January Weather in Santiago Chile
Daily high temperatures are around 86°F, rarely falling below 80°F or exceeding 91°F. The highest daily average high temperature is 86°F on January 17.
Daily low temperatures are around 57°F, rarely falling below 52°F or exceeding 61°F. The highest daily average low temperature is 57°F on January 14.
For reference, on January 16, the hottest day of the year, temperatures in Santiago typically range from 57°F to 86°F, while on July 25, the coldest day of the year, they range from 38°F to 60°F.
Average High and Low Temperature in January in Santiago
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on January. 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 January in Santiago
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 January in Santiago experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 10% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 9% on January 31.
The clearest day of the month is January 31, with clear, mostly clear, or partly cloudy conditions 91% of the time.
For reference, on June 1, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 53%, while on January 31, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 91%.
Cloud Cover Categories in January in Santiago
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 Santiago, the chance of a wet day over the course of January is essentially constant, remaining around 4% throughout.
For reference, the year's highest daily chance of a wet day is 20% on June 27, and its lowest chance is 2% on December 2.
Probability of Precipitation in January in Santiago
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 January in Santiago is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.5 inches.
Average Monthly Rainfall in January in Santiago
Over the course of January in Santiago, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 36 minutes, implying an average daily decrease of 1 minute, 12 seconds, and weekly decrease of 8 minutes, 21 seconds.
The shortest day of the month is January 31, with 13 hours, 44 minutes of daylight and the longest day is January 1, with 14 hours, 20 minutes of daylight.
Hours of Daylight and Twilight in January in Santiago
The earliest sunrise of the month in Santiago is 6:36 AM on January 1 and the latest sunrise is 28 minutes later at 7:03 AM on January 31.
The latest sunset is 8:56 PM on January 7 and the earliest sunset is 9 minutes earlier at 8:47 PM on January 31.
Daylight saving time is observed in Santiago during 2023, but it neither starts nor ends during January, so the entire month is in daylight saving time.
For reference, on December 22, the longest day of the year, the Sun rises at 6:29 AM and sets 14 hours, 23 minutes later, at 8:52 PM, while on June 21, the shortest day of the year, it rises at 7:46 AM and sets 9 hours, 56 minutes later, at 5:42 PM.
Sunrise & Sunset with Twilight in January in Santiago
The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.
Solar Elevation and Azimuth in January in Santiago
The figure below presents a compact representation of key lunar data for January 2023. 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. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.
Moon Rise, Set & Phases in January in Santiago
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 Santiago is essentially constant during January, remaining around 0% throughout.
For reference, on January 1, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 9, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in January in Santiago
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 Santiago is essentially constant during January, remaining within 0.1 miles per hour of 7.0 miles per hour throughout.
For reference, on January 4, the windiest day of the year, the daily average wind speed is 7.1 miles per hour, while on May 9, the calmest day of the year, the daily average wind speed is 5.5 miles per hour.
The highest daily average wind speed during January is 7.1 miles per hour on January 5.
Average Wind Speed in January in Santiago
The hourly average wind direction in Santiago throughout January is predominantly from the west, with a peak proportion of 47% on January 1.
Wind Direction in January in Santiago
Santiago 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 surface water temperature in Santiago is essentially constant during January, remaining within 1°F of 61°F throughout.
Average Water Temperature in January in Santiago
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 Santiago typically lasts for 8.9 months (271 days), from around August 31 to around May 28, rarely starting before August 1 or after September 26, and rarely ending before May 5 or after June 25.
The month of January in Santiago is reliably fully within the growing season.
Time Spent in Various Temperature Bands and the Growing Season in January in Santiago
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 Santiago are rapidly increasing during January, increasing by 633°F, from 1,774°F to 2,407°F, over the course of the month.
Growing Degree Days in January in Santiago
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 Santiago is gradually decreasing during January, falling by 0.6 kWh, from 9.4 kWh to 8.9 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in January in Santiago
For the purposes of this report, the geographical coordinates of Santiago are -33.457 deg latitude, -70.648 deg longitude, and 1,824 ft elevation.
The topography within 2 miles of Santiago contains only modest variations in elevation, with a maximum elevation change of 285 feet and an average elevation above sea level of 1,818 feet. Within 10 miles contains only modest variations in elevation (6,207 feet). Within 50 miles also contains extreme variations in elevation (19,902 feet).
The area within 2 miles of Santiago is covered by artificial surfaces (71%), trees (13%), and grassland (11%), within 10 miles by artificial surfaces (34%) and shrubs (28%), and within 50 miles by shrubs (37%) and trees (20%).
This report illustrates the typical weather in Santiago, 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 Santiago.
For each station, the records are corrected for the elevation difference between that station and Santiago 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 Santiago is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Santiago and a given station.
The stations contributing to this reconstruction are:
To get a sense of how much these sources agree with each other, you can view a comparison of Santiago and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.
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 airports and weather stations are provided by AskGeo.com .
Maps are © OpenStreetMap contributors.
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.
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