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Average Weather in Río Grande Argentina

In Río Grande, the summers are cool, extremely windy, and mostly cloudy and the winters are very cold, dry, windy, and partly cloudy. Over the course of the year, the temperature typically varies from 34°F to 57°F and is rarely below 28°F or above 64°F.

Based on the tourism score, the best time of year to visit Río Grande for warm-weather activities is from early January to late February.

Climate Summary

coolcoldvery coldcoldJanFebMarAprMayJunJulAugSepOctNovDec48%48%40%40%overcastclearprecipitation: 1.6 inprecipitation: 1.6 in0.7 in0.7 inmuggy: 0%muggy: 0%drydrytourism score: 2.2tourism score: 2.20.00.0
Click on each chart for more information.

Temperature

The warm season lasts for 3.5 months, from December 6 to March 21, with an average daily high temperature above 54°F. The hottest day of the year is January 31, with an average high of 57°F and low of 46°F.

The cool season lasts for 3.3 months, from May 25 to September 2, with an average daily high temperature below 45°F. The coldest day of the year is July 6, with an average low of 34°F and high of 41°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature in Río GrandeJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMvery coldcoldcold
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
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Ullapool, United Kingdom (8,480 miles away) is the far-away foreign place with temperatures most similar to Río Grande (view comparison).

Clouds

On February 27, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 48% of the time, and overcast or mostly cloudy 52% of the time.

On May 21, the cloudiest day of the year, the sky is overcast or mostly cloudy 60% of the time, and clear, mostly clear, or partly cloudy 40% of the time.

Cloud Cover Categories

Cloud Cover Categories in Río GrandeJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Feb 2748%Feb 2748%May 2140%May 2140%clearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

Precipitation

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

The wetter season lasts 8.6 months, from November 14 to August 1, with a greater than 22% chance of a given day being a wet day. The chance of a wet day peaks at 30% on March 12.

The drier season lasts 3.4 months, from August 1 to November 14. The smallest chance of a wet day is 14% on October 1.

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 30% on March 12.

Daily Chance of Precipitation

Daily Chance of Precipitation in Río GrandewetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Mar 1230%Mar 1230%Oct 114%Oct 114%Jan 126%Jan 126%Nov 1422%Nov 1422%Aug 122%Aug 122%rain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

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. Río Grande experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in Río Grande. The most rain falls during the 31 days centered around March 21, with an average total accumulation of 1.6 inches.

The least rain falls around October 5, with an average total accumulation of 0.7 inches.

Average Monthly Rainfall

Average Monthly Rainfall in Río GrandeJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.5 in1.0 in1.5 in2.0 in2.5 in3.0 inMar 211.6 inMar 211.6 inOct 50.7 inOct 50.7 inJul 251.0 inJul 251.0 in
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

The length of the day in Río Grande varies extremely over the course of the year. In 2019, the shortest day is June 21, with 7 hours, 25 minutes of daylight; the longest day is December 22, with 17 hours, 6 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in Río GrandeJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minSep 2312 hr, 8 minSep 2317 hr, 6 minDec 2217 hr, 6 minDec 2212 hr, 12 minMar 2012 hr, 12 minMar 207 hr, 25 minJun 217 hr, 25 minJun 21daydaynight
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 4:54 AM on December 14, and the latest sunrise is 4 hours, 56 minutes later at 9:50 AM on June 25. The earliest sunset is at 5:14 PM on June 17, and the latest sunset is 4 hours, 49 minutes later at 10:03 PM on December 29.

Daylight saving time (DST) is not observed in Río Grande during 2019.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in Río GrandeJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMDec 144:54 AMDec 144:54 AM10:03 PMDec 2910:03 PMDec 29Jun 175:14 PMJun 175:14 PM9:50 AMJun 259:50 AMJun 25daynightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2019. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Humidity

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 Río Grande, 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, remaining a virtually constant 0% throughout.

Humidity Comfort Levels

Humidity Comfort Levels in Río GrandeJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 30%Jul 30%drydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

Wind

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 Río Grande experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 6.0 months, from October 6 to April 7, with average wind speeds of more than 15.8 miles per hour. The windiest day of the year is November 4, with an average hourly wind speed of 17.1 miles per hour.

