to fall at this location in July or this station does not reliably report precipitation types.

Humidity

The relative humidity typically ranges from 25% (dry) to 89% (very humid) over the course of a typical July, rarely dropping below 13% (very dry) and reaching as high as 100% (very humid).

The air is driest around July 30, at which time the relative humidity drops below 32% (comfortable) three days out of four; it is most humid around July 1, rising above 81% (humid) three days out of four.

Relative Humidity in July

The average daily high (blue) and low (brown) relative humidity with percentile bands (inner bands from 25th to 75th percentile, outer bands from 10th to 90th percentile).

Dew Point

Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.

Over the course of a typical July, the dew point typically varies from 25°F (dry) to 38°F (dry) and is rarely below 15°F (dry) or above 43°F (dry).

Dew Point in July

The daily average low (blue) and high (red) dew point with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

Wind

Over the course of July typical wind speeds vary from 0 mph to 13 mph (calm to moderate breeze), rarely exceeding 20 mph (fresh breeze).

The highest average wind speed of 3 mph (light air) occurs around July 22, at which time the average daily maximum wind speed is 13 mph (moderate breeze).

The lowest average wind speed of 3 mph (light air) occurs around July 1, at which time the average daily maximum wind speed is 11 mph (gentle breeze).

Wind Speed in July

The average daily minimum (red), maximum (green), and average (black) wind speed with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).
The wind direction is highly variable and is not predominantly from any single direction.The wind is least often out of the south (1% of the time), south west (1% of the time), south east (2% of the time), north east (5% of the time), and north west (5% of the time).

Wind Directions in July

The fraction of time spent with the wind blowing from the various directions over the entire year. Values do not sum to 100% because the wind direction is undefined when the wind speed is zero.

Fraction of Time Spent with Various Wind Directions in July

The fraction of time spent with the wind blowing from the various directions on a daily basis. Stacked values do not always sum to 100% because the wind direction is undefined when the wind speed is zero.