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December Weather in Aruba Aruba

Daily high temperatures are around 86°F, rarely falling below 83°F or exceeding 89°F.

Daily low temperatures are around 78°F, rarely falling below 75°F or exceeding 81°F.

For reference, on September 4, the hottest day of the year, temperatures in Aruba typically range from 81°F to 91°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 December in Aruba

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 temperatures for the quarter of the year centered on December. 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 December in Aruba

Average Hourly Temperature in December in ArubaDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMNovJanwarmhothot
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.
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The month of December in Aruba experiences very rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 68% to 51%.

The clearest day of the month is December 31, with clear, mostly clear, or partly cloudy conditions 49% of the time.

For reference, on October 7, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 81%, while on January 18, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 53%.

Cloud Cover Categories in December in Aruba

Cloud Cover Categories in December in ArubaDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%NovJanDec 132%Dec 132%Dec 3149%Dec 3149%Dec 1137%Dec 1137%Dec 2143%Dec 2143%clearmostly clearpartly cloudymostly cloudyovercast
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 Aruba, the chance of a wet day over the course of December is rapidly decreasing, starting the month at 18% and ending it at 10%.

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 December in Aruba

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 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 December in Aruba is decreasing, starting the month at 1.6 inches, when it rarely exceeds 4.7 inches, and ending the month at 0.6 inches, when it rarely exceeds 1.8 inches.

Average Monthly Rainfall in December in Aruba

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 December in Aruba, the length of the day is essentially constant. The shortest day of the month is December 21, with 11 hours, 24 minutes of daylight and the longest day is December 1, with 11 hours, 27 minutes of daylight.

Hours of Daylight and Twilight in December in Aruba

Hours of Daylight and Twilight in December in ArubaDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrNovJanDec 2111 hr, 24 minDec 2111 hr, 24 minnightnightdaydayDec 111 hr, 27 minDec 111 hr, 27 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 month in Aruba is 6:45 AM on December 1 and the latest sunrise is 15 minutes later at 7:00 AM on December 31.

The earliest sunset is 6:12 PM on December 1 and the latest sunset is 13 minutes later at 6:25 PM on December 31.

Daylight saving time is not observed in Aruba 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, 24 minutes later, at 6:20 PM.

Sunrise & Sunset with Twilight in December in Aruba

The solar day over the course of December. 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 December in Aruba

Solar Elevation and Azimuth in December in ArubaDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMNovJan00101020202030304040505050000101020203030304040505060
northeastsouthwest
Solar elevation and azimuth over the course of December 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 December 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 December in Aruba

Moon Rise, Set & Phases in December in ArubaDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNovJanNov 18:48 AMNov 18:48 AMNov 155:29 PMNov 155:29 PMDec 12:22 AMDec 12:22 AMDec 155:02 AMDec 155:02 AMDec 306:28 PMDec 306:28 PMJan 136:28 PMJan 136:28 PMJan 298:37 AMJan 298:37 AM6:31 AM6:31 AM6:18 PM6:18 PM6:00 PM6:00 PM7:17 AM7:17 AM7:01 AM7:01 AM6:33 PM6:33 PM5:38 PM5:38 PM7:06 AM7:06 AM6:44 AM6:44 AM6:16 PM6:16 PM6:27 PM6:27 PM7:44 AM7:44 AM7:14 AM7:14 AM7:02 PM7:02 PM
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.
Dec 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
0%7:01 AMESE6:33 PMWSW-12:47 PMS245,398 mi
2
2%7:57 AMESE7:28 PMWSW-1:43 PMS243,317 mi
3
7%8:53 AMESE8:26 PMWSW-2:40 PMS241,184 mi
4
13%9:48 AMESE9:24 PMWSW-3:37 PMS239,038 mi
5
21%10:38 AMESE10:22 PMWSW-4:31 PMS236,898 mi
6
31%11:25 AMESE11:18 PMWSW-5:22 PMS234,782 mi
7
42%12:09 PMESE--6:11 PMS232,724 mi
8
50%-12:12 AMW12:50 PME6:58 PMS230,798 mi
9
65%-1:06 AMW1:31 PME7:45 PMS229,116 mi
10
76%-2:00 AMW2:13 PME8:33 PMS227,831 mi
11
86%-2:56 AMWNW2:58 PMENE9:24 PMN227,117 mi
12
93%-3:55 AMWNW3:46 PMENE10:19 PMN227,137 mi
13
98%-4:57 AMWNW4:40 PMENE11:19 PMN228,002 mi
14
99%-6:01 AMWNW5:38 PMENE--
15
100%-7:06 AMWNW6:40 PMENE12:22 AMN229,738 mi
16
99%-8:08 AMWNW7:43 PMENE1:25 AMN232,253 mi
17
96%-9:05 AMWNW8:43 PMENE2:25 AMN235,351 mi
18
90%-9:55 AMWNW9:39 PMENE3:21 AMN238,758 mi
19
82%-10:39 AMWNW10:31 PMENE4:11 AMN242,179 mi
20
74%-11:19 AMWNW11:19 PME4:57 AMN245,328 mi
21
65%-11:55 AMW-5:38 AMS247,965 mi
22
50%12:05 AME12:29 PMW-6:18 AMS249,908 mi
23
45%12:50 AME1:02 PMW-6:56 AMS251,042 mi
24
36%1:34 AME1:37 PMW-7:35 AMS251,324 mi
25
27%2:19 AMESE2:13 PMWSW-8:16 AMS250,777 mi
26
18%3:07 AMESE2:53 PMWSW-8:59 AMS249,490 mi
27
11%3:57 AMESE3:36 PMWSW-9:46 AMS247,602 mi
28
6%4:51 AMESE4:25 PMWSW-10:37 AMS245,291 mi
29
2%5:47 AMESE5:19 PMWSW-11:33 AMS242,756 mi
30
0%6:44 AMESE6:16 PMWSW-12:31 PMS240,196 mi
31
1%7:40 AMESE7:16 PMWSW-1:29 PMS237,788 mi