The calmer time of year lasts for 6.0 months, from April 7 to October 6. The calmest day of the year is May 24, with an average hourly wind speed of 14.5 miles per hour.

Average Wind Speed

Average Wind Speed in Río GrandewindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph5 mph10 mph15 mph20 mph25 mphNov 417.1 mphNov 417.1 mphMay 2414.5 mphMay 2414.5 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Río Grande is from the west throughout the year.

Wind Direction

Wind Direction in Río GrandeJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%westnorthsoutheast
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Water Temperature

Río Grande is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.4 months, from December 30 to April 12, with an average temperature above 48°F. The day of the year with the warmest water is February 18, with an average temperature of 51°F.

The time of year with cooler water lasts for 3.5 months, from July 3 to October 20, with an average temperature below 42°F. The day of the year with the coolest water is August 30, with an average temperature of 39°F.

Average Water Temperature

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Best Time of Year to Visit

To characterize how pleasant the weather is in Río Grande 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 Río Grande for general outdoor tourist activities is from early January to late February, with a peak score in the first week of February.

Tourism Score

Tourism Score in Río Grandebest timeJanFebMarAprMayJunJulAugSepOctNovDec02468102.22.20.00.0 precipitationprecipitationcloudscloudstemperaturetemperaturetourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

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 Río Grande for hot-weather activities is from late January to early February.

Beach/Pool Score

Beach/Pool Score in Río GrandeJanFebMarAprMayJunJulAugSepOctNovDec02468100.00.00.00.0precipitationprecipitationcloudscloudstemperaturetemperature
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

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.

Growing Season

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 Río Grande typically lasts for 6.7 months (203 days), from around October 19 to around May 8, rarely starting before September 18 or after November 13, and rarely ending before March 18 or after June 10.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Río GrandeJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Oct 1950%Oct 1950%May 850%May 890%Nov 1390%Nov 1390%Mar 1890%Mar 1810%Sep 1810%Sep 1810%Jun 1010%Jun 100%Aug 40%Aug 4Jan 7100%Jan 7100%very coldcoldcool
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
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

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.

Growing Degree Days

Growing Degree Days in Río GrandeJanFebMarAprMayJunJulAugSepOctNovDec0°F50°F100°F150°F200°F250°F300°F350°FDec 3090°FDec 3090°FJun 30310°FJun 30310°F
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 3.1 months, from November 5 to February 10, with an average daily incident shortwave energy per square meter above 5.1 kWh. The brightest day of the year is December 21, with an average of 6.2 kWh.

The darker period of the year lasts for 4.1 months, from April 20 to August 24, with an average daily incident shortwave energy per square meter below 1.7 kWh. The darkest day of the year is June 23, with an average of 0.5 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in Río GrandebrightbrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhDec 216.2 kWhDec 216.2 kWhJun 230.5 kWhJun 230.5 kWhFeb 105.1 kWhFeb 105.1 kWhApr 201.7 kWhApr 201.7 kWhAug 241.7 kWhAug 241.7 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Río Grande are -53.788 deg latitude, -67.709 deg longitude, and 20 ft elevation.

The topography within 2 miles of Río Grande is essentially flat, with a maximum elevation change of 72 feet and an average elevation above sea level of 21 feet. Within 10 miles is essentially flat (338 feet). Within 50 miles contains only modest variations in elevation (2,989 feet).

The area within 2 miles of Río Grande is covered by water (50%), sparse vegetation (18%), and shrubs (17%), within 10 miles by water (58%) and shrubs (24%), and within 50 miles by water (62%) and trees (18%).

Data Sources

This report illustrates the typical weather in Río Grande, 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

There is only a single weather station, Ushuaia Aerodrome, in our network suitable to be used as a proxy for the historical temperature and dew point records of Río Grande.

At a distance of 123 kilometers from Río Grande, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.

The station records are corrected for the elevation difference between the station and Río Grande according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , 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 aiports 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.

Disclaimer

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.