Climate and Average Weather Year Round in Veinticinco de Mayo Argentina

In Veinticinco de Mayo, the summers are hot and mostly clear, the winters are cold and partly cloudy, and it is dry and windy year round. Over the course of the year, the temperature typically varies from 34°F to 89°F and is rarely below 25°F or above 98°F.

Based on the tourism score, the best time of year to visit Veinticinco de Mayo for warm-weather activities is from early November to mid March.

The hot season lasts for 3.6 months, from November 22 to March 10, with an average daily high temperature above 83°F. The hottest month of the year in Veinticinco de Mayo is January, with an average high of 89°F and low of 63°F.

The cool season lasts for 3.2 months, from May 15 to August 21, with an average daily high temperature below 63°F. The coldest month of the year in Veinticinco de Mayo is July, with an average low of 35°F and high of 57°F.

In Veinticinco de Mayo, 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 Veinticinco de Mayo begins around October 15 and lasts for 5.9 months, ending around April 13.

The clearest month of the year in Veinticinco de Mayo is January, during which on average the sky is clear, mostly clear, or partly cloudy 83% of the time.

The cloudier part of the year begins around April 13 and lasts for 6.1 months, ending around October 15.

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

Veinticinco de Mayo does not experience significant seasonal variation in the frequency of wet days (i.e., those with greater than 0.04 inches of liquid or liquid-equivalent precipitation). The frequency ranges from 6% to 12%, with an average value of 9%.

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 Veinticinco de Mayo is April, with an average of 3.0 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 12% on April 3.

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. Veinticinco de Mayo experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 9.9 months, from September 5 to July 1, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Veinticinco de Mayo is March, with an average rainfall of 0.9 inches.

The rainless period of the year lasts for 2.1 months, from July 1 to September 5. The month with the least rain in Veinticinco de Mayo is July, with an average rainfall of 0.4 inches.

The length of the day in Veinticinco de Mayo varies significantly over the course of the year. In 2024, the shortest day is June 20, with 9 hours, 33 minutes of daylight; the longest day is December 21, with 14 hours, 47 minutes of daylight.

The earliest sunrise is at 6:02 AM on December 7, and the latest sunrise is 2 hours, 45 minutes later at 8:47 AM on June 28. The earliest sunset is at 6:18 PM on June 13, and the latest sunset is 2 hours, 38 minutes later at 8:56 PM on January 5.

Daylight saving time (DST) is not observed in Veinticinco de Mayo 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.

The perceived humidity level in Veinticinco de Mayo, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 2% of 2% throughout.

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 Veinticinco de Mayo experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.4 months, from September 14 to February 25, with average wind speeds of more than 10.7 miles per hour. The windiest month of the year in Veinticinco de Mayo is December, with an average hourly wind speed of 12.3 miles per hour.

The calmer time of year lasts for 6.7 months, from February 25 to September 14. The calmest month of the year in Veinticinco de Mayo is May, with an average hourly wind speed of 9.0 miles per hour.

The predominant average hourly wind direction in Veinticinco de Mayo varies throughout the year.

The wind is most often from the west for 4.9 months, from April 13 to September 9, with a peak percentage of 45% on June 17. The wind is most often from the south for 7.1 months, from September 9 to April 13, with a peak percentage of 47% on January 1.

To characterize how pleasant the weather is in Veinticinco de Mayo 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 Veinticinco de Mayo for general outdoor tourist activities is from early November to mid March, with a peak score in the first week of December.

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 Veinticinco de Mayo for hot-weather activities is from mid December to mid 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 Veinticinco de Mayo typically lasts for 8.0 months (244 days), from around September 4 to around May 6, rarely starting before August 15 or after September 28, and rarely ending before April 15 or after May 28.

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 Veinticinco de Mayo should appear around August 11, only rarely appearing before August 3 or after August 21.

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 3.4 months, from November 3 to February 14, with an average daily incident shortwave energy per square meter above 7.5 kWh. The brightest month of the year in Veinticinco de Mayo is December, with an average of 8.8 kWh.

The darker period of the year lasts for 3.7 months, from April 27 to August 17, with an average daily incident shortwave energy per square meter below 3.5 kWh. The darkest month of the year in Veinticinco de Mayo is June, with an average of 2.2 kWh.

For the purposes of this report, the geographical coordinates of Veinticinco de Mayo are -37.774 deg latitude, -67.716 deg longitude, and 1,142 ft elevation.

The topography within 2 miles of Veinticinco de Mayo contains only modest variations in elevation, with a maximum elevation change of 112 feet and an average elevation above sea level of 1,148 feet. Within 10 miles also contains only modest variations in elevation (476 feet). Within 50 miles contains only modest variations in elevation (2,185 feet).

The area within 2 miles of Veinticinco de Mayo is covered by shrubs (31%), trees (29%), and grassland (28%), within 10 miles by trees (28%) and sparse vegetation (28%), and within 50 miles by trees (31%) and grassland (29%).