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Fall Weather in Guápiles Costa Rica

Daily high temperatures are around 86°F, rarely falling below 82°F or exceeding 90°F. The highest daily average high temperature is 87°F on September 22.

Daily low temperatures are around 73°F, rarely falling below 71°F or exceeding 77°F. The lowest daily average low temperature is 73°F on September 17.

For reference, on April 16, the hottest day of the year, temperatures in Guápiles typically range from 73°F to 89°F, while on March 16, the coldest day of the year, they range from 72°F to 87°F.

Average High and Low Temperature in the Fall in Guápiles

Average High and Low Temperature in the Fall in GuápilesSepOctNov70°F70°F72°F72°F74°F74°F76°F76°F78°F78°F80°F80°F82°F82°F84°F84°F86°F86°F88°F88°F90°F90°F92°F92°F94°F94°FSummerWinterSep 2187°FSep 2187°F73°F73°FSep 187°FSep 187°F73°F73°FNov 3085°FNov 3085°F74°F74°FNov 186°FNov 186°F73°F73°FNowNow
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 hourly average fall temperatures. 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 the Fall in Guápiles

Average Hourly Temperature in the Fall in GuápilesSepOctNov12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMSummerWinterNowNowcomfortablewarmhot
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.

Andili, Philippines (10,064 miles away) is the far-away foreign place with temperatures most similar to Guápiles (view comparison).

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The fall in Guápiles experiences very rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 93% to 62%.

The clearest day of the fall is November 30, with clear, mostly clear, or partly cloudy conditions 38% of the time.

For reference, on June 12, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 95%, while on January 2, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 64%.

Cloud Cover Categories in the Fall in Guápiles

Cloud Cover Categories in the Fall in GuápilesSepOctNov0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SummerWinterSep 17%Sep 17%Nov 3038%Nov 3038%Oct 17%Oct 17%Nov 116%Nov 116%NowNowclearmostly clearmostly cloudyovercastpartly cloudy
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.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Guápiles, the chance of a wet day over the course of the fall is very rapidly decreasing, starting the season at 53% and ending it at 37%.

For reference, the year's highest daily chance of a wet day is 58% on October 6, and its lowest chance is 9% on March 16.

Probability of Precipitation in the Fall in Guápiles

Probability of Precipitation in the Fall in GuápilesSepOctNov0%0%10%10%20%20%30%30%40%40%50%50%60%60%SummerWinterOct 658%Oct 658%Sep 153%Sep 153%Nov 3037%Nov 3037%Nov 151%Nov 151%NowNowrain
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 season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the fall in Guápiles is rapidly decreasing, starting the season at 6.3 inches, when it rarely exceeds 11.1 inches or falls below 1.9 inches, and ending the season at 4.7 inches, when it rarely exceeds 10.5 inches or falls below 0.6 inches.

The highest average 31-day accumulation is 7.2 inches on October 13.

Average Monthly Rainfall in the Fall in Guápiles

Average Monthly Rainfall in the Fall in GuápilesSepOctNov0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in14 in14 inSummerWinterOct 127.2 inOct 127.2 inSep 16.3 inSep 16.3 inNov 304.7 inNov 304.7 inNov 16.6 inNov 16.6 inNowNow
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 snowfall.

Over the course of the fall in Guápiles, the length of the day is decreasing. From the start to the end of the season, the length of the day decreases by 44 minutes, implying an average daily decrease of 29 seconds, and weekly decrease of 3 minutes, 24 seconds.

The shortest day of the fall is November 30, with 11 hours, 34 minutes of daylight and the longest day is September 1, with 12 hours, 18 minutes of daylight.

Hours of Daylight and Twilight in the Fall in Guápiles

Hours of Daylight and Twilight in the Fall in GuápilesSepOctNov0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrSummerWinterSep 2212 hr, 7 minSep 2212 hr, 7 minnightnightdaydayNov 3011 hr, 34 minNov 3011 hr, 34 minNov 111 hr, 45 minNov 111 hr, 45 minNowNow
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 of the fall in Guápiles is 5:23 AM on October 10 and the latest sunrise is 13 minutes later at 5:36 AM on November 30.

The latest sunset is 5:43 PM on September 1 and the earliest sunset is 35 minutes earlier at 5:09 PM on November 16.

Daylight saving time is not observed in Guápiles during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:15 AM and sets 12 hours, 43 minutes later, at 5:58 PM, while on December 21, the shortest day of the year, it rises at 5:47 AM and sets 11 hours, 32 minutes later, at 5:19 PM.

Sunrise & Sunset with Twilight in the Fall in Guápiles

Sunrise & Sunset with Twilight in the Fall in GuápilesSepOctNov12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PMSummerWinter5:23 AM5:23 AMOct 105:20 PMOct 105:20 PM5:25 AM5:25 AMSep 15:43 PMSep 15:43 PM5:30 AM5:30 AMNov 165:09 PMNov 165:09 PMSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day in the fall. 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.

