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December Weather at Gibraltar International Airport Gibraltar

Daily high temperatures decrease by 2°F, from 63°F to 61°F, rarely falling below 57°F or exceeding 68°F.

Daily low temperatures decrease by 2°F, from 55°F to 53°F, rarely falling below 47°F or exceeding 61°F.

For reference, on August 4, the hottest day of the year, temperatures at Gibraltar International Airport typically range from 70°F to 82°F, while on January 21, the coldest day of the year, they range from 52°F to 61°F.

Average High and Low Temperature in December at Gibraltar International Airport

Average High and Low Temperature in December at Gibraltar International AirportDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313145°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°FNovJanDec 163°FDec 163°F55°F55°FDec 3161°FDec 3161°F53°F53°FDec 1162°FDec 1162°F54°F54°FDec 2162°FDec 2162°F54°F54°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 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 at Gibraltar International Airport

Average Hourly Temperature in December at Gibraltar International AirportDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMNovJanNowNowcoldcoolcomfortable
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.

Rio Grande, Rio Grande do Sul, Brazil (5,604 miles away) is the far-away foreign place with temperatures most similar to Gibraltar International Airport (view comparison).

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The month of December at Gibraltar International Airport experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 41% throughout the month.

The clearest day of the month is December 31, with clear, mostly clear, or partly cloudy conditions 60% of the time.

For reference, on October 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 46%, while on July 17, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 94%.

Cloud Cover Categories in December at Gibraltar International Airport

Cloud Cover Categories in December at Gibraltar International AirportDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%NovJanDec 160%Dec 160%Dec 3160%Dec 3160%Dec 1158%Dec 1158%Dec 2160%Dec 2160%NowNowclearmostly 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. At Gibraltar International Airport, the chance of a wet day over the course of December is essentially constant, remaining around 24% throughout.

For reference, the year's highest daily chance of a wet day is 26% on November 20, and its lowest chance is 0% on July 27.

Probability of Precipitation in December at Gibraltar International Airport

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 at Gibraltar International Airport is gradually decreasing, starting the month at 3.2 inches, when it rarely exceeds 7.9 inches or falls below 0.3 inches, and ending the month at 2.8 inches, when it rarely exceeds 7.5 inches or falls below 0.2 inches.

Average Monthly Rainfall in December at Gibraltar International Airport

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 at Gibraltar International Airport, the length of the day is essentially constant. The shortest day of the month is December 21, with 9 hours, 42 minutes of daylight and the longest day is December 1, with 9 hours, 53 minutes of daylight.

Hours of Daylight and Twilight in December at Gibraltar International Airport

Hours of Daylight and Twilight in December at Gibraltar International AirportDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrNovJanDec 219 hr, 42 minDec 219 hr, 42 minnightnightdaydayDec 19 hr, 53 minDec 19 hr, 53 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 at Gibraltar International Airport is 8:14 AM on December 1 and the latest sunrise is 18 minutes later at 8:32 AM on December 31.

The earliest sunset is 6:06 PM on December 5 and the latest sunset is 11 minutes later at 6:17 PM on December 31.

Daylight saving time is observed at Gibraltar International Airport during 2024, but it neither starts nor ends during December, so the entire month is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 7:04 AM and sets 14 hours, 37 minutes later, at 9:41 PM, while on December 21, the shortest day of the year, it rises at 8:28 AM and sets 9 hours, 42 minutes later, at 6:10 PM.

Sunrise & Sunset with Twilight in December at Gibraltar International Airport

Sunrise & Sunset with Twilight in December at Gibraltar International AirportDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031312 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMNovJan8:14 AM8:14 AMDec 16:06 PMDec 16:06 PM8:32 AM8:32 AMDec 316:17 PMDec 316:17 PM8:22 AM8:22 AMDec 116:07 PMDec 116:07 PM8:28 AM8:28 AMDec 216:10 PMDec 216:10 PMSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 at Gibraltar International Airport

Solar Elevation and Azimuth in December at Gibraltar International AirportDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMNovJan001010202020303000010102020303030NowNow
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 at Gibraltar International Airport

