October Weather in Cusco Peru

Daily high temperatures are around 65°F, rarely falling below 59°F or exceeding 71°F.

Daily low temperatures increase by 2°F, from 41°F to 43°F, rarely falling below 37°F or exceeding 46°F.

For reference, on November 2, the hottest day of the year, temperatures in Cusco typically range from 43°F to 66°F, while on July 8, the coldest day of the year, they range from 32°F to 63°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on October. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

La Ciudad, Mexico (3,441 miles away) is the far-away foreign place with temperatures most similar to Cusco (view comparison).

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The month of October in Cusco experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 80% to 85%.

The clearest day of the month is October 1, with clear, mostly clear, or partly cloudy conditions 20% of the time.

For reference, on January 16, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 94%, while on July 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 57%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Cusco, the chance of a wet day over the course of October is very rapidly increasing, starting the month at 15% and ending it at 24%.

For reference, the year's highest daily chance of a wet day is 51% on January 15, and its lowest chance is 2% on July 20.

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during October in Cusco is increasing, starting the month at 0.9 inches, when it rarely exceeds 1.9 inches or falls below 0.1 inches, and ending the month at 1.6 inches, when it rarely exceeds 3.1 inches or falls below 0.4 inches.

Over the course of October in Cusco, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 22 minutes, implying an average daily increase of 44 seconds, and weekly increase of 5 minutes, 6 seconds.

The shortest day of the month is October 1, with 12 hours, 14 minutes of daylight and the longest day is October 31, with 12 hours, 35 minutes of daylight.

The latest sunrise of the month in Cusco is 5:30 AM on October 1 and the earliest sunrise is 17 minutes earlier at 5:13 AM on October 31.

The earliest sunset is 5:44 PM on October 1 and the latest sunset is 5 minutes later at 5:49 PM on October 31.

Daylight saving time is not observed in Cusco during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:18 AM and sets 12 hours, 56 minutes later, at 6:14 PM, while on June 20, the shortest day of the year, it rises at 6:09 AM and sets 11 hours, 20 minutes later, at 5:29 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for October 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

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 chance that a given day will be muggy in Cusco is essentially constant during October, remaining around 0% throughout.

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 is essentially constant during October, remaining within 0.2 miles per hour of 5.8 miles per hour throughout.

For reference, on September 13, the windiest day of the year, the daily average wind speed is 6.2 miles per hour, while on April 22, the calmest day of the year, the daily average wind speed is 4.6 miles per hour.

The hourly average wind direction in Cusco throughout October is predominantly from the north, with a peak proportion of 73% on October 1.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Cusco typically lasts for 8.8 months (268 days), from around August 26 to around May 21, rarely starting before August 3 or after September 17, and rarely ending before April 26 or after June 14.

The month of October in Cusco is reliably fully within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Cusco are gradually increasing during October, increasing by 144°F, from 362°F to 507°F, over the course of the month.

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 in Cusco is essentially constant during October, remaining around 5.6 kWh throughout.

For the purposes of this report, the geographical coordinates of Cusco are -13.523 deg latitude, -71.967 deg longitude, and 11,053 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 very significant 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%).