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 the Fall in Guápiles

Solar Elevation and Azimuth in the Fall in GuápilesSepOctNov12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMSummerWinter001020203030405050606070800010102030304040506070NowNow
northeastsouthwest
Solar elevation and azimuth in the the fall of 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for the fall of 2024. 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 the Fall in Guápiles

Moon Rise, Set & Phases in the Fall in GuápilesSepOctNov12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSummerWinterAug 45:14 AMAug 45:14 AMAug 1912:26 PMAug 1912:26 PMSep 27:56 PMSep 27:56 PMSep 178:35 PMSep 178:35 PMOct 212:50 PMOct 212:50 PMOct 175:27 AMOct 175:27 AMNov 16:48 AMNov 16:48 AMNov 153:29 PMNov 153:29 PMDec 112:22 AMDec 112:22 AMDec 153:02 AMDec 153:02 AMDec 304:28 PMDec 304:28 PM6:25 PM6:25 PM6:05 PM6:05 PM6:13 AM6:13 AM5:41 PM5:41 PM5:26 PM5:26 PM5:50 AM5:50 AM5:13 AM5:13 AM5:27 PM5:27 PM4:45 PM4:45 PM5:25 AM5:25 AM5:25 AM5:25 AM5:19 PM5:19 PM5:02 PM5:02 PM6:10 AM6:10 AM5:53 AM5:53 AM4:41 PM4:41 PM5:59 AM5:59 AM5:37 AM5:37 AMNowNow
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

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 Guápiles is very rapidly decreasing during the fall, falling from 88% to 63% over the course of the season.

The highest chance of a muggy day during the fall is 90% on September 28.

For reference, on June 5, the muggiest day of the year, there are muggy conditions 94% of the time, while on January 23, the least muggy day of the year, there are muggy conditions 22% of the time.

Humidity Comfort Levels in the Fall in Guápiles

Humidity Comfort Levels in the Fall in GuápilesSepOctNov0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%SummerWinterSep 2890%Sep 2890%Sep 188%Sep 188%Nov 3063%Nov 3063%Nov 184%Nov 184%NowNowoppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortablemiserablemiserable
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.

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 Guápiles is increasing during the fall, increasing from 2.2 miles per hour to 3.2 miles per hour over the course of the season.

For reference, on January 30, the windiest day of the year, the daily average wind speed is 4.0 miles per hour, while on October 1, the calmest day of the year, the daily average wind speed is 1.9 miles per hour.

The lowest daily average wind speed during the fall is 1.9 miles per hour on October 1.

Average Wind Speed in the Fall in Guápiles

Average Wind Speed in the Fall in GuápilesSepOctNov0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mphSummerWinterOct 11.9 mphOct 11.9 mphSep 12.2 mphSep 12.2 mphNov 303.2 mphNov 303.2 mphNov 12.4 mphNov 12.4 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Guápiles throughout the fall is predominantly from the east, with a peak proportion of 63% on September 1.

Wind Direction in the Fall in Guápiles

Wind Direction in the Fall in GuápilesSepOctNov0%100%20%80%40%60%60%40%80%20%100%0%SummerWinterNowNoweastnorthwestsouth
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).

Guápiles 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 Guápiles is essentially constant during the fall, remaining within 1°F of 83°F throughout.

The highest average surface water temperature during the fall is 84°F on September 23.

Average Water Temperature in the Fall in Guápiles

Average Water Temperature in the Fall in GuápilesSepOctNov79°F79°F80°F80°F81°F81°F82°F82°F83°F83°F84°F84°F85°F85°FSummerWinterSep 2384°FSep 2384°FSep 183°FSep 183°FNov 3082°FNov 3082°FNov 183°FNov 183°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

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).

Temperatures in Guápiles are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Time Spent in Various Temperature Bands and the Growing Season in the Fall in Guápiles

Time Spent in Various Temperature Bands and the Growing Season in the Fall in GuápilesSepOctNov0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SummerWinter100%Oct 16100%Oct 16NowNowcomfortablewarmhot
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.

The average accumulated growing degree days in Guápiles are very rapidly increasing during the fall, increasing by 2,542°F, from 6,948°F to 9,490°F, over the course of the season.

Growing Degree Days in the Fall in Guápiles

Growing Degree Days in the Fall in GuápilesSepOctNov7,000°F7,000°F7,500°F7,500°F8,000°F8,000°F8,500°F8,500°F9,000°F9,000°F9,500°F9,500°FSummerWinterSep 16,948°FSep 16,948°FNov 309,490°FNov 309,490°FOct 17,790°FOct 17,790°FNov 18,662°FNov 18,662°FNowNow
The average growing degree days accumulated over the course of the fall, with 25th to 75th and 10th to 90th percentile bands.

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 Guápiles is gradually increasing during the fall, rising by 0.5 kWh, from 4.1 kWh to 4.6 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the fall is 3.8 kWh on October 10.

Average Daily Incident Shortwave Solar Energy in the Fall in Guápiles

Average Daily Incident Shortwave Solar Energy in the Fall in GuápilesSepOctNov0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWhSummerWinterOct 103.8 kWhOct 103.8 kWhSep 14.1 kWhSep 14.1 kWhNov 304.6 kWhNov 304.6 kWhNov 14.1 kWhNov 14.1 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Guápiles are 10.217 deg latitude, -83.785 deg longitude, and 833 ft elevation.

The topography within 2 miles of Guápiles contains significant variations in elevation, with a maximum elevation change of 584 feet and an average elevation above sea level of 839 feet. Within 10 miles contains significant variations in elevation (5,476 feet). Within 50 miles also contains extreme variations in elevation (11,424 feet).

The area within 2 miles of Guápiles is covered by trees (51%), grassland (22%), and cropland (19%), within 10 miles by trees (69%) and grassland (12%), and within 50 miles by trees (57%) and water (19%).

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

At a distance of 53 kilometers from Guápiles, 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 Guápiles 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 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.

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.

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