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 Aruba is essentially constant during December, remaining around 100% throughout.

For reference, on January 1, 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 December in Aruba

Humidity Comfort Levels in December in ArubaDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%NovJanDec 1100%Dec 1100%Dec 31100%Dec 31100%Dec 11100%Dec 11100%Dec 21100%Dec 21100%miserablemiserableoppressiveoppressivemuggymuggy
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 Aruba is increasing during December, increasing from 18.0 miles per hour to 19.5 miles per hour over the course of the month.

For reference, on June 18, 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.

Average Wind Speed in December in Aruba

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 Aruba throughout December is predominantly from the east, with a peak proportion of 99% on December 21.

Wind Direction in December in Aruba

Wind Direction in December in ArubaDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%NovJaneast
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).

Aruba 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 Aruba is gradually decreasing during December, falling by 2°F, from 82°F to 80°F, over the course of the month.

Average Water Temperature in December in Aruba

Average Water Temperature in December in ArubaDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313177°F77°F78°F78°F79°F79°F80°F80°F81°F81°F82°F82°F83°F83°F84°F84°F85°F85°FNovJanDec 182°FDec 182°FDec 3180°FDec 3180°FDec 1181°FDec 1181°FDec 2180°FDec 2180°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 Aruba 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 December in Aruba

Time Spent in Various Temperature Bands and the Growing Season in December in ArubaDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%NovJan100%Dec 16100%Dec 16warmhot
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 Aruba are very rapidly increasing during December, increasing by 936°F, from 10,850°F to 11,786°F, over the course of the month.

Growing Degree Days in December in Aruba

Growing Degree Days in December in ArubaDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313110,600°F10,600°F10,800°F10,800°F11,000°F11,000°F11,200°F11,200°F11,400°F11,400°F11,600°F11,600°F11,800°F11,800°F12,000°F12,000°FNovJanDec 110,850°FDec 110,850°FDec 3111,786°FDec 3111,786°FDec 1111,167°FDec 1111,167°FDec 2111,477°FDec 2111,477°F
The average growing degree days accumulated over the course of December, 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 Aruba is essentially constant during December, remaining within 0.2 kWh of 5.2 kWh throughout.

Average Daily Incident Shortwave Solar Energy in December in Aruba

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 Aruba are 12.500 deg latitude, -69.967 deg longitude, and 0 ft elevation.

The topography within 2 miles of Aruba is essentially flat, with a maximum elevation change of 0 feet and an average elevation above sea level of 0 feet. Within 10 miles is also essentially flat (0 feet). Within 50 miles is also essentially flat (0 feet).

The area within 2 miles of Aruba is covered by grassland (48%), artificial surfaces (18%), trees (16%), and shrubs (14%), within 10 miles by water (82%), and within 50 miles by water (91%).

This report illustrates the typical weather in Aruba, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used for this report can be found on the Queen Beatrix International Airport page.

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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