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Summer Weather in Oranjestad Aruba

Daily high temperatures are around 90°F, rarely falling below 87°F or exceeding 93°F.

Daily low temperatures are around 81°F, rarely falling below 78°F or exceeding 83°F.

For reference, on September 1, the hottest day of the year, temperatures in Oranjestad typically range from 81°F to 90°F, while on January 20, the coldest day of the year, they range from 77°F to 85°F.

Average High and Low Temperature in the Summer in Oranjestad

Average High and Low Temperature in the Summer in OranjestadJunJulAug80°F80°F85°F85°F90°F90°F95°F95°F100°F100°F105°F105°FSpringFallJun 189°FJun 189°F80°F80°FAug 3190°FAug 3190°F81°F81°FJul 189°FJul 189°F80°F80°FAug 190°FAug 190°F81°F81°F
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 summer 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 Summer in Oranjestad

Average Hourly Temperature in the Summer in OranjestadJunJulAug12 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 AMSpringFallwarmwarmhot
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.

Singapore (11,407 miles away) and Cortes, Philippines (10,575 miles) are the far-away foreign places with temperatures most similar to Oranjestad (view comparison).

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The summer in Oranjestad experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 72% throughout the season. The lowest chance of overcast or mostly cloudy conditions is 68% on July 17.

The clearest day of the summer is July 17, with clear, mostly clear, or partly cloudy conditions 32% of the time.

For reference, on October 7, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 82%, while on January 14, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 54%.

Cloud Cover Categories in the Summer in Oranjestad

Cloud Cover Categories in the Summer in OranjestadJunJulAug0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SpringFallOct 718%Oct 718%Jun 123%Jun 123%Aug 3124%Aug 3124%Jul 129%Jul 129%Aug 131%Aug 131%mostly clearpartly cloudymostly cloudyovercastclear
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 Oranjestad, the chance of a wet day over the course of the summer is increasing, starting the season at 4% and ending it at 9%.

For reference, the year's highest daily chance of a wet day is 20% on November 24, and its lowest chance is 2% on March 21.

Probability of Precipitation in the Summer in Oranjestad

Probability of Precipitation in the Summer in OranjestadJunJulAug0%0%2%2%4%4%6%6%8%8%10%10%12%12%14%14%SpringFallJun 14%Jun 14%Aug 319%Aug 319%Jul 16%Jul 16%Aug 14%Aug 14%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 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 summer in Oranjestad is gradually increasing, starting the season at 0.2 inches, when it rarely exceeds 0.7 inches, and ending the season at 0.6 inches, when it rarely exceeds 1.9 inches.

The lowest average 31-day accumulation is 0.2 inches on July 24.

Average Monthly Rainfall in the Summer in Oranjestad

Average Monthly Rainfall in the Summer in OranjestadJunJulAug0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 in3.0 in3.0 inSpringFallJul 240.2 inJul 240.2 inJun 10.2 inJun 10.2 inAug 310.6 inAug 310.6 inJul 10.3 inJul 10.3 in
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 summer in Oranjestad, the length of the day is gradually decreasing. From the start to the end of the season, the length of the day decreases by 28 minutes, implying an average daily decrease of 18 seconds, and weekly decrease of 2 minutes, 7 seconds.

The shortest day of the summer is August 31, with 12 hours, 22 minutes of daylight and the longest day is June 21, with 12 hours, 52 minutes of daylight.

Hours of Daylight and Twilight in the Summer in Oranjestad

Hours of Daylight and Twilight in the Summer in OranjestadJunJulAug0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrSpringFallJun 2012 hr, 52 minJun 2012 hr, 52 minnightnightdaydayAug 3112 hr, 22 minAug 3112 hr, 22 minAug 112 hr, 40 minAug 112 hr, 40 min
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 summer in Oranjestad is 6:13 AM on June 1 and the latest sunrise is 16 minutes later at 6:29 AM on August 31.

The latest sunset is 7:10 PM on July 10 and the earliest sunset is 19 minutes earlier at 6:50 PM on August 31.

Daylight saving time is not observed in Oranjestad during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 6:15 AM and sets 12 hours, 52 minutes later, at 7:07 PM, while on December 21, the shortest day of the year, it rises at 6:56 AM and sets 11 hours, 23 minutes later, at 6:20 PM.

Sunrise & Sunset with Twilight in the Summer in Oranjestad

Sunrise & Sunset with Twilight in the Summer in OranjestadJunJulAug2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMSpringFall6:13 AM6:13 AMJun 17:02 PMJun 17:02 PM6:21 AM6:21 AMJul 107:10 PMJul 107:10 PM6:29 AM6:29 AMAug 316:50 PMAug 316:50 PM6:26 AM6:26 AMAug 17:06 PMAug 17:06 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day in the summer. 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 Summer in Oranjestad

Solar Elevation and Azimuth in the Summer in OranjestadJunJulAug12 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 AMSpringFall001020203030405050606070800010102030304040506060707080
northeastsouthwest
Solar elevation and azimuth in the the summer 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 summer 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 Summer in Oranjestad

