Summer Weather in Copiapó Chile

Daily high temperatures are around 79°F, rarely falling below 75°F or exceeding 84°F. The highest daily average high temperature is 81°F on January 29.

Daily low temperatures are around 62°F, rarely falling below 58°F or exceeding 66°F. The highest daily average low temperature is 63°F on January 31.

For reference, on January 29, the hottest day of the year, temperatures in Copiapó typically range from 63°F to 81°F, while on July 19, the coldest day of the year, they range from 50°F to 68°F.

The figure below shows you a compact characterization of the hourly average summer temperatures. 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.

Port Elizabeth, South Africa (5,505 miles away) and Antananarivo, Madagascar (7,201 miles) are the far-away foreign places with temperatures most similar to Copiapó (view comparison).

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The summer in Copiapó experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 14% to 10%. The lowest chance of overcast or mostly cloudy conditions is 9% on February 19.

The clearest day of the summer is February 19, with clear, mostly clear, or partly cloudy conditions 91% of the time.

For reference, on June 9, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 36%, while on February 19, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 91%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Copiapó, the chance of a wet day over the course of the summer is essentially constant, remaining around 1% throughout.

For reference, the year's highest daily chance of a wet day is 3% on June 10, and its lowest chance is 0% on November 25.

Over the course of the summer in Copiapó, the length of the day is rapidly decreasing. From the start to the end of the season, the length of the day decreases by 1 hour, 5 minutes, implying an average daily decrease of 44 seconds, and weekly decrease of 5 minutes, 8 seconds.

The shortest day of the summer is February 28, with 12 hours, 40 minutes of daylight and the longest day is December 20, with 13 hours, 52 minutes of daylight.

The earliest sunrise of the summer in Copiapó is 6:38 AM on December 1 and the latest sunrise is 55 minutes later at 7:33 AM on February 28.

The latest sunset is 8:41 PM on January 10 and the earliest sunset is 28 minutes earlier at 8:13 PM on February 28.

Daylight saving time is observed in Copiapó during 2024, but it neither starts nor ends during the summer, so the entire season is in standard time.

For reference, on December 21, the longest day of the year, the Sun rises at 6:43 AM and sets 13 hours, 52 minutes later, at 8:35 PM, while on June 20, the shortest day of the year, it rises at 7:30 AM and sets 10 hours, 25 minutes later, at 5:55 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 the summer of 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 Copiapó is essentially constant during the summer, 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 Copiapó is essentially constant during the summer, remaining within 0.4 miles per hour of 7.0 miles per hour throughout.

For reference, on January 9, the windiest day of the year, the daily average wind speed is 7.4 miles per hour, while on June 12, the calmest day of the year, the daily average wind speed is 4.4 miles per hour.

The highest daily average wind speed during the summer is 7.4 miles per hour on January 10.

The hourly average wind direction in Copiapó throughout the summer is predominantly from the west, with a peak proportion of 70% on December 23.

Copiapó is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in Copiapó is increasing during the summer, rising by 4°F, from 62°F to 66°F, over the course of the season.

The highest average surface water temperature during the summer is 67°F on February 10.

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).

Temperatures in Copiapó are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

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 Copiapó are very rapidly increasing during the summer, increasing by 1,778°F, from 1,814°F to 3,593°F, over the course of the season.

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 Copiapó is decreasing during the summer, falling by 1.3 kWh, from 9.2 kWh to 7.9 kWh, over the course of the season.

The highest average daily incident shortwave solar energy during the summer is 9.3 kWh on December 16.

For the purposes of this report, the geographical coordinates of Copiapó are -27.367 deg latitude, -70.331 deg longitude, and 1,302 ft elevation.

The topography within 2 miles of Copiapó contains very significant variations in elevation, with a maximum elevation change of 1,575 feet and an average elevation above sea level of 1,517 feet. Within 10 miles contains very significant variations in elevation (4,370 feet). Within 50 miles also contains extreme variations in elevation (15,335 feet).

The area within 2 miles of Copiapó is covered by bare soil (59%), trees (21%), and grassland (19%), within 10 miles by bare soil (61%) and trees (16%), and within 50 miles by bare soil (62%) and trees (11%).