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Average Weather in December at Ninoy Aquino Manila International Airport Philippines

At Ninoy Aquino Manila International Airport, the month of December is characterized by essentially constant daily high temperatures, with daily highs around 86°F throughout the month, rarely exceeding 90°F or dropping below 82°F.

Daily low temperatures are around 75°F, rarely falling below 70°F or exceeding 78°F.

For reference, on April 27, the hottest day of the year, temperatures at Ninoy Aquino Manila International Airport typically range from 79°F to 93°F, while on January 21, the coldest day of the year, they range from 73°F to 86°F.

Average High and Low Temperature in December

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

Average Hourly Temperature in December at Ninoy Aquino Manila International Airport12 AM4 AM8 AM12 PM4 PM8 PM12 AM181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930303131NovJancomfortablewarmhot
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

The month of December at Ninoy Aquino Manila International Airport experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 67% to 56%.

The clearest day of the month is December 31, with clear, mostly clear, or partly cloudy conditions 44% of the time.

For reference, on June 7, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 94%, while on February 22, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 53%.

Cloud Cover in December

Cloud Cover in December at Ninoy Aquino Manila International Airport0%10%20%30%40%50%60%70%80%90%100%181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930303131NovJanDec 167%Dec 167%Dec 3156%Dec 3156%Dec 1162%Dec 1162%Dec 2159%Dec 2159%overcastmostly cloudypartly cloudymostly clearclear
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. At Ninoy Aquino Manila International Airport, the chance of a wet day over the course of December is very rapidly decreasing, starting the month at 49% and ending it at 31%.

For reference, the year's highest daily chance of a wet day is 68% on August 14, and its lowest chance is 13% on March 21.

Probability of Precipitation in December

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 Ninoy Aquino Manila International Airport is very rapidly decreasing, starting the month at 7.0 inches, when it rarely exceeds 13.9 inches or falls below 1.5 inches, and ending the month at 4.1 inches, when it rarely exceeds 8.5 inches or falls below 0.6 inches.

Average Monthly Rainfall in December

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

Over the course of December at Ninoy Aquino Manila International Airport, the length of the day is essentially constant. The shortest day of the month is December 22, with 11 hours, 16 minutes of daylight and the longest day is December 1, with 11 hours, 20 minutes of daylight.

Hours of Daylight and Twilight in December

Hours of Daylight and Twilight in December at Ninoy Aquino Manila International Airport0 hr4 hr8 hr12 hr16 hr20 hr24 hr181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930303131NovJanDec 2111 hr, 16 minDec 2111 hr, 16 minnightnightdaydayDec 111 hr, 20 minDec 111 hr, 20 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 Ninoy Aquino Manila International Airport is 6:04 AM on December 1 and the latest sunrise is 16 minutes later at 6:20 AM on December 31.

The earliest sunset is 5:24 PM on December 1 and the latest sunset is 13 minutes later at 5:37 PM on December 31.

Daylight saving time is not observed at Ninoy Aquino Manila International Airport during 2017.

For reference, on June 21, the longest day of the year, the Sun rises at 5:28 AM and sets 12 hours, 59 minutes later, at 6:27 PM, while on December 21, the shortest day of the year, it rises at 6:15 AM and sets 11 hours, 16 minutes later, at 5:32 PM.

Sunrise & Sunset with Twilight in December

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.

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.

The chance that a given day will be muggy at Ninoy Aquino Manila International Airport is gradually decreasing during December, falling from 98% to 94% over the course of the month.

For reference, on July 17, the muggiest day of the year, there are muggy conditions 100% of the time, while on January 22, the least muggy day of the year, there are muggy conditions 91% of the time.

Humidity Comfort Levels in December

Humidity Comfort Levels in December at Ninoy Aquino Manila International Airport0%10%20%30%40%50%60%70%80%90%100%181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930303131NovJanDec 198%Dec 198%Dec 3194%Dec 3194%Dec 1196%Dec 1196%Dec 2195%Dec 2195%miserablemiserableoppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortable
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 at Ninoy Aquino Manila International Airport is essentially constant during December, remaining within 0.2 miles per hour of 5.3 miles per hour throughout.

For reference, on December 18, the windiest day of the year, the daily average wind speed is 5.5 miles per hour, while on May 31, the calmest day of the year, the daily average wind speed is 3.2 miles per hour.

The highest daily average wind speed during December is 5.5 miles per hour on December 19.

Average Wind Speed in December

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 Ninoy Aquino Manila International Airport throughout December is predominantly from the east, with a peak proportion of 92% on December 28.

Wind Direction in December

Wind Direction in December at Ninoy Aquino Manila International Airport0%20%40%60%80%100%181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930303131NovJanwesteastnorth
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).

Water Temperature

Ninoy Aquino Manila 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 Ninoy Aquino Manila International Airport is essentially constant during December, remaining within 1°F of 81°F throughout.

Average Water Temperature in December

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

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 at Ninoy Aquino Manila International Airport is essentially constant during December, remaining within 0.2 kWh of 4.6 kWh throughout.

Average Daily Incident Shortwave Solar Energy in December

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 Ninoy Aquino Manila International Airport are 14.505 deg latitude, 121.004 deg longitude, and 30 ft elevation.

The topography within 2 miles of Ninoy Aquino Manila International Airport contains only modest variations in elevation, with a maximum elevation change of 164 feet and an average elevation above sea level of 32 feet. Within 10 miles contains only modest variations in elevation (531 feet). Within 50 miles contains significant variations in elevation (7,241 feet).

The area within 2 miles of Ninoy Aquino Manila International Airport is covered by artificial surfaces (88%), within 10 miles by water (45%) and artificial surfaces (44%), and within 50 miles by water (35%) and cropland (28%).

Data Sources

This report illustrates the typical weather at Ninoy Aquino Manila International Airport year round, 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

Ninoy Aquino Manila 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 Danilo Atienza Air Base, Subic Bay International Airport, Clark International Airport, and Calapan.

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.