Climate and Average Weather Year Round in Libertador General San Martín Argentina

In Libertador General San Martín, the summers are warm, wet, and mostly clear and the winters are short, cold, dry, and partly cloudy. Over the course of the year, the temperature typically varies from 37°F to 84°F and is rarely below 27°F or above 92°F.

Based on the tourism score, the best time of year to visit Libertador General San Martín for warm-weather activities is from mid October to early April.

The warm season lasts for 4.0 months, from November 10 to March 8, with an average daily high temperature above 79°F. The hottest month of the year in Libertador General San Martín is January, with an average high of 84°F and low of 63°F.

The cool season lasts for 2.9 months, from May 17 to August 12, with an average daily high temperature below 63°F. The coldest month of the year in Libertador General San Martín is July, with an average low of 37°F and high of 58°F.

In Libertador General San Martín, 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 Libertador General San Martín begins around July 31 and lasts for 8.9 months, ending around April 26.

The clearest month of the year in Libertador General San Martín is March, during which on average the sky is clear, mostly clear, or partly cloudy 80% of the time.

The cloudier part of the year begins around April 26 and lasts for 3.2 months, ending around July 31.

The cloudiest month of the year in Libertador General San Martín is May, during which on average the sky is overcast or mostly cloudy 40% 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 Libertador General San Martín varies significantly throughout the year.

The wetter season lasts 4.9 months, from October 31 to March 29, with a greater than 23% chance of a given day being a wet day. The month with the most wet days in Libertador General San Martín is January, with an average of 12.6 days with at least 0.04 inches of precipitation.

The drier season lasts 7.1 months, from March 29 to October 31. The month with the fewest wet days in Libertador General San Martín is July, with an average of 1.2 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 Libertador General San Martín is January, with an average of 12.6 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 44% on December 28.

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. Libertador General San Martín experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.6 months, from September 2 to May 22, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Libertador General San Martín is January, with an average rainfall of 4.3 inches.

The rainless period of the year lasts for 3.4 months, from May 22 to September 2. The month with the least rain in Libertador General San Martín is June, with an average rainfall of 0.2 inches.

The length of the day in Libertador General San Martín varies significantly over the course of the year. In 2024, the shortest day is June 20, with 10 hours, 1 minute of daylight; the longest day is December 21, with 14 hours, 17 minutes of daylight.

The earliest sunrise is at 6:08 AM on December 4, and the latest sunrise is 2 hours, 17 minutes later at 8:24 AM on June 30. The earliest sunset is at 6:23 PM on June 10, and the latest sunset is 2 hours, 10 minutes later at 8:33 PM on January 8.

Daylight saving time (DST) is not observed in Libertador General San Martín 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.

Libertador General San Martín experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.9 months, from December 9 to April 7, during which time the comfort level is muggy, oppressive, or miserable at least 3% of the time. The month with the most muggy days in Libertador General San Martín is February, with 3.9 days that are muggy or worse.

The month with the fewest muggy days in Libertador General San Martín is July, 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 in Libertador General San Martín experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 4.4 months, from August 8 to December 20, with average wind speeds of more than 9.2 miles per hour. The windiest month of the year in Libertador General San Martín is October, with an average hourly wind speed of 10.6 miles per hour.

The calmer time of year lasts for 7.6 months, from December 20 to August 8. The calmest month of the year in Libertador General San Martín is May, with an average hourly wind speed of 7.8 miles per hour.

The predominant average hourly wind direction in Libertador General San Martín is from the north throughout the year.

To characterize how pleasant the weather is in Libertador General San Martín 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 Libertador General San Martín for general outdoor tourist activities is from mid October to early April, with a peak score in the first 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 Libertador General San Martín for hot-weather activities is from early December to early February, with a peak score in the first 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 Libertador General San Martín typically lasts for 8.7 months (264 days), from around September 4 to around May 26, rarely starting before August 11 or after September 27, and rarely ending before April 19 or after June 24.

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 Libertador General San Martín should appear around August 5, only rarely appearing before July 28 or after August 15.

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 24 to February 10, with an average daily incident shortwave energy per square meter above 7.1 kWh. The brightest month of the year in Libertador General San Martín is December, with an average of 8.1 kWh.

The darker period of the year lasts for 3.3 months, from April 29 to August 7, with an average daily incident shortwave energy per square meter below 4.1 kWh. The darkest month of the year in Libertador General San Martín is June, with an average of 3.1 kWh.

For the purposes of this report, the geographical coordinates of Libertador General San Martín are -32.411 deg latitude, -65.676 deg longitude, and 3,097 ft elevation.

The topography within 2 miles of Libertador General San Martín contains significant variations in elevation, with a maximum elevation change of 627 feet and an average elevation above sea level of 3,156 feet. Within 10 miles contains significant variations in elevation (2,986 feet). Within 50 miles contains large variations in elevation (7,802 feet).

The area within 2 miles of Libertador General San Martín is covered by shrubs (59%), grassland (16%), and trees (15%), within 10 miles by shrubs (72%) and trees (14%), and within 50 miles by shrubs (66%) and trees (17%).