Climate and Average Weather Year Round in Arroyo del Medio Argentina

In Arroyo del Medio, the summers are hot and muggy, the winters are short and cool, and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 50°F to 88°F and is rarely below 37°F or above 95°F.

Based on the tourism score, the best times of year to visit Arroyo del Medio for warm-weather activities are from late February to mid May and from early September to mid December.

The hot season lasts for 3.9 months, from November 22 to March 18, with an average daily high temperature above 84°F. The hottest month of the year in Arroyo del Medio is January, with an average high of 88°F and low of 68°F.

The cool season lasts for 2.9 months, from May 15 to August 11, with an average daily high temperature below 72°F. The coldest month of the year in Arroyo del Medio is July, with an average low of 51°F and high of 69°F.

In Arroyo del Medio, 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 in Arroyo del Medio begins around February 23 and lasts for 2.8 months, ending around May 17.

The clearest month of the year in Arroyo del Medio is March, during which on average the sky is clear, mostly clear, or partly cloudy 67% of the time.

The cloudier part of the year begins around May 17 and lasts for 9.2 months, ending around February 23.

The cloudiest month of the year in Arroyo del Medio is June, during which on average the sky is overcast or mostly cloudy 43% 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 Arroyo del Medio varies throughout the year.

The wetter season lasts 7.3 months, from September 18 to April 27, with a greater than 35% chance of a given day being a wet day. The month with the most wet days in Arroyo del Medio is February, with an average of 12.6 days with at least 0.04 inches of precipitation.

The drier season lasts 4.7 months, from April 27 to September 18. The month with the fewest wet days in Arroyo del Medio is August, with an average of 8.4 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 Arroyo del Medio is February, 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 45% on February 8.

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. Arroyo del Medio experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Arroyo del Medio. The month with the most rain in Arroyo del Medio is October, with an average rainfall of 8.1 inches.

The month with the least rain in Arroyo del Medio is August, with an average rainfall of 3.8 inches.

The length of the day in Arroyo del Medio varies over the course of the year. In 2024, the shortest day is June 20, with 10 hours, 23 minutes of daylight; the longest day is December 21, with 13 hours, 54 minutes of daylight.

The earliest sunrise is at 5:37 AM on December 1, and the latest sunrise is 1 hour, 55 minutes later at 7:33 AM on July 2. The earliest sunset is at 5:53 PM on June 9, and the latest sunset is 1 hour, 48 minutes later at 7:42 PM on January 11.

Daylight saving time (DST) is not observed in Arroyo del Medio 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.

Arroyo del Medio experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 6.9 months, from October 8 to May 5, during which time the comfort level is muggy, oppressive, or miserable at least 23% of the time. The month with the most muggy days in Arroyo del Medio is January, with 22.8 days that are muggy or worse.

The month with the fewest muggy days in Arroyo del Medio is July, with 1.8 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 Arroyo del Medio does not vary significantly over the course of the year, remaining within 0.3 miles per hour of 2.8 miles per hour throughout.

The predominant average hourly wind direction in Arroyo del Medio varies throughout the year.

The wind is most often from the north for 2.1 months, from May 29 to August 2, with a peak percentage of 38% on June 19. The wind is most often from the east for 9.9 months, from August 2 to May 29, with a peak percentage of 40% on January 1.

To characterize how pleasant the weather is in Arroyo del Medio 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 times of year to visit Arroyo del Medio for general outdoor tourist activities are from late February to mid May and from early September to mid December, with a peak score in the second week of April.

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 Arroyo del Medio for hot-weather activities is from mid November to late March, 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).

While it does not do so every year, freezing temperatures are seen in Arroyo del Medio over some winters. The day least likely to be in the growing season is July 11, with a 58% chance.

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 Arroyo del Medio should appear around July 10, only rarely appearing before July 7 or after July 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 significant seasonal variation over the course of the year.

The brighter period of the year lasts for 3.6 months, from October 30 to February 16, with an average daily incident shortwave energy per square meter above 6.5 kWh. The brightest month of the year in Arroyo del Medio is December, with an average of 7.3 kWh.

The darker period of the year lasts for 3.0 months, from May 8 to August 9, with an average daily incident shortwave energy per square meter below 3.9 kWh. The darkest month of the year in Arroyo del Medio is June, with an average of 3.2 kWh.

For the purposes of this report, the geographical coordinates of Arroyo del Medio are -27.700 deg latitude, -55.417 deg longitude, and 942 ft elevation.

The topography within 2 miles of Arroyo del Medio contains significant variations in elevation, with a maximum elevation change of 525 feet and an average elevation above sea level of 663 feet. Within 10 miles contains significant variations in elevation (850 feet). Within 50 miles also contains very significant variations in elevation (1,421 feet).

The area within 2 miles of Arroyo del Medio is covered by trees (76%), within 10 miles by trees (69%) and grassland (12%), and within 50 miles by trees (46%) and shrubs (22%).