Average Weather in September in José Pedro Varela Uruguay
Daily high temperatures increase by 3°F, from 66°F to 69°F, rarely falling below 56°F or exceeding 77°F.
Daily low temperatures increase by 4°F, from 47°F to 50°F, rarely falling below 37°F or exceeding 59°F.
For reference, on January 15, the hottest day of the year, temperatures in José Pedro Varela typically range from 63°F to 86°F, while on July 8, the coldest day of the year, they range from 43°F to 60°F.
Average High and Low Temperature in September
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in September
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 month of September in José Pedro Varela experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 45% throughout the month.
The clearest day of the month is September 30, with clear, mostly clear, or partly cloudy conditions 57% of the time.
For reference, on June 9, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 54%, while on January 8, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 69%.
Cloud Cover Categories in September
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. In José Pedro Varela, the chance of a wet day over the course of September is gradually decreasing, starting the month at 26% and ending it at 24%.
For reference, the year's highest daily chance of a wet day is 34% on February 12, and its lowest chance is 22% on July 31.
Probability of Precipitation in September
To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day rainfall during September in José Pedro Varela is essentially constant, remaining about 3.7 inches throughout, and rarely exceeding 6.9 inches or falling below 1.2 inches.
The highest average 31-day accumulation is 3.8 inches on September 17.
Average Monthly Rainfall in September
Over the course of September in José Pedro Varela, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 59 minutes, implying an average daily increase of 2 minutes, 2 seconds, and weekly increase of 14 minutes, 13 seconds.
The shortest day of the month is September 1, with 11 hours, 26 minutes of daylight and the longest day is September 30, with 12 hours, 24 minutes of daylight.
Hours of Daylight and Twilight in September
The latest sunrise of the month in José Pedro Varela is 6:55 AM on September 1 and the earliest sunrise is 39 minutes earlier at 6:15 AM on September 30.
The earliest sunset is 6:20 PM on September 1 and the latest sunset is 19 minutes later at 6:40 PM on September 30.
Daylight saving time is not observed in José Pedro Varela during 2020.
For reference, on December 21, the longest day of the year, the Sun rises at 5:25 AM and sets 14 hours, 23 minutes later, at 7:47 PM, while on June 20, the shortest day of the year, it rises at 7:41 AM and sets 9 hours, 56 minutes later, at 5:37 PM.
Sunrise & Sunset with Twilight in September
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 chance that a given day will be muggy in José Pedro Varela is essentially constant during September, remaining within 1% of 2% throughout.
For reference, on February 9, the muggiest day of the year, there are muggy conditions 48% of the time, while on July 21, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in September
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 in José Pedro Varela is essentially constant during September, remaining within 0.1 miles per hour of 5.3 miles per hour throughout.
For reference, on September 13, the windiest day of the year, the daily average wind speed is 5.4 miles per hour, while on May 6, the calmest day of the year, the daily average wind speed is 4.4 miles per hour.
The highest daily average wind speed during September is 5.4 miles per hour on September 13.
Average Wind Speed in September
The hourly average wind direction in José Pedro Varela throughout September is predominantly from the east, with a peak proportion of 45% on September 30.
Wind Direction in September
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 José Pedro Varela typically lasts for 11 months (323 days), from around July 27 to around June 15, rarely starting after September 1, or ending before May 25.
The month of September in José Pedro Varela is more likely than not fully outside of the growing season, with the chance that a given day is in the growing season gradually increasing from 90% to 100% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in September
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.
The average accumulated growing degree days in José Pedro Varela are increasing during September, increasing by 230°F, from 323°F to 553°F, over the course of the month.
Growing Degree Days in September
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 in José Pedro Varela is increasing during September, rising by 1.2 kWh, from 4.1 kWh to 5.3 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in September
For the purposes of this report, the geographical coordinates of José Pedro Varela are -33.455 deg latitude, -54.536 deg longitude, and 246 ft elevation.
The topography within 2 miles of José Pedro Varela contains only modest variations in elevation, with a maximum elevation change of 213 feet and an average elevation above sea level of 237 feet. Within 10 miles contains only modest variations in elevation (745 feet). Within 50 miles contains significant variations in elevation (1,250 feet).
The area within 2 miles of José Pedro Varela is covered by grassland (67%) and cropland (10%), within 10 miles by grassland (83%) and cropland (10%), and within 50 miles by grassland (77%) and cropland (11%).
This report illustrates the typical weather in José Pedro Varela year round, 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 are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in José Pedro Varela.
For each station, the records are corrected for the elevation difference between that station and José Pedro Varela according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at José Pedro Varela is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between José Pedro Varela and a given station.
The stations contributing to this reconstruction are: Treinta Y Tres (93%, 30 kilometers, northeast) and Capitán de Corbeta Carlos A. Curbelo International Airport (7%, 164 kilometers, south).
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 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.
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.