Climate and Average Weather Year Round in San Andrés de Giles Argentina

In San Andrés de Giles, the summers are warm, humid, wet, and mostly clear and the winters are cold and partly cloudy. Over the course of the year, the temperature typically varies from 40°F to 87°F and is rarely below 29°F or above 95°F.

Based on the tourism score, the best time of year to visit San Andrés de Giles for warm-weather activities is from mid October to mid April.

The hot season lasts for 3.4 months, from November 27 to March 8, with an average daily high temperature above 81°F. The hottest month of the year in San Andrés de Giles is January, with an average high of 86°F and low of 64°F.

The cool season lasts for 3.0 months, from May 21 to August 19, with an average daily high temperature below 64°F. The coldest month of the year in San Andrés de Giles is July, with an average low of 41°F and high of 59°F.

In San Andrés de Giles, 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 in San Andrés de Giles begins around September 19 and lasts for 7.2 months, ending around April 25.

The clearest month of the year in San Andrés de Giles is January, during which on average the sky is clear, mostly clear, or partly cloudy 71% of the time.

The cloudier part of the year begins around April 25 and lasts for 4.8 months, ending around September 19.

The cloudiest month of the year in San Andrés de Giles is June, during which on average the sky is overcast or mostly cloudy 53% of the time.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in San Andrés de Giles varies throughout the year.

The wetter season lasts 6.8 months, from September 28 to April 21, with a greater than 25% chance of a given day being a wet day. The month with the most wet days in San Andrés de Giles is February, with an average of 9.6 days with at least 0.04 inches of precipitation.

The drier season lasts 5.2 months, from April 21 to September 28. The month with the fewest wet days in San Andrés de Giles is July, with an average of 4.6 days with at least 0.04 inches of precipitation.

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 in San Andrés de Giles is February, with an average of 9.6 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 35% on January 25.

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. San Andrés de Giles experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in San Andrés de Giles. The month with the most rain in San Andrés de Giles is February, with an average rainfall of 4.9 inches.

The month with the least rain in San Andrés de Giles is July, with an average rainfall of 1.5 inches.

The length of the day in San Andrés de Giles varies significantly over the course of the year. In 2024, the shortest day is June 20, with 9 hours, 51 minutes of daylight; the longest day is December 21, with 14 hours, 28 minutes of daylight.

The earliest sunrise is at 5:38 AM on December 5, and the latest sunrise is 2 hours, 27 minutes later at 8:05 AM on June 29. The earliest sunset is at 5:53 PM on June 11, and the latest sunset is 2 hours, 20 minutes later at 8:14 PM on January 7.

Daylight saving time (DST) is not observed in San Andrés de Giles during 2024.

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.

San Andrés de Giles experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 4.8 months, from November 19 to April 12, during which time the comfort level is muggy, oppressive, or miserable at least 10% of the time. The month with the most muggy days in San Andrés de Giles is January, with 11.4 days that are muggy or worse.

The month with the fewest muggy days in San Andrés de Giles is July, with 0.1 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 in San Andrés de Giles experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 5.4 months, from July 10 to December 22, with average wind speeds of more than 8.7 miles per hour. The windiest month of the year in San Andrés de Giles is September, with an average hourly wind speed of 9.4 miles per hour.

The calmer time of year lasts for 6.6 months, from December 22 to July 10. The calmest month of the year in San Andrés de Giles is May, with an average hourly wind speed of 8.1 miles per hour.

The predominant average hourly wind direction in San Andrés de Giles varies throughout the year.

The wind is most often from the north for 5.1 months, from March 30 to September 2, with a peak percentage of 36% on May 20. The wind is most often from the south for 1.0 weeks, from September 2 to September 9, with a peak percentage of 30% on September 8. The wind is most often from the east for 6.7 months, from September 9 to March 30, with a peak percentage of 40% on January 1.

To characterize how pleasant the weather is in San Andrés de Giles 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 San Andrés de Giles for general outdoor tourist activities is from mid October to mid April, with a peak score in the second week of March.

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 San Andrés de Giles for hot-weather activities is from mid December to late February, with a peak score in the second 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).

The growing season in San Andrés de Giles typically lasts for 9.2 months (279 days), from around August 23 to around May 29, rarely starting before July 25 or after September 15, and rarely ending before May 5 or after June 22.

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.

Based on growing degree days alone, the first spring blooms in San Andrés de Giles should appear around July 28, only rarely appearing before July 19 or after August 11.

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 extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.5 months, from October 30 to February 14, with an average daily incident shortwave energy per square meter above 6.7 kWh. The brightest month of the year in San Andrés de Giles is December, with an average of 7.7 kWh.

The darker period of the year lasts for 3.5 months, from April 30 to August 13, with an average daily incident shortwave energy per square meter below 3.5 kWh. The darkest month of the year in San Andrés de Giles is June, with an average of 2.5 kWh.

For the purposes of this report, the geographical coordinates of San Andrés de Giles are -34.447 deg latitude, -59.445 deg longitude, and 167 ft elevation.

The topography within 2 miles of San Andrés de Giles contains only modest variations in elevation, with a maximum elevation change of 102 feet and an average elevation above sea level of 158 feet. Within 10 miles also contains only modest variations in elevation (190 feet). Within 50 miles also contains only modest variations in elevation (364 feet).

The area within 2 miles of San Andrés de Giles is covered by cropland (54%), grassland (17%), trees (15%), and shrubs (14%), within 10 miles by cropland (67%) and trees (13%), and within 50 miles by cropland (56%) and trees (14%).