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Average Weather in San Martín Colombia

The climate in San Martín is hot, oppressive, and overcast. Over the course of the year, the temperature typically varies from 74°F to 95°F and is rarely below 70°F or above 101°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 San MartínJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMhotwarmcomfortable
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < chilly < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

Clouds

In San Martín, 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 San Martín begins around December 9 and lasts for 3.3 months, ending around March 18. On January 13, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 32% of the time, and overcast or mostly cloudy 68% of the time.

The cloudier part of the year begins around March 18 and lasts for 8.7 months, ending around December 9. On May 6, the cloudiest day of the year, the sky is overcast or mostly cloudy 94% of the time, and clear, mostly clear, or partly cloudy 6% of the time.

Cloud Cover Categories

Cloud Cover Categories in San MartínclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jan 1332%Jan 1332%May 66%May 66%Dec 919%Dec 919%Mar 1819%Mar 1819%partly cloudyovercastclearmostly cloudymostly clear
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

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

The wetter season lasts 8.2 months, from March 30 to December 4, with a greater than 35% chance of a given day being a wet day. The chance of a wet day peaks at 57% on October 5.

The drier season lasts 3.8 months, from December 4 to March 30. The smallest chance of a wet day is 13% on January 20.

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 57% on October 5.

Daily Chance of Precipitation

Daily Chance of Precipitation in San MartínwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Oct 557%Oct 557%Jan 2013%Jan 2013%Jan 117%Jan 117%Mar 3035%Mar 3035%Dec 435%Dec 435%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. San Martín experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in San Martín. The most rain falls during the 31 days centered around October 12, with an average total accumulation of 5.4 inches.

The least rain falls around January 13, with an average total accumulation of 1.0 inches.

Average Monthly Rainfall

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 San Martín does not vary substantially over the course of the year, staying within 35 minutes of 12 hours throughout. In 2017, the shortest day is December 21, with 11 hours, 40 minutes of daylight; the longest day is June 20, with 12 hours, 35 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in San MartínJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minMar 2012 hr, 6 minMar 2012 hr, 35 minJun 2012 hr, 35 minJun 2012 hr, 7 minSep 2212 hr, 7 minSep 2211 hr, 40 minDec 2111 hr, 40 minDec 21nightnightday
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 5:34 AM on May 26, and the latest sunrise is 39 minutes later at 6:14 AM on January 30. The earliest sunset is at 5:31 PM on November 14, and the latest sunset is 45 minutes later at 6:16 PM on July 13.

Daylight saving time (DST) is not observed in San Martín during 2017.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in San MartínJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMMay 265:34 AMMay 265:34 AM6:16 PMJul 136:16 PMJul 13Nov 145:31 PMNov 145:31 PM6:14 AMJan 306:14 AMJan 30daynightnightnightnight
The solar day over the course of the year 2017. 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.

San Martín experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 10 months, from August 17 to June 26, during which time the comfort level is muggy, oppressive, or miserable at least 87% of the time. The muggiest day of the year is November 6, with muggy conditions 98% of the time.

The least muggy day of the year is July 27, with muggy conditions 83% of the time.

Humidity Comfort Levels

Humidity Comfort Levels in San MartínmuggymuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 2783%Jul 2783%98%Nov 698%Nov 6Jun 2687%Jun 2687%humidhumidmuggymuggymiserablemiserableoppressiveoppressive
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

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 San Martín does not vary significantly over the course of the year, remaining within 0.5 miles per hour of 1.5 miles per hour throughout.

Average Wind Speed

Average Wind Speed in San MartínJanFebMarAprMayJunJulAugSepOctNovDec0.0 mph0.5 mph1.0 mph1.5 mph2.0 mph2.5 mph3.0 mphFeb 72.0 mphFeb 72.0 mphSep 261.0 mphSep 261.0 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 San Martín varies throughout the year.

The wind is most often from the north for 1.9 weeks, from October 19 to November 1, with a peak percentage of 41% on October 31. The wind is most often from the east for 12 months, from November 1 to October 19, with a peak percentage of 77% on January 1.

Wind Direction

Wind Direction in San MartínENEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%eastnorthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

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 some seasonal variation over the course of the year.

The brighter period of the year lasts for 2.5 months, from January 8 to March 24, with an average daily incident shortwave energy per square meter above 5.5 kWh. The brightest day of the year is February 26, with an average of 5.9 kWh.

The darker period of the year lasts for 2.4 months, from September 22 to December 2, with an average daily incident shortwave energy per square meter below 4.6 kWh. The darkest day of the year is October 20, with an average of 4.2 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in San MartínbrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWhFeb 265.9 kWhFeb 265.9 kWhOct 204.2 kWhOct 204.2 kWhJan 85.5 kWhJan 85.5 kWhDec 24.5 kWhDec 24.5 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 San Martín are 8.002 deg latitude, -73.511 deg longitude, and 335 ft elevation.

The topography within 2 miles of San Martín contains only modest variations in elevation, with a maximum elevation change of 180 feet and an average elevation above sea level of 337 feet. Within 10 miles contains only modest variations in elevation (4,318 feet). Within 50 miles also contains extreme variations in elevation (13,068 feet).

The area within 2 miles of San Martín is covered by trees (49%), grassland (20%), cropland (16%), and shrubs (14%), within 10 miles by trees (43%) and grassland (24%), and within 50 miles by trees (56%) and grassland (21%).

Data Sources

This report illustrates the typical weather in San Martín, 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, Juan Vicente Gómez International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of San Martín.

At a distance of 119 kilometers from San Martín, 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 San Martín 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.