March Weather in Antofagasta Chile

Daily high temperatures decrease by 3°F, from 76°F to 73°F, rarely falling below 71°F or exceeding 79°F.

Daily low temperatures decrease by 2°F, from 64°F to 62°F, rarely falling below 59°F or exceeding 67°F.

For reference, on January 27, the hottest day of the year, temperatures in Antofagasta typically range from 65°F to 77°F, while on July 16, the coldest day of the year, they range from 55°F to 65°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on March. 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.

Plettenberg Bay, South Africa (5,529 miles away) is the far-away foreign place with temperatures most similar to Antofagasta (view comparison).

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The month of March in Antofagasta experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 18% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 17% on March 15.

The clearest day of the month is March 15, with clear, mostly clear, or partly cloudy conditions 83% of the time.

For reference, on June 13, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 27%, while on September 17, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 87%.

Over the course of March in Antofagasta, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 41 minutes, implying an average daily decrease of 1 minute, 23 seconds, and weekly decrease of 9 minutes, 40 seconds.

The shortest day of the month is March 31, with 11 hours, 51 minutes of daylight and the longest day is March 1, with 12 hours, 33 minutes of daylight.

The earliest sunrise of the month in Antofagasta is 7:37 AM on March 1 and the latest sunrise is 12 minutes later at 7:49 AM on March 31.

The latest sunset is 8:09 PM on March 1 and the earliest sunset is 29 minutes earlier at 7:40 PM on March 31.

Daylight saving time is observed in Antofagasta during 2024, but it neither starts nor ends during March, so the entire month is in standard time.

For reference, on December 21, the longest day of the year, the Sun rises at 6:52 AM and sets 13 hours, 36 minutes later, at 8:27 PM, while on June 20, the shortest day of the year, it rises at 7:23 AM and sets 10 hours, 41 minutes later, at 6:03 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 March 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 Antofagasta is essentially constant during March, remaining within 1% of 1% throughout.

For reference, on January 28, the muggiest day of the year, there are muggy conditions 4% of the time, while on May 10, the least muggy day of the year, there are muggy conditions 0% of the time.

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 Antofagasta is gradually decreasing during March, decreasing from 6.6 miles per hour to 6.0 miles per hour over the course of the month.

For reference, on January 24, the windiest day of the year, the daily average wind speed is 6.9 miles per hour, while on June 4, the calmest day of the year, the daily average wind speed is 5.0 miles per hour.

The hourly average wind direction in Antofagasta throughout March is predominantly from the west, with a peak proportion of 56% on March 1.

Antofagasta 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 Antofagasta is gradually decreasing during March, falling by 2°F, from 70°F to 68°F, over the course of the month.

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 Antofagasta 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 Antofagasta are rapidly increasing during March, increasing by 554°F, from 3,593°F to 4,147°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 Antofagasta is decreasing during March, falling by 1.1 kWh, from 7.7 kWh to 6.6 kWh, over the course of the month.

For the purposes of this report, the geographical coordinates of Antofagasta are -23.652 deg latitude, -70.395 deg longitude, and 102 ft elevation.

The topography within 2 miles of Antofagasta contains very significant variations in elevation, with a maximum elevation change of 1,611 feet and an average elevation above sea level of 400 feet. Within 10 miles contains very significant variations in elevation (3,750 feet). Within 50 miles also contains extreme variations in elevation (8,625 feet).

The area within 2 miles of Antofagasta is covered by water (27%), grassland (25%), trees (24%), and shrubs (13%), within 10 miles by water (42%) and bare soil (32%), and within 50 miles by bare soil (49%) and water (42%).