Climate and Average Weather Year Round at Pilar Observatorio Argentina
At Pilar Observatorio, the summers are warm, humid, and wet; the winters are short, cold, and dry; and it is mostly clear year round. Over the course of the year, the temperature typically varies from 41°F to 86°F and is rarely below 31°F or above 94°F.
Based on the tourism score, the best time of year to visit Pilar Observatorio for warm-weather activities is from early October to mid April.
Climate at Pilar Observatorio
Average Temperature at Pilar Observatorio
The hot season lasts for 3.8 months, from November 14 to March 9, with an average daily high temperature above 81°F. The hottest day of the year is January 8, with an average high of 86°F and low of 66°F.
The cool season lasts for 2.8 months, from May 21 to August 13, with an average daily high temperature below 66°F. The coldest day of the year is July 19, with an average low of 41°F and high of 62°F.
Average High and Low Temperature at Pilar Observatorio
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature at Pilar Observatorio
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
At Pilar Observatorio, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.
The clearer part of the year at Pilar Observatorio begins around July 31 and lasts for 9.1 months, ending around May 1. On March 15, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 79% of the time, and overcast or mostly cloudy 21% of the time.
The cloudier part of the year begins around May 1 and lasts for 2.9 months, ending around July 31. On June 1, the cloudiest day of the year, the sky is overcast or mostly cloudy 40% of the time, and clear, mostly clear, or partly cloudy 60% of the time.
Cloud Cover Categories at Pilar Observatorio
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Pilar Observatorio varies significantly throughout the year.
The wetter season lasts 5.9 months, from October 16 to April 12, with a greater than 23% chance of a given day being a wet day. The chance of a wet day peaks at 42% on January 1.
The drier season lasts 6.1 months, from April 12 to October 16. The smallest chance of a wet day is 3% on August 9.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 42% on January 1.
Daily Chance of Precipitation at Pilar Observatorio
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. Pilar Observatorio experiences extreme seasonal variation in monthly rainfall.
The rainy period of the year lasts for 9.3 months, from August 21 to May 30, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around January 12, with an average total accumulation of 5.0 inches.
The rainless period of the year lasts for 2.7 months, from May 30 to August 21. The least rain falls around June 20, with an average total accumulation of 0.2 inches.
Average Monthly Rainfall at Pilar Observatorio
The length of the day at Pilar Observatorio varies significantly over the course of the year. In 2021, the shortest day is June 21, with 10 hours, 5 minutes of daylight; the longest day is December 21, with 14 hours, 13 minutes of daylight.
Hours of Daylight and Twilight at Pilar Observatorio
The earliest sunrise is at 6:02 AM on December 4, and the latest sunrise is 2 hours, 13 minutes later at 8:15 AM on June 30. The earliest sunset is at 6:18 PM on June 10, and the latest sunset is 2 hours, 6 minutes later at 8:24 PM on January 8.
Daylight saving time (DST) is not observed at Pilar Observatorio during 2021.
Sunrise & Sunset with Twilight at Pilar Observatorio
The figure below presents a compact representation of key lunar data for 2021. 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.
Moon Rise, Set & Phases at Pilar Observatorio
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.
Pilar Observatorio experiences significant seasonal variation in the perceived humidity.
The muggier period of the year lasts for 4.8 months, from November 20 to April 13, during which time the comfort level is muggy, oppressive, or miserable at least 11% of the time. The muggiest day of the year is January 19, with muggy conditions 43% of the time.
The least muggy day of the year is July 20, when muggy conditions are essentially unheard of.
Humidity Comfort Levels at Pilar Observatorio
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 Pilar Observatorio experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 4.9 months, from July 16 to December 12, with average wind speeds of more than 5.3 miles per hour. The windiest day of the year is September 21, with an average hourly wind speed of 6.2 miles per hour.
The calmer time of year lasts for 7.1 months, from December 12 to July 16. The calmest day of the year is March 7, with an average hourly wind speed of 4.4 miles per hour.
Average Wind Speed at Pilar Observatorio
The predominant average hourly wind direction at Pilar Observatorio is from the north throughout the year.
Wind Direction at Pilar Observatorio
Best Time of Year to Visit
To characterize how pleasant the weather is at Pilar Observatorio 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 Pilar Observatorio for general outdoor tourist activities is from early October to mid April, with a peak score in the second week of March.
Tourism Score at Pilar Observatorio
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 Pilar Observatorio for hot-weather activities is from early December to mid February, with a peak score in the second week of January.
Beach/Pool Score at Pilar Observatorio
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 at Pilar Observatorio typically lasts for 9.9 months (302 days), from around August 18 to around June 16, rarely starting before July 19 or after September 16, and rarely ending before May 19 or after July 13.
Time Spent in Various Temperature Bands and the Growing Season at Pilar Observatorio
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
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 at Pilar Observatorio should appear around July 22, only rarely appearing before July 16 or after July 31.
Growing Degree Days at Pilar Observatorio
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 3.6 months, from October 23 to February 13, with an average daily incident shortwave energy per square meter above 6.9 kWh. The brightest day of the year is December 11, with an average of 7.8 kWh.
The darker period of the year lasts for 3.2 months, from May 1 to August 7, with an average daily incident shortwave energy per square meter below 4.1 kWh. The darkest day of the year is June 22, with an average of 3.1 kWh.
Average Daily Incident Shortwave Solar Energy at Pilar Observatorio
For the purposes of this report, the geographical coordinates of Pilar Observatorio are -31.667 deg latitude, -63.883 deg longitude, and 1,089 ft elevation.
The topography within 2 miles of Pilar Observatorio contains only modest variations in elevation, with a maximum elevation change of 118 feet and an average elevation above sea level of 1,094 feet. Within 10 miles also contains only modest variations in elevation (322 feet). Within 50 miles contains only modest variations in elevation (6,188 feet).
The area within 2 miles of Pilar Observatorio is covered by cropland (74%), within 10 miles by cropland (88%), and within 50 miles by cropland (74%) and shrubs (11%).
This report illustrates the typical weather at Pilar Observatorio, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
Pilar Observatorio has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.
In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for airports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.
The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.
We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.
We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.