Climate and Average Weather Year Round at Chacalluta Arica Airport Chile

At Chacalluta Arica Airport, the summers are warm, arid, and mostly cloudy and the winters are long, cool, dry, and mostly clear. Over the course of the year, the temperature typically varies from 58°F to 78°F and is rarely below 53°F or above 81°F.

Based on the tourism score, the best time of year to visit Chacalluta Arica Airport for warm-weather activities is from early March to late December.

The warm season lasts for 3.2 months, from December 25 to March 30, with an average daily high temperature above 76°F. The hottest month of the year at Chacalluta Arica Airport is February, with an average high of 78°F and low of 68°F.

The cool season lasts for 4.0 months, from June 8 to October 6, with an average daily high temperature below 67°F. The coldest month of the year at Chacalluta Arica Airport is August, with an average low of 59°F and high of 65°F.

At Chacalluta Arica Airport, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year at Chacalluta Arica Airport begins around April 11 and lasts for 6.8 months, ending around November 4.

The clearest month of the year at Chacalluta Arica Airport is August, during which on average the sky is clear, mostly clear, or partly cloudy 77% of the time.

The cloudier part of the year begins around November 4 and lasts for 5.2 months, ending around April 11.

The cloudiest month of the year at Chacalluta Arica Airport is February, during which on average the sky is overcast or mostly cloudy 65% of the time.

Chacalluta Arica Airport does not experience significant seasonal variation in the frequency of wet days (i.e., those with greater than 0.04 inches of liquid or liquid-equivalent precipitation). The frequency ranges from -0% to 1%, with an average value of 0%.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone at Chacalluta Arica Airport is February, with an average of 0.2 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 1% on February 26.

The length of the day at Chacalluta Arica Airport varies over the course of the year. In 2024, the shortest day is June 20, with 11 hours, 2 minutes of daylight; the longest day is December 21, with 13 hours, 14 minutes of daylight.

The earliest sunrise is at 6:43 AM on September 7, and the latest sunrise is 1 hour, 6 minutes later at 7:49 AM on April 6. The earliest sunset is at 6:12 PM on June 3, and the latest sunset is 2 hours, 12 minutes later at 8:24 PM on January 18.

Daylight saving time (DST) is observed at Chacalluta Arica Airport during 2024, starting in the spring on September 8 and ending in the fall on April 6.

The figure below presents a compact representation of key lunar data for 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.

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.

Chacalluta Arica Airport experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.7 months, from December 17 to April 9, during which time the comfort level is muggy, oppressive, or miserable at least 3% of the time. The month with the most muggy days at Chacalluta Arica Airport is February, with 3.0 days that are muggy or worse.

The month with the fewest muggy days at Chacalluta Arica Airport is September, with 0.0 days that are muggy or worse.

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 at Chacalluta Arica Airport experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 6.1 months, from September 13 to March 16, with average wind speeds of more than 7.8 miles per hour. The windiest month of the year at Chacalluta Arica Airport is November, with an average hourly wind speed of 8.6 miles per hour.

The calmer time of year lasts for 5.9 months, from March 16 to September 13. The calmest month of the year at Chacalluta Arica Airport is June, with an average hourly wind speed of 6.9 miles per hour.

The predominant average hourly wind direction at Chacalluta Arica Airport is from the south throughout the year.

Chacalluta Arica Airport 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 water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.0 months, from December 28 to March 30, with an average temperature above 72°F. The month of the year at Chacalluta Arica Airport with the warmest water is February, with an average temperature of 74°F.

The time of year with cooler water lasts for 3.9 months, from June 21 to October 17, with an average temperature below 65°F. The month of the year at Chacalluta Arica Airport with the coolest water is August, with an average temperature of 63°F.

To characterize how pleasant the weather is at Chacalluta Arica Airport throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Chacalluta Arica Airport for general outdoor tourist activities is from early March to late December, with a peak score in the second week of May.

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Chacalluta Arica Airport for hot-weather activities is from late December to early April, with a peak score in the last week of January.

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

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 at Chacalluta Arica Airport 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.

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 experiences significant seasonal variation over the course of the year.

The brighter period of the year lasts for 3.2 months, from October 1 to January 7, with an average daily incident shortwave energy per square meter above 7.4 kWh. The brightest month of the year at Chacalluta Arica Airport is November, with an average of 8.0 kWh.

The darker period of the year lasts for 2.7 months, from May 8 to July 31, with an average daily incident shortwave energy per square meter below 5.6 kWh. The darkest month of the year at Chacalluta Arica Airport is June, with an average of 5.0 kWh.

For the purposes of this report, the geographical coordinates of Chacalluta Arica Airport are -18.349 deg latitude, -70.339 deg longitude, and 177 ft elevation.

The topography within 2 miles of Chacalluta Arica Airport contains only modest variations in elevation, with a maximum elevation change of 302 feet and an average elevation above sea level of 175 feet. Within 10 miles contains only modest variations in elevation (2,028 feet). Within 50 miles contains large variations in elevation (15,640 feet).

The area within 2 miles of Chacalluta Arica Airport is covered by bare soil (97%), within 10 miles by bare soil (63%) and water (32%), and within 50 miles by bare soil (58%) and water (34%).