Average Weather in March in Chillán Chile
Daily high temperatures decrease by 7°F, from 84°F to 77°F, rarely falling below 69°F or exceeding 91°F.
Daily low temperatures decrease by 4°F, from 52°F to 48°F, rarely falling below 40°F or exceeding 59°F.
For reference, on January 23, the hottest day of the year, temperatures in Chillán typically range from 53°F to 87°F, while on July 25, the coldest day of the year, they range from 39°F to 58°F.
Average High and Low Temperature in March
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on March. 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 March
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 March in Chillán experiences rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 15% to 29%.
The clearest day of the month is March 1, with clear, mostly clear, or partly cloudy conditions 85% of the time.
For reference, on June 5, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 64%, while on January 20, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 89%.
Cloud Cover Categories in March
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 Chillán, the chance of a wet day over the course of March is increasing, starting the month at 8% and ending it at 13%.
For reference, the year's highest daily chance of a wet day is 41% on June 22, and its lowest chance is 5% on January 15.
Probability of Precipitation in March
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 March in Chillán is increasing, starting the month at 0.8 inches, when it rarely exceeds 2.1 inches, and ending the month at 1.4 inches, when it rarely exceeds 3.4 inches or falls below 0.1 inches.
Average Monthly Rainfall in March
Over the course of March in Chillán, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 10 minutes, implying an average daily decrease of 2 minutes, 21 seconds, and weekly decrease of 16 minutes, 24 seconds.
The shortest day of the month is March 31, with 11 hours, 41 minutes of daylight and the longest day is March 1, with 12 hours, 52 minutes of daylight.
Hours of Daylight and Twilight in March
The earliest sunrise of the month in Chillán is 7:34 AM on March 1 and the latest sunrise is 27 minutes later at 8:01 AM on March 31.
The latest sunset is 8:26 PM on March 1 and the earliest sunset is 43 minutes earlier at 7:42 PM on March 31.
Daylight saving time is observed in Chillán during 2020, but it neither starts nor ends during March, so the entire month is in daylight saving time.
For reference, on December 21, the longest day of the year, the Sun rises at 6:26 AM and sets 14 hours, 40 minutes later, at 9:06 PM, while on June 20, the shortest day of the year, it rises at 8:00 AM and sets 9 hours, 39 minutes later, at 5:39 PM.
Sunrise & Sunset with Twilight in March
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 Chillán is essentially constant during March, remaining around 0% throughout.
For reference, on February 18, the muggiest day of the year, there are muggy conditions 0% of the time, while on April 8, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in March
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 Chillán is essentially constant during March, remaining within 0.2 miles per hour of 5.1 miles per hour throughout.
For reference, on January 18, the windiest day of the year, the daily average wind speed is 5.9 miles per hour, while on October 5, the calmest day of the year, the daily average wind speed is 4.7 miles per hour.
Average Wind Speed in March
The hourly average wind direction in Chillán throughout March is predominantly from the south, with a peak proportion of 52% on March 14.
Wind Direction in March
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 Chillán typically lasts for 7.7 months (234 days), from around September 21 to around May 13, rarely starting before August 26 or after November 8, and rarely ending before April 13 or after June 11.
The month of March in Chillán is reliably fully within the growing season.
Time Spent in Various Temperature Bands and the Growing Season in March
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 Chillán are increasing during March, increasing by 419°F, from 2,461°F to 2,880°F, over the course of the month.
Growing Degree Days in March
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 Chillán is rapidly decreasing during March, falling by 2.0 kWh, from 7.0 kWh to 5.1 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in March
For the purposes of this report, the geographical coordinates of Chillán are -36.607 deg latitude, -72.103 deg longitude, and 410 ft elevation.
The topography within 2 miles of Chillán contains only modest variations in elevation, with a maximum elevation change of 157 feet and an average elevation above sea level of 411 feet. Within 10 miles contains only modest variations in elevation (620 feet). Within 50 miles contains significant variations in elevation (10,459 feet).
The area within 2 miles of Chillán is covered by shrubs (56%), trees (17%), and grassland (16%), within 10 miles by cropland (32%) and trees (30%), and within 50 miles by trees (47%) and shrubs (18%).
This report illustrates the typical weather in Chillán 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 is only a single weather station, Carriel Sur International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Chillán.
At a distance of 88 kilometers from Chillán, 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 Chillán 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.
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.