Moon Rise, Set & Phases in the Summer in OranjestadJunJulAug12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSpringFallMay 711:23 PMMay 711:23 PMMay 239:54 AMMay 239:54 AMJun 68:38 AMJun 68:38 AMJun 219:09 PMJun 219:09 PMJul 56:58 PMJul 56:58 PMJul 216:18 AMJul 216:18 AMAug 47:14 AMAug 47:14 AMAug 192:26 PMAug 192:26 PMSep 29:56 PMSep 29:56 PMSep 1710:35 PMSep 1710:35 PM5:39 AM5:39 AM6:40 PM6:40 PM6:22 PM6:22 PM6:02 AM6:02 AM6:04 AM6:04 AM7:29 PM7:29 PM7:04 PM7:04 PM6:37 AM6:37 AM7:14 PM7:14 PM6:48 PM6:48 PM6:27 AM6:27 AM6:30 AM6:30 AM7:31 PM7:31 PM7:11 PM7:11 PM7:14 AM7:14 AM6:46 PM6:46 PM6:30 PM6:30 PM6:52 AM6:52 AM
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 Oranjestad is essentially constant during the summer, remaining around 100% throughout.

For reference, on January 2, the muggiest day of the year, there are muggy conditions 100% of the time, while on March 7, the least muggy day of the year, there are muggy conditions 100% of the time.

Humidity Comfort Levels in the Summer in Oranjestad

Humidity Comfort Levels in the Summer in OranjestadJunJulAug0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%SpringFallJun 1100%Jun 1100%Aug 31100%Aug 31100%Jul 1100%Jul 1100%Aug 1100%Aug 1100%miserablemiserableoppressiveoppressive
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 Oranjestad is rapidly decreasing during the summer, decreasing from 20.6 miles per hour to 18.0 miles per hour over the course of the season.

For reference, on June 15, the windiest day of the year, the daily average wind speed is 21.5 miles per hour, while on October 20, the calmest day of the year, the daily average wind speed is 15.3 miles per hour.

The highest daily average wind speed during the summer is 21.5 miles per hour on June 17.

Average Wind Speed in the Summer in Oranjestad

Average Wind Speed in the Summer in OranjestadJunJulAug0 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mph20 mph20 mphSpringFallJun 1721.5 mphJun 1721.5 mphAug 3118.0 mphAug 3118.0 mphAug 119.9 mphAug 119.9 mph
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 Oranjestad throughout the summer is predominantly from the east, with a peak proportion of 100% on June 13.

Wind Direction in the Summer in Oranjestad

Wind Direction in the Summer in OranjestadJunJulAug0%100%20%80%40%60%60%40%80%20%100%0%SpringFalleast
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).

Oranjestad 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 Oranjestad is essentially constant during the summer, remaining within 1°F of 82°F throughout.

Average Water Temperature in the Summer in Oranjestad

Average Water Temperature in the Summer in OranjestadJunJulAug78°F78°F79°F79°F80°F80°F81°F81°F82°F82°F83°F83°F84°F84°F85°F85°FSpringFallJun 181°FJun 181°FAug 3183°FAug 3183°FJul 181°FJul 181°FAug 182°FAug 182°F
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 Oranjestad 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 Summer in Oranjestad

Time Spent in Various Temperature Bands and the Growing Season in the Summer in OranjestadJunJulAug0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SpringFall100%Jul 17100%Jul 17warmhot
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 Oranjestad are very rapidly increasing during the summer, increasing by 3,042°F, from 4,756°F to 7,798°F, over the course of the season.

Growing Degree Days in the Summer in Oranjestad

Growing Degree Days in the Summer in OranjestadJunJulAug5,000°F5,000°F5,500°F5,500°F6,000°F6,000°F6,500°F6,500°F7,000°F7,000°F7,500°F7,500°FSpringFallJun 14,756°FJun 14,756°FAug 317,798°FAug 317,798°FJul 15,756°FJul 15,756°FAug 16,786°FAug 16,786°F
The average growing degree days accumulated over the course of the summer, 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 Oranjestad is gradually decreasing during the summer, falling by 0.6 kWh, from 5.5 kWh to 4.8 kWh, over the course of the season.

Average Daily Incident Shortwave Solar Energy in the Summer in Oranjestad

Average Daily Incident Shortwave Solar Energy in the Summer in OranjestadJunJulAug0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhSpringFallJun 15.5 kWhJun 15.5 kWhAug 314.8 kWhAug 314.8 kWhJul 15.3 kWhJul 15.3 kWhAug 15.2 kWhAug 15.2 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.

For the purposes of this report, the geographical coordinates of Oranjestad are 12.524 deg latitude, -70.027 deg longitude, and 72 ft elevation.

The topography within 2 miles of Oranjestad contains only modest variations in elevation, with a maximum elevation change of 194 feet and an average elevation above sea level of 49 feet. Within 10 miles contains only modest variations in elevation (659 feet). Within 50 miles contains significant variations in elevation (2,575 feet).

The area within 2 miles of Oranjestad is covered by artificial surfaces (51%), water (28%), and grassland (11%), within 10 miles by water (84%), and within 50 miles by water (92%).

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

At a distance of 3 kilometers from Oranjestad, 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 Oranjestad 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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