Moon Rise, Set & Phases in December at Gibraltar International AirportDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNovJanNov 11:48 PMNov 11:48 PMNov 1510:29 PMNov 1510:29 PMDec 17:22 AMDec 17:22 AMDec 1510:02 AMDec 1510:02 AMDec 3011:28 PMDec 3011:28 PMJan 1311:28 PMJan 1311:28 PMJan 291:37 PMJan 291:37 PM7:39 AM7:39 AM6:13 PM6:13 PM5:43 PM5:43 PM8:43 AM8:43 AM8:35 AM8:35 AM6:01 PM6:01 PM5:04 PM5:04 PM8:44 AM8:44 AM8:24 AM8:24 AM5:40 PM5:40 PM5:55 PM5:55 PM9:13 AM9:13 AM8:38 AM8:38 AM6:46 PM6:46 PMNowNow
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%8:35 AMESE6:01 PMSW-1:18 PMS245,762 mi
2
2%9:36 AMSE6:51 PMSW-2:14 PMS243,696 mi
3
6%10:33 AMSE7:50 PMSW-3:12 PMS241,568 mi
4
12%11:23 AMSE8:55 PMWSW-4:09 PMS239,422 mi
5
20%12:05 PMESE10:04 PMWSW-5:04 PMS237,279 mi
6
29%12:41 PMESE11:13 PMWSW-5:57 PMS235,156 mi
7
40%1:12 PMESE--6:46 PMS233,084 mi
8
50%-12:21 AMWSW1:40 PME7:33 PMS231,127 mi
9
63%-1:30 AMW2:07 PME8:20 PMS229,391 mi
10
74%-2:38 AMW2:34 PME9:08 PMS228,023 mi
11
84%-3:49 AMWNW3:03 PMENE9:58 PMS227,195 mi
12
92%-5:02 AMWNW3:36 PMENE10:52 PMS227,073 mi
13
97%-6:17 AMWNW4:16 PMENE11:51 PMS227,783 mi
14
99%-7:33 AMWNW5:04 PMNE--
15
100%-8:44 AMNW6:02 PMNE12:52 AMS229,365 mi
16
99%-9:47 AMNW7:07 PMNE1:55 AMS231,751 mi
17
96%-10:38 AMWNW8:16 PMENE2:56 AMS234,762 mi
18
91%-11:20 AMWNW9:23 PMENE3:52 AMS238,134 mi
19
84%-11:54 AMWNW10:28 PMENE4:42 AMS241,573 mi
20
75%-12:22 PMWNW11:30 PMENE5:28 AMS244,791 mi
21
66%-12:46 PMW-6:11 AMS247,535 mi
22
50%12:28 AME1:08 PMW-6:50 AMS249,614 mi
23
47%1:25 AME1:30 PMW-7:29 AMS250,900 mi
24
37%2:22 AME1:52 PMWSW-8:08 AMS251,335 mi
25
28%3:19 AMESE2:16 PMWSW-8:48 AMS250,934 mi
26
20%4:18 AMESE2:43 PMWSW-9:31 AMS249,772 mi
27
13%5:20 AMESE3:16 PMWSW-10:18 AMS247,980 mi
28
7%6:22 AMESE3:55 PMWSW-11:09 AMS245,730 mi
29
2%7:25 AMSE4:43 PMSW-12:04 PMS243,219 mi
30
0%8:24 AMSE5:40 PMSW-1:02 PMS240,649 mi
31
0%9:17 AMSE6:44 PMWSW-2:01 PMS238,201 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 at Gibraltar International Airport is essentially constant during December, remaining around 0% throughout.

For reference, on August 24, the muggiest day of the year, there are muggy conditions 56% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in December at Gibraltar International Airport

Humidity Comfort Levels in December at Gibraltar International AirportDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%NovJanDec 10%Dec 10%Dec 310%Dec 310%Dec 110%Dec 110%Dec 210%Dec 210%humidhumidcomfortablecomfortabledrydry
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 at Gibraltar International Airport is essentially constant during December, remaining within 0.3 miles per hour of 11.3 miles per hour throughout.

For reference, on February 24, the windiest day of the year, the daily average wind speed is 11.9 miles per hour, while on August 12, the calmest day of the year, the daily average wind speed is 9.0 miles per hour.

The highest daily average wind speed during December is 11.6 miles per hour on December 15.

Average Wind Speed in December at Gibraltar International Airport

Average Wind Speed in December at Gibraltar International AirportDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mph20 mph20 mphNovJanDec 1511.6 mphDec 1511.6 mphDec 111.0 mphDec 111.0 mphDec 3111.3 mphDec 3111.3 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 at Gibraltar International Airport throughout December is predominantly from the east, with a peak proportion of 43% on December 16.

Wind Direction in December at Gibraltar International Airport

Wind Direction in December at Gibraltar International AirportEWEDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%NovJanNowNowwesteastnorthsouth
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).

Gibraltar International Airport 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 at Gibraltar International Airport is essentially constant during December, remaining within 1°F of 62°F throughout.

Average Water Temperature in December at Gibraltar International Airport

Average Water Temperature in December at Gibraltar International AirportDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313158°F58°F60°F60°F62°F62°F64°F64°F66°F66°F68°F68°FNovJanDec 163°FDec 163°FDec 3161°FDec 3161°FDec 1162°FDec 1162°FDec 2162°FDec 2162°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 at Gibraltar International Airport 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 at Gibraltar International Airport

Time Spent in Various Temperature Bands and the Growing Season in December at Gibraltar International AirportDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%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 16NowNowcoldcoolcomfortable
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 at Gibraltar International Airport are increasing during December, increasing by 248°F, from 5,234°F to 5,483°F, over the course of the month.

Growing Degree Days in December at Gibraltar International Airport

Growing Degree Days in December at Gibraltar International AirportDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031315,000°F5,000°F5,100°F5,100°F5,200°F5,200°F5,300°F5,300°F5,400°F5,400°F5,500°F5,500°F5,600°F5,600°F5,700°F5,700°FNovJanDec 15,234°FDec 15,234°FDec 315,483°FDec 315,483°FDec 115,321°FDec 115,321°FDec 215,404°FDec 215,404°FNowNow
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 at Gibraltar International Airport is essentially constant during December, remaining within 0.1 kWh of 2.5 kWh throughout.

The lowest average daily incident shortwave solar energy during December is 2.4 kWh on December 16.

Average Daily Incident Shortwave Solar Energy in December at Gibraltar International Airport

Average Daily Incident Shortwave Solar Energy in December at Gibraltar International AirportDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 kWh0.0 kWh0.5 kWh0.5 kWh1.0 kWh1.0 kWh1.5 kWh1.5 kWh2.0 kWh2.0 kWh2.5 kWh2.5 kWh3.0 kWh3.0 kWh3.5 kWh3.5 kWh4.0 kWh4.0 kWh4.5 kWh4.5 kWhNovJanDec 162.4 kWhDec 162.4 kWhDec 12.6 kWhDec 12.6 kWhDec 312.5 kWhDec 312.5 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 Gibraltar International Airport are 36.151 deg latitude, -5.350 deg longitude, and 7 ft elevation.

The topography within 2 miles of Gibraltar International Airport contains very significant variations in elevation, with a maximum elevation change of 1,332 feet and an average elevation above sea level of 50 feet. Within 10 miles contains very significant variations in elevation (2,185 feet). Within 50 miles contains large variations in elevation (6,266 feet).

The area within 2 miles of Gibraltar International Airport is covered by water (62%) and artificial surfaces (27%), within 10 miles by water (63%) and shrubs (13%), and within 50 miles by water (51%) and cropland (17%).

This report illustrates the typical weather at Gibraltar International Airport, 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

Gibraltar International Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back are Sania Ramel Airport, Tangier Ibn Battouta Airport, Jerez Airport, Málaga Airport, Morón Air Base, Naval Station Rota, Seville San Pablo Airport, and Córdoba Airport